JP2001219167A - Water treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new water treatment equipment capable of easily and efficiently sterilizing water to be treated, which is stored in a water tank. SOLUTION: A gas-liquid separation tank 13 having a filter 12 to remove fine bubbles generated when a current is applied to a set of electrodes 11 consisting of electrode plates 110, as the like, to perform sterilization by an electrochemical reaction, is installed on a water treating path 10, which is connected to the water tank 2 and through which water W to be treated flows. A suction blower F1 for forcedly discharging gas originated from the removed fine bubbles to the outside of the tank 13 is connected to the tank 13. Thereby cleaned water free from cloudiness, which has been sterilized by a set of the electrodes 11 and from which the fine bubbles have been removed by the filter 12, can be returned to the water tank 2, for example, a swimming pool, and the gas originated from the fine bubbles can be discharged to the outside of the gas-liquid separation tank 13 by the suction blower F1 without causing water leakage, or the like, which ensures high safely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to various types of water tanks, from large water tanks such as pools and bathtubs to small water tanks such as water supply tanks arranged on the roof of buildings and general household bathtubs. The present invention relates to a novel water treatment apparatus capable of sterilizing treated water.

[0002]

2. Description of the Related Art For example, pools installed indoors and outdoors, or bathtubs at inns and public baths are regularly provided with so-called squid (leaf powder) to maintain the water quality. , High-grade salad powder) and an aqueous solution of sodium hypochlorite (NaClO) to be sterilized. However, in the past, this work was manually performed by employees of pools and baths, and since the aqueous solution of khaki and sodium hypochlorite was irritating, especially when put in during business hours, There has been a problem that it requires a great deal of labor to perform the processing, for example, the work must be performed with sufficient care.

[0003] In addition, since chalky is a solid powder, it takes a long time after dissolving to make the concentration uniform,
During that time, there was a problem that the pool and bathtub could not be used. In addition, in the case of a water tub placed on the roof of a building, or a bath tub for general households, the current situation only depends on the sterilizing power of chlorine ions contained in tap water, especially in the case of a water tub. One of the social problems is that the water quality deteriorates due to the propagation of algae inside.

[0004] In addition, in the case of a general home tub, it seems that there is usually no problem in terms of water quality because water is replaced approximately every one to two days. Since cleaning cannot be performed frequently, various bacteria and fungi easily propagate, and there is a concern that the water quality may deteriorate. An object of the present invention is to provide a novel water treatment apparatus that can easily and efficiently sterilize treated water stored in various water tanks as described above.

[0005]

Means for Solving the Problems and Effects of the Invention The invention according to claim 1 is connected to a water tank for storing water to be treated,
By introducing water to be treated from the water tank and energizing an electrode set composed of at least two electrode plates, sterilizing by an electrochemical reaction and then providing a water treatment path for returning to the water tank, Above, the water to be treated is passed, but the fine bubbles generated by the electrochemical reaction and mixed in the water to be treated are stored and enlarged without passing through, and are separated and removed from the water to be treated. A filter having a function, the inside of which has a gas-liquid separation tank partitioned into a plurality of gas-liquid separation areas by the filter, and the gas-liquid separation tank, at a position above the water surface, the filter And a suction type blower for forcibly discharging gas originating from fine bubbles separated from the water to be treated to the outside of the tank.

According to a second aspect of the present invention, at least two filters are arranged, and at least three filters are provided in the gas-liquid separation tank.
2. The method according to claim 1, wherein the liquid is divided into two gas-liquid separation areas.
It is a water treatment apparatus of description. According to a third aspect of the present invention, in the gas-liquid separation tank, an electrode set for an electrochemical reaction is disposed in the most upstream gas-liquid separation area defined by the filter, and the gas-liquid separation tank is connected to the electrolytic tank. The water treatment device according to claim 1, wherein the water treatment device is also used as a water treatment device.

According to a fourth aspect of the present invention, there is provided a gas-liquid separation tank,
Above the surface of the water to be treated, and above the upper side of the filter, by providing a gap for flowing gas in the tank, a gas flow passage extending over a plurality of gas-liquid separation regions is formed. The water treatment apparatus according to any one of claims 1 to 3. According to a fifth aspect of the present invention, there is provided a gas-liquid separation tank comprising: a gas inlet to a blower; and an air inlet for introducing air into the tank instead of gas discharged from the tank by the blower. 5. The water treatment apparatus according to claim 4, wherein the water treatment apparatus is arranged at a diagonal position on the gas flow passage on the upper surface of the water flow path.

[0008] According to a sixth aspect of the present invention, there is provided a gas-liquid separation tank,
Above the water surface of the water to be treated and above the upper side of the filter, by providing a gap for flowing gas in the tank, a gas flow passage extending over a plurality of gas-liquid separation regions is formed, and Wherein the gas suction port is disposed immediately above the gas-liquid separation region downstream of the gas-liquid separation region in which the electrode assembly is disposed, among the plurality of gas-liquid separation regions partitioned by the filter. A water treatment apparatus according to claim 3.

According to a seventh aspect of the present invention, there is provided a gas-liquid separation tank,
By detecting the level of the water to be treated and adjusting the inflow of the water to be treated into the tank, the level of the water to be treated in the area can be controlled within a certain range in the gas-liquid separation area on the most upstream side divided by the filter. 2. A water level control means for controlling the water level.
4. The water treatment apparatus according to any one of claims 1 to 3. The invention according to claim 8 is characterized in that a delivery pump for delivering treated water from which fine bubbles have been removed from the tank is disposed downstream of the gas-liquid separation tank in the water treatment path. Or 3
A water treatment apparatus according to any one of the above.

[0010] According to a ninth aspect of the present invention, an outlet for water to be treated is formed at the bottom of a gas-liquid separation region on the most downstream side defined by a filter in a gas-liquid separation tank. 9. The water treatment apparatus according to claim 8, wherein a delivery pump is disposed on a pipe forming the treatment system. The invention according to claim 10 is such that the outlet of the water to be treated at the tip thereof is located near the bottom of the above-mentioned region in the most downstream gas-liquid separation region defined by the filter in the gas-liquid separation tank. Wherein the tip of a pipe forming a water treatment path is inserted and arranged, a delivery pump is arranged on the pipe, and a pipe for priming is connected to the delivery pump. A water treatment apparatus according to claim 8.

The invention according to claim 11 is the water treatment apparatus according to any one of claims 1 to 3, wherein a tray for leaking treated water is disposed below the gas-liquid separation tank. is there. According to a twelfth aspect of the present invention, in the state where the electrode plate constituting the electrode set is held by a small lid that can be separated from the upper surface of the gas-liquid separation tank, the gas-liquid separation on the most upstream side of the gas-liquid separation tank is performed. The water treatment device according to claim 3, wherein the water treatment device is disposed in the region.

According to a thirteenth aspect of the present invention, in the water treatment apparatus according to the twelfth aspect, a seal is provided between the small lid for holding the electrode plate and the upper surface of the gas-liquid separation tank. It is. According to a fourteenth aspect of the present invention, a rib protruding upward from the upper surface of the upper surface of the gas-liquid separation tank is provided on the periphery of the small lid body holding the electrode plate so as to surround the base of each electrode plate. The water treatment apparatus according to claim 12, wherein

According to the structure of the first aspect, first, from the water tank,
If necessary, sodium chloride (NaCl), calcium chloride (CaC
l ₂ ), while adding hydrochloric acid (HCl) or the like, energize an electrode set composed of at least two electrode plates. Then, hypochlorous acid (HC generated by the following electrochemical reaction)
10), hypochlorite ion (ClO ⁻ ), chlorine gas (C
After the water to be treated is sterilized by a chlorine-containing compound such as l ₂ ) or active oxygen (O ₂ ⁻ ) generated for a very short time in the course of the reaction, it is returned to the water tank again through the water treatment path.

(Anode side) 4H ₂ O-4e ⁻ → 4H ⁺ + O ₂ ↑ + 2H ₂ O 2Cl ⁻ → Cl ₂ + 2e ^- H ₂ O + Cl ₂ {HClO + H ⁺ + Cl ⁻ (Cathode side) 4H ₂ O + 4e ⁻ → 2H ₂ } + 4OH - ^(anode + ^{cathode) H + + OH - → H} 2 O the above series of operations are manually e.g. operator, the water treatment path to actuate the pump for circulating the water, and only supplying current to the electrodes pairs The rest is carried out with little manual intervention and without the worker directly touching the water to be treated. If the operation of the pump and the energization of the electrode assembly are automated using a timer or a residual chlorine sensor to be described later, the water treatment can be completely automated.

Therefore, according to the configuration of the first aspect, the water to be treated stored in the water tank can be easily and efficiently sterilized. Furthermore, the water to be treated, which is returned to the water tank after the sterilization treatment, contains only a significantly lower concentration of ions than conventional treatment agents such as solid powder, calcium, or an aqueous solution of sodium hypochlorite. The above-mentioned treatment can be performed arbitrarily even during business hours such as a pool or a bath, or arbitrarily in accordance with the quality of the water to be treated which changes depending on the number of visitors, weather, temperature and the like.

[0016] Therefore, in a pool or a bathtub of a bath, the operation of disinfecting by adding chalky or the like can be omitted altogether or the number of times can be significantly reduced, thereby significantly reducing the burden on the operator. And good water quality can be maintained. In a water tank arranged on the roof of a building or the like, for example, every time a certain amount of water is used, or every certain period regardless of the amount of water used, the above-described series of operations is performed manually or automatically. In addition, the propagation of algae, which is a problem, can be suppressed, and the deterioration of water quality can be prevented.

Further, in a general household bathtub or the like,
For example, if the above series of operations is performed manually or automatically at the end of bathing for one day or prior to draining bath water, germs and mold in a boiler connected to a bath tub can be obtained. Breeding can be suppressed, and deterioration of water quality can be prevented. Moreover, in the structure of the first aspect, the hydrogen gas (H
Fine bubbles such as ₂ ) and oxygen gas (O ₂ ) can be separated and removed from the water to be treated by the filter.

That is, the filter has a function of allowing the water to be treated to pass therethrough, but storing fine bubbles mixed in the water to be treated without passing through the filter. The microbubbles stored in the liquid separation area were too small in diameter to be separated from water, but due to the storage, many of them were combined and increased in diameter, resulting in buoyancy and It rises from the water to the surface. Then, it moves to the gas phase side on the water surface and is separated and removed from the water to be treated.

Therefore, when the water to be treated after the sterilization treatment is returned to the water tank again, it is possible to prevent a phenomenon that the water in the water tank becomes cloudy due to the fine bubbles,
Water that is always clear and looks good can be supplied to the aquarium. In addition, the gas derived from fine bubbles separated and removed from the water to be treated is forcibly discharged out of the tank by a suction type blower connected to a position above the water surface of the gas-liquid separation tank, so that the gas is removed. Fire accumulates in the tank, etc.
It is also possible to avoid danger such as explosion.

In addition, since the blower is of the suction type as described above, there is no possibility that the internal pressure of the gas-liquid separation tank is increased to cause water leakage or the like. In addition, by arranging at least two filters as described in claim 2, when the inside of the gas-liquid separation tank is divided into at least three gas-liquid separation areas, the first filter is trapped. Even if the fine bubbles pass through without being combined with other fine bubbles, they can be captured by the second and subsequent filters without being returned to the water tank, and separated and removed from the water to be treated. Since the possibility increases, separation of fine bubbles in the gas-liquid separation tank,
Removal can be performed more reliably.

According to the third aspect of the present invention, the electrode set for the electrochemical reaction is arranged in the gas-liquid separation region on the most upstream side of the gas-liquid separation tank partitioned by the filter. By using the liquid separation tank also as an electrolytic tank for an electrochemical reaction, it is possible to reduce the space and cost of the apparatus. According to the configuration of the fourth aspect, the gas flow across the plurality of gas-liquid separation regions formed by providing a gap in the gas-liquid separation tank above the surface of the water to be treated and above the upper side of the filter. The gas generated in each of the gas-liquid separation areas can be combined into one gas and discharged out of the tank with a single blower. However, an increase in power consumption can be suppressed.

At this time, as described in claim 5,
A gas inlet to the blower and an air inlet for introducing air into the tank in place of the gas discharged to the outside of the tank by the blower are provided on the gas flow passage on the upper surface of the gas-liquid separation tank. The most distant diagonal position allows the gas to be more efficiently discharged out of the tank by carrying the air flow from the air inlet to the suction port generated by the operation of the blower. The increase in power consumption during device operation
It can be further reduced.

The air inlet and the gas inlet to the blower are both located on the upper surface of the gas-liquid separation tank, as described above, so that when the water to be treated overflows. Can be more reliably prevented from leaking from these ports. The water level of each partitioned gas-liquid separation region in the gas-liquid separation tank tends to be higher on the upstream side and lower on the downstream side due to the influence of the resistance of the filter on the water flow.

When the gas-liquid separation tank is also used as an electrolytic tank as described in claim 3, the electrode assembly is used to increase the sterilization efficiency by using as large an area of the electrode plate as possible for the electrochemical reaction. It is preferable to maintain the water level of the gas-liquid separation region on the most upstream side where is disposed as high as possible, but in this case, the surface of the gas-liquid separation region on the most upstream side is extremely There is a possibility that the gas cannot be efficiently discharged out of the tank because the gas is filled with a large amount of fine bubbles.

Therefore, the blower has a water level lower than that of the gas-liquid separation region on the most upstream side, and thus has a sufficient space above the water surface, just above the gas-liquid separation region on the downstream side. Arrangement at a position is preferable in terms of efficient gas discharge. Note that, as described above, the gas-liquid separation region on the most upstream side has the highest water level, so that the water level rises rapidly due to fluctuations in the amount of water supplied to the gas-liquid separation tank, as described above. Water leakage from the air inlet or the like may occur.

Therefore, in order to more reliably prevent water leakage, as described in claim 7, the gas-liquid separation tank has
By detecting the level of the water to be treated and adjusting the inflow of the water to be treated into the tank, the level of the water to be treated in the area can be controlled within a certain range in the gas-liquid separation area on the most upstream side divided by the filter. It is preferable to provide a water level control means for controlling the water level. Further, as described in claim 8, when a delivery pump for delivering the water to be treated after removing the microbubbles from the tank is disposed downstream of the gas-liquid separation tank in the water treatment path, Since the rise of the water pressure in the gas-liquid separation tank can be suppressed by the function of the pump, it is possible to more reliably prevent water leakage from the pipe connection part and the like.

The pipe to the delivery pump which constitutes the water treatment path is formed at the bottom of the most downstream gas-liquid separation area defined by the filter in the gas-liquid separation tank as described in claim 9. An outlet of the treated water may be connected.
As described in the above, the tip may be inserted and arranged in the most downstream gas-liquid separation region so that the outlet of the water to be treated at the tip is located near the bottom of the region. In the latter case, if the delivery pump is stopped, the water to be treated at the tip of the pipe will flow out of the delivery port and the pipe will be emptied, preventing the delivery pump from running idle and being damaged when it is restarted. To this end, it is preferable to connect a pipe for priming to the delivery pump.

In the case where the pressure toward the pump is applied to the priming water in the piping and the priming water is automatically supplied to the pump at the start of operation by using this pressure, if a normal pump is used as the delivery pump, Good. On the other hand, when the pressure toward the pump is not applied to the priming water in the pipe and the priming water is not automatically supplied to the pump at the start of operation, a self-priming pump is used as a delivery pump, and Priming water may be supplied to the pump by the suction force generated from the pump.

Further, according to the structure of the eleventh aspect, in spite of taking various measures for preventing water leakage as described in each of the above-mentioned claims, even if water leakage occurs in the gas-liquid separation tank,
Since the leaked water to be treated can be received by the plate, the danger of short-circuiting, electric leakage, and the like due to the water to be treated can be minimized. According to the configuration of claim 12, the electrode set can be removed without removing the entire upper surface of the gas-liquid separation tank.
Just by removing the detachable small lid from the upper surface, it can be taken out of the gas-liquid separation tank, so that the scale attached to the surface of the electrode plate constituting the electrode set is removed, or the life is extended. It is possible to save labor and labor when performing maintenance, such as when replacing an electrode set, and the maintenance is facilitated.

Also, when replacing the electrode set whose service life has expired as described above, it is only necessary to replace the small lid body to which the electrode set is fixed, and the cost of replacing parts can be reduced. In the above configuration, as described in claim 13, the space between the small lid and the upper surface of the gas-liquid separation tank is sealed with a sealing material, thereby reliably preventing water leakage from this portion. be able to. Further, as described in claim 14, when a rib protruding above the upper surface of the upper surface of the gas-liquid separation tank is provided on the periphery of the small lid so as to surround the base of the electrode assembly, the gas-liquid separation is performed. When the water to be treated overflows from other parts of the tank, for example, the air inlet or the like, the water to be treated is prevented from entering the base of the electrode set, and the space between the electrode plates constituting the electrode set is prevented. Short circuit can be reliably prevented.

[0031]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a simplified view showing a structure in which a water treatment apparatus 1 according to an embodiment of the present invention is incorporated in a large water tank 2 such as a pool or a bath tub. As shown in the figure, a circulating pump 2 incorporating a filter 21 for sand filtration is installed in the water tank 2.
2, a main circulation path 20 for constantly circulating a large amount of the water to be treated W in the direction indicated by the double solid line arrow in the figure is installed, and the water treatment path 10 of the water treatment apparatus 1 is As shown by arrows, the main circulation path 20 branches off from a branch point J1 downstream of the filter 21 to form an electrode set 11 composed of a plurality of electrode plates 110. After passing through a gas-liquid separation tank 13 also serving as an electrolytic tank, which incorporates the filters 12 and 12, the branch point J1
At a junction J2 on the further downstream side, it is connected so as to join the main circulation path 20 again.

On the way of the water treatment path 10 from the branch point J1 to the gas-liquid separation tank 13, the on-off valve B1, the regulating valve B2 for adjusting the flow rate, the flow meter S1, the solenoid valve B3, and A filter 14 for filtering water to remove organic substances and the like is provided. In addition, the position between the flow meter S1 and the solenoid valve B3 is branched at a branch point J3 as shown by a dashed arrow in the drawing, and a pressure reducing valve B4 for reducing the pressure and a valve for adjusting the flow rate are provided. Is connected to a residual chlorine sensor S2 for measuring the residual chlorine concentration in the water to be treated via the regulating valve B5 of the above, one of which is further connected to the gas-liquid separation tank 13 via the three-way valve B6, and the other is Branch paths 10a and 10b leading to a drain port (not shown) for waste water are connected.

The residual chlorine sensor S2 is arranged as described above because, due to its structure, a very small amount of water to be treated, which is smaller than the amount of water flowing through the water treatment path 10, must be constantly flowing. That is, during operation of the water treatment device 1,
When the water continues to flow through the branch path 10a and the water treatment device 1 is stopped, the electromagnetic valve B3 is closed and the three-way valve B6 is closed to prevent water from overflowing from the gas-liquid separation tank 13.
Is switched to continue flowing water to the drain port through the branch path 10b, so that the residual chlorine sensor S2 is maintained in a normal state.

A pressure gauge S3 for measuring the pressure of the water to be treated is connected between the solenoid valve B3 and the filter 14. The pressure gauge S3 and the flow meter S1 mainly stop or decrease the supply of the water to be treated from the main circulation path 20 to the water treatment path 10 for some reason,
When the water level in the gas-liquid separation tank 13 drops below a predetermined amount,
It is provided to prevent damage to these members by stopping the operation by stopping the power supply to the electrode set 11 and a delivery pump P1 described later.

On the way of the water treatment path 10 from the gas-liquid separation tank 13 to the junction J2, the water to be treated is sent out from the gas-liquid separation tank 13 in order, so that the water W to be treated is
A pump P1 for circulation in the inside, a flow meter S4, a check valve B7 for preventing backflow, regulating valves B8 and B9 for adjusting flow rate, and an on-off valve B10 are arranged. A pressure gauge S5 for measuring the pressure of the water to be treated is connected between the gauge S4 and the check valve B7.

The pressure gauge S5 and the flow meter S4 mainly stop or reduce the reflux of the water to be treated from the water treatment path 10 to the main circulation path 20 for some reason.
When the water level in the gas-liquid separation tank 13 rises above a predetermined amount,
The opening / closing valves B1 and B10 are closed to shut off the water treatment path 10 from the main circulation path 20 so as to prevent water from overflowing from the air inlet 13O of the gas-liquid separation tank 13. Further, between the pressure gauge S5 and the check valve B7 in the water treatment path 10, an aqueous solution L of sodium hypochlorite is supplied from the chemical solution tank 15 to the metering pump as indicated by a two-dot chain line arrow in the figure. A branch path 10c for supplying the water treatment path 10 at a junction J4 is connected via P2.

As described above, when the aqueous solution L of sodium hypochlorite supplied from the chemical solution tank 15 is used together with the electrochemical reaction by the electrode set 11 for sterilization of the water to be treated,
The electrode plates 110 constituting the electrode set 11 can be prevented from being rapidly consumed and deteriorated, and the residual chlorine concentration in the water to be treated is rapidly reduced, for example, at the start of a pool operation, so that the water to be treated is sterilized. It is possible to respond with sufficient margin even when it is necessary to perform the operation quickly and in large quantities.

The gas-liquid separation tank 13 is, as shown in FIG.
A box-shaped tank body 130 serving as the main body, and the tank body 13
And a large lid 131 which forms the upper surface of the gas-liquid separation tank 13 by closing the upper opening of the tank main body 1.
The inside of 30 is divided into three gas-liquid separation regions 130a to 130a by the two filters 12 and 12 for removing fine bubbles described above.
130c. Among the three gas-liquid separation regions 130a to 130c, the electrode set 11 including the above-described plurality of electrode plates 110 is disposed in the gas-liquid separation region 130a on the most upstream side. Is also used as an electrolytic cell for an electrochemical reaction.

At the bottom of the gas-liquid separation area 130c on the most downstream side, an outlet 130d for water to be treated is formed.
From the outlet 130d, on the pipe 101 forming the latter half of the water treatment path 10, the delivery pump P1
Is arranged. On the other hand, in the gas-liquid separation tank 13, above the surface of the water W to be treated in each of the gas-liquid separation regions 130a to 130c, and above the upper sides of the filters 12, 12, between the large lid 131. A gap is formed in the gas-liquid separation tank 13, as shown by a dashed-dotted arrow in FIG.
A gas flow passage 13a extending to 0c is formed.

In the large lid 131, the water level becomes lowest as shown in the figure due to the effect of the resistance of the filters 12 and 12 on the water flow, and as a result, there is a sufficient space above the water surface, and At a position immediately above the gas-liquid separation region 130c, a suction-type blower F1 for forcibly discharging the gas originating from fine bubbles separated from the water W to be treated by the filters 12, 12 to the outside of the tank is provided in the middle. Is connected to the exhaust pipe F2, which is located immediately above the gas-liquid separation region 130a on the most upstream side by the blower F1.
An air inlet 131a for introducing air into the tank as shown by a white arrow in the figure instead of the gas discharged to the outside of the tank as shown by a black arrow in the figure is formed. A pipe 100 forming the first half of the path 10 is connected.

The gas inlet port 131b of the exhaust pipe F into the blower F1 and the air inlet port 131a of the exhaust pipe F are, as shown in FIG. When the blower F1 is operated, when the blower F1 is operated, the gas separated from the water to be treated W by the filters 12, 12 and originating from the fine bubbles is generated by the air inlet 131a.
The gas is efficiently discharged out of the tank by being put on the flow of the air flowing through the gas flow passage 13a from the air to the suction port 131b.

The gas-liquid separation region 130 of the large lid 131
a small lid which holds a plurality of electrode plates 110 constituting the electrode set 11 in order to dispose the electrode set 11 in the gas-liquid separation region 130a on the most upstream side as described above. The body 132 is arranged so as to be separable from the large lid 131, and a float switch SW as a water level control means for controlling the water level in the gas-liquid separation region 130a to a certain range is provided by a water level detection unit SW1. Is arranged to be inserted into the gas-liquid separation region 130a.

The small lid 132 is provided with a plurality of electrode plates 110.
And a flat bottom plate 132a for holding the bottom plate 132a.
A rib 132b protruding from the periphery of the electrode plate 110 so as to surround the base of each electrode plate 110, and a rib 132b protruding above the upper surface of the large lid 131, and a flange protruding outward from a side surface of the rib 132b. 132c, and the illustrated large lid 13
In the state of being attached to 1, the seal member 133 interposed between the lower surface of the flange 132c and the upper surface of the large lid 131 prevents water leakage between the two lids 131 and 132. Sealed.

The float switch SW is provided with a water level detector SW.
In the gas-liquid separation region 130a on the most upstream side, which is detected in 1,
By detecting the water level of the water to be treated W and opening and closing the on-off valve B1 and adjusting the flow rate by the regulating valve B2, the inflow of the water to be treated into the tank 13 is adjusted.
The water level of the water W to be treated 0a is controlled within a certain range. Further, a pipe 1 that forms the above-described branch path 10a is provided at a position directly above the gas-liquid separation area 130b of the large lid 131.
02 is connected.

Under the gas-liquid separation tank 13 is disposed a tray 16 for leaking water to be treated. Even if a leak occurs in the gas-liquid separation tank 13, the leaked water to be treated is removed. This can minimize the risk of short-circuiting, short-circuiting, etc. Reference numeral 10d in the figure denotes a drainage path for sending leaked water to be received in the tray 16 to a drain port (not shown), and reference numeral B11 denotes a flow rate for adjusting the flow rate of the water to be processed passing through the drainage path 10d. It is a regulating valve.

As the electrode plate 110 constituting the electrode set 11, for example, gold (Au), platinum (Pt), palladium (Pd), and platinum (Pt) are formed on the entire surface of a titanium (Ti) substrate.
For example, a thin film of a noble metal such as iridium (Pt-Ir) coated by a plating method or a baking treatment is used. As the filter 12 for removing fine bubbles and the filter 14 for removing organic substances, a nonwoven fabric made of natural or chemical fibers is used.

In particular, a filter 1 for removing fine bubbles
As for 2, since the filter 12 is disposed immediately after the electrochemical reaction by the electrode set 11, the filter 12 has sufficient resistance to chlorine-containing compounds and active oxygen generated by the electrochemical reaction, such as polypropylene fibers. A nonwoven fabric having a fine mesh is preferably used because it is formed of fibers and does not easily transmit fine bubbles. The size of the through hole is not particularly limited, but the average diameter of the through hole is 1 to 100.
It is preferably about μm, and more preferably about 10 to 50 μm. If the average diameter of the through-holes is less than this range, the resistance of the filter 12 to the water flow becomes too large, and the efficiency of sterilizing the water to be treated may decrease, and conversely, when the average diameter exceeds this range. Because the effect of storing fine bubbles without permeating them becomes insufficient,
There is a possibility that the efficiency of removing fine bubbles may be reduced.

On the other hand, a filter 14 for removing organic substances and the like
Considering its durability, a nonwoven fabric formed of fibers such as polypropylene fibers is preferably used. However, as the filter 14, in order not to decrease the flow rate of the water to be treated passing through the water treatment path 10,
It is preferable to use a nonwoven fabric in which the average diameter of the through holes is larger than that of the filter 12, that is, the nonwoven fabric has an average diameter exceeding 100 μm. In order to sterilize the water W to be treated in the water tank 2 using the water treatment apparatus 1 provided with the above-described components, the circulation pump 23 is first operated as usual, and the main circulation path 20 is operated.
While circulating a large amount of water W to be treated as shown by the double solid line arrow in FIG. 1, the delivery pump P1 is operated and the on-off valves B1, B10 are opened.

Then, a part of the water to be treated circulating in the main circulation path 20 is mainly changed by the pressure difference between the internal pressure of the main circulation path 20 and the gas-liquid separation tank 13 under atmospheric pressure. After flowing into the processing path 10, the flow rate is first adjusted through the regulating valve B2, then the flow rate is measured by the flow meter S1, the residual chlorine concentration by the residual chlorine sensor S2, and the water pressure by the pressure gauge S3. After that, it is sent to the filter 14 to remove organic substances and the like. The adjustment of the flow rate by the adjustment valve B2 is adjusted according to the measured flow rate of the flow meter S1.

Next, the water to be treated is sent to the gas-liquid separation area 130a on the most upstream side of the gas-liquid separation tank 13, and
0a, the electrode set 11 is energized based on the measurement result of the residual chlorine concentration measured by the residual chlorine sensor S2 and the like, so that it is sterilized by an electrochemical reaction and then passes through the two filters 12 and 12. Then, while being sequentially sent to the downstream gas-liquid separation areas 130b and 130c, the fine bubbles are removed by the above-described mechanism, and the appearance becomes clear and clear.

At this time, the gas removed from the water to be treated and originating from the microbubbles is generated by operating the blower F1 through the air inlet 131a and the suction port 131b.
Is removed from inside the gas-liquid separation tank 13 by the flow of air flowing through the gas flow passage 13a to the outside, through the exhaust pipe F2, as shown by the black arrow in the figure, outside the room and the exhaust port (not shown) Is discharged to On the other hand, the water to be treated, from which the sterilization process has been completed and from which the fine bubbles have been removed, is operated by the delivery pump P1.
From the gas-liquid separation area 130c at the most downstream side, the gas is sent out of the tank through a delivery port 130d provided at the bottom thereof, and the flowmeter S
4. Check valve B7, regulating valves B8, B9, and on-off valve B1
The water is returned to the main circulation path 20 at the junction J2 through the zero, and is returned to the water tank 2.

The water treatment apparatus 1 having the above-mentioned components is not shown in the figure, but, for example, the above components, a power supply device for driving the components, a control device (sequencer) and the like are appropriately sized. The unit is placed inside the cabinet, and the parts that require regular or irregular maintenance, such as pumps, filters, and pressure gauges, are placed outside the cabinet. And is installed in equipment such as a pool.

FIG. 4 shows a modification of the portion of the gas-liquid separation tank 13. In this modification, the pipe 103 to the delivery pump P 1 constituting the water treatment path 10 is connected to the water to be treated at the tip thereof. Of the gas-liquid separation region 13 on the most downstream side
The distal end of the pipe 103 is inserted and arranged from above the gas-liquid separation tank 13 through the large lid 131 so as to be located near the bottom of Oc. In addition, in this example, as described above, the pipe 104 configuring the branch path 10e for supplying priming water to the delivery pump P1 is configured as the pipe 100 configuring the upstream side of the water treatment path 10 and the downstream side. It is arranged so as to connect with the pipe 103.

That is, the on-off valve B12
And an on-off valve B13 is provided on the pipe 103 at a position upstream of the delivery pump P1.
The pipe 104 is branched from the branch point J5 on the upstream side of the pipe 2, and is opened and closed via an on-off valve B14 provided on the way.
Pipe 10 at the junction J6 between the pump 13 and the delivery pump P1.
3 A manual valve or a solenoid valve is used as each of the on-off valves B12 to B14.

When the operation of the delivery pump P1 is started in the above configuration, the on-off valves B12 and B13 are first closed and the on-off valve B14 is opened. Then, in the case of this example, since the pressure of the main circulation path 20 is applied to the upstream side of the water treatment path 10 as described above, the water to be treated as the priming water is caused by this pressure, and the two-dot chain line arrow in FIG. Is automatically supplied through the pipe 104, and the pump P1 can be started without being damaged.

Therefore, in this example, the delivery pump P1
If a pressure is not applied to the upstream side of the water treatment path 10 and the water to be treated is not automatically supplied through the pipe 104 even when the on-off valve B14 is opened, the above-described pump is used. As described above, a self-sufficient pump may be used as the delivery pump P1, and the water to be treated as priming water may be self-supplied to the pump through the pipe 104 by the suction force during the operation.

Next, when the delivery pump P1 is started in this state, the delivery pump P1 is operated stably while the water to be treated is continuously supplied through the pipe 104.
The on-off valve B12 is opened to supply the water to be treated to the gas-liquid separation tank 13. Then, the water to be treated is supplied to the filters 12, 12
When the on-off valve B13 is opened at the time when the delivery port 103a at the end of the pipe 103 is immersed in the water to be treated, the gas flows into the gas-liquid separation area 1c.
The water to be treated from 30c fills the inside of the pipe 103 by the suction force of the delivery pump P1 and becomes in a state where normal operation is possible. Therefore, the on-off valve B14 is closed and the state can be shifted to the normal operation state. .

In FIG. 3, the parts other than those described above are configured in the same manner as in FIG.
The same members are denoted by the same reference numerals, and description thereof is omitted. Although not shown in FIG. 3, the electrode set 11 composed of a plurality of electrode plates 110 is a small lid that can be separated from the large lid 131 that constitutes the gas-liquid separation tank 13 as in the example of FIG. Preferably, it is held on top. The present invention is not limited to the embodiments described above, and various changes can be made within the scope of the claims.

[Brief description of the drawings]

FIG. 1 shows a water treatment apparatus according to an embodiment of the present invention.
It is a figure which shows the structure incorporated in the large-sized water tanks, such as a pool and the bathtub of a bathhouse, in simplified form.

FIG. 2 is a schematic sectional view of a gas-liquid separation tank, which is a main part of the water treatment apparatus.

FIG. 3 is a schematic plan view illustrating an arrangement of a gas suction port into a blower and an air introduction port in the gas-liquid separation tank.

FIG. 4 is a simplified diagram showing a modification of the gas-liquid separation tank.

[Explanation of symbols]

 F1 Blower 1 Water treatment device 10 Water treatment path 11 Electrode set 110 Electrode plate 12 Filter 13 Gas-liquid separation tank 130a, 130b, 130c Gas-liquid separation area 2 Water tank W Water to be treated

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 531 C02F 1/50 531M 540 540B 550 550D 550L 550H 560 560F 560Z (72) Inventor Fujikawa Kiyokazu Osaka 2-5-5 Keihanhondori, Moriguchi-shi, Sanyo Electric Co., Ltd. (72) Inventor Kazura Kawamura 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Minoru Nakanishi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Minoru Kishi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. Reference) 4D037 AA08 AA09 AB11 AB18 BA23 BB01 BB02 CA02 CA04 4D061 DA02 DA05 DA07 DB01 DB02 EA02 EB01 EB04 EB19 EB20 EB30 EB31 EB37 EB38 EB39 ED12 ED13 FA03 FA13 GA02 GA06 GA19 GB01 GB02 GB18 GB19 GC04

Claims (14)

[Claims] 1. After being connected to a water tank for storing the water to be treated, introducing the water to be treated from the water tank, and energizing an electrode set composed of at least two electrode plates, sterilizing by an electrochemical reaction. In addition to providing a water treatment path for reflux in the water tank, the water to be treated is passed through the water treatment path, but fine bubbles generated by the electrochemical reaction and mixed in the water to be treated are stored without passing through. By increasing the diameter, the filter has a function of separating and removing from the water to be treated, the inside of which is provided with a gas-liquid separation tank partitioned into a plurality of gas-liquid separation regions by the filter, and At the position above the water surface of this gas-liquid separation tank, for forcibly discharging gas originating from fine bubbles separated from the water to be treated by the filter to the outside of the tank,
A water treatment apparatus to which a suction type blower is connected. 2. At least two filters are arranged.
The water treatment apparatus according to claim 1, wherein the inside of the gas-liquid separation tank is divided into at least three gas-liquid separation areas. 3. An electrode set for an electrochemical reaction is disposed in a gas-liquid separation region on a most upstream side of a gas-liquid separation tank defined by a filter, and the gas-liquid separation tank also serves as an electrolytic cell. The water treatment apparatus according to claim 1 or 2, wherein: 4. A plurality of gas-liquid separation areas are provided by providing gaps in the gas-liquid separation tank above the surface of the water to be treated and above the upper side of the filter for gas flow in the tank. The water treatment apparatus according to any one of claims 1 to 3, wherein a gas flow path extending over the water treatment apparatus is formed. 5. An upper surface portion of a gas-liquid separation tank, comprising: a gas inlet to a blower; and an air inlet for introducing air into the tank instead of gas discharged from the tank by the blower. 5. The water treatment apparatus according to claim 4, wherein the water treatment apparatus is disposed at a diagonal position on the gas flow passage. 6. A plurality of gas-liquid separation regions are provided in the gas-liquid separation tank above the surface of the water to be treated and above the upper side of the filter by providing gaps for gas flow in the tank. And a suction port for the gas into the blower, the gas-liquid separation downstream of the gas-liquid separation region in which the electrode assembly is disposed, among the plurality of gas-liquid separation regions partitioned by the filter. 4. The water treatment apparatus according to claim 3, wherein the water treatment apparatus is disposed immediately above the region. 7. A process for detecting the level of water to be treated in the gas-liquid separation region on the most upstream side defined by a filter in the gas-liquid separation tank and adjusting the flow rate of the water to be treated into the tank. The water treatment apparatus according to any one of claims 1 to 3, further comprising a water level control means for controlling the level of the water to be treated in the area within a predetermined range. 8. The water treatment path, downstream of the gas-liquid separation tank,
The water treatment apparatus according to any one of claims 1 to 3, further comprising a delivery pump for delivering the water to be treated after removing the fine bubbles from the tank. 9. A discharge port for water to be treated is formed at the bottom of a gas-liquid separation region on the most downstream side defined by a filter in a gas-liquid separation tank, and a water treatment system is formed from the discharge port. 9. A delivery pump is arranged on the pipe.
A water treatment apparatus as described in the above. 10. A water treatment system in a gas-liquid separation tank on the most downstream side defined by a filter in a gas-liquid separation tank such that the outlet of the water to be treated at the tip is located near the bottom of the above-mentioned area. 9. The pipe according to claim 8, wherein a tip of a pipe forming a path is inserted and arranged, a delivery pump is arranged on the pipe, and a pipe for priming is connected to the delivery pump. Water treatment equipment. 11. The water treatment apparatus according to claim 1, wherein a tray for leaking water to be treated is disposed below the gas-liquid separation tank. 12. An electrode plate constituting an electrode set is held in a gas-liquid separation region on the most upstream side of a gas-liquid separation tank while being held by a small lid separable from an upper surface of the gas-liquid separation tank. The water treatment device according to claim 3, wherein the water treatment device is arranged. 13. The water treatment apparatus according to claim 12, wherein a space between the small lid for holding the electrode plate and the upper surface of the gas-liquid separation tank is sealed with a sealing material. 14. A rib projecting upward from the upper surface of the gas-liquid separation tank so as to surround the base of each electrode plate at the periphery of the small lid body holding the electrode plate. 13. The water treatment apparatus according to claim 12, wherein