JP2003340489A - Water cleaning apparatus in closed water area - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cleaning apparatus capable of preventing the bottom surface and the deep water in a closed water area from becoming in an anaerobic state and bringing out natural cleaning action to the utmost with a simple structure. <P>SOLUTION: This water cleaning apparatus in the closed water area for carrying out waving action by mixing bubbled air with pumped water pumped up by an underwater aeration pump, jetting and falling down the mixture is provided with a frame body, a water introducing space provided dividedly at the center part of the frame body, a mesh like contact material arranged on the whole surface of the frame body, a contact filler filled in the inside of the mesh like contact material and for adsorbing and removing sludge in the pumped water and biologically treating the sludge, and a water introducing pipe attached detachably to the lower part of the water introducing space, and further a support frame is provided on the top of the frame body and one or a plurality of floats and the underwater aeration pump are attached integrally to the support frame. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification device for a closed water area, and more particularly to a water-stop system or semi-water-stop system lake (closed water area: for example, aquaculture pond, agricultural reservoir, or regulating pond). ) Is used to improve the water environment by utilizing the self-cleaning function (natural purification function) of (1).

[0002]

2. Description of the Related Art Recently, artificial lakes for aquaculture ponds and agricultural ponds,
In closed water areas (lakes) such as various regulating ponds, the eutrophication phenomenon of water quality is advancing along with the inflow of nutrient salts contained in domestic wastewater.

On the other hand, the garden surface of these lakes tends to be anaerobic, and when the water temperature rises in summer, a large amount of phytoplankton is generated from the bottom surface by elution of nutrient salts such as nitrogen and phosphorus. Due to this, a vicious cycle in which eutrophication is further accelerated is repeated, and algae such as freshwater red tides and water-blooms are abnormally generated, and filtration obstacles and water quality deterioration (such as offensive taste) in water supply facilities, fish There are serious social problems, such as the induction of death, and the deterioration of the landscape of the surrounding environment.

The main cause of such deterioration of the water environment is that oxygen in the water is consumed by the respiratory action of microorganisms in the sediment and the surface of the sediment and deep water are brought to an anaerobic state. .

As a method for preventing the lake water from becoming anaerobic, for example, oxygen in the atmosphere is sucked into the pumping water by the action of the returning special impeller, and the mixed water bubbled is re-pressurized. A submersible aeration pump that mixes with a jet and jets and drops into the sky in a morning glory type to perform a wave action has been developed and is commercially available.

On the other hand, as a method for improving the bottom sediment environment, there are civil engineering methods such as dredging, cultivating and covering soil, lime,
Known methods include a chemical injection method such as fly ash, sodium aluminate, and zirconium, as well as a method using both a civil engineering method and a chemical injection method.

[0007]

However, the method using the above-mentioned submerged aeration pump has a problem that the bottom surface and deep water cannot be prevented from becoming anaerobic.

[0008] For example, in a civil engineering method for removing sludge by dredging, secondary pollution by rolling up sludge, influence of hydrogen sulfide produced by sulfate-reducing bacteria on fish, dehydration of dredged sludge, and sludge during storage It was necessary to consider measures to prevent sewage from leaching from the ground and polluting the surrounding environment.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the bottom surface and deep water of a closed water area from becoming anaerobic and to have a natural purifying action. A water purification device that can maximize the
It is to provide with a simple structure.

[0010]

As means for solving the above-mentioned problems, the present invention as claimed in claim 1 is to inject air mixed with bubbled air into pumped-up water pumped up by a submersible aeration pump. A water purifying device for a closed water area that drops and causes a wave action, including a frame, a water guiding void defined in the center of the frame, and a knitted contact material arranged on the entire surface of the frame. A contact filler that is filled inside the knitted contact material and that adsorbs and removes sludge in pumped water to biologically treat it, and a water conduit pipe that is detachably attached to the lower part of the water conduit gap, A water purifying apparatus for a closed water area is characterized in that a support frame is provided on the top of the frame body, and one or a plurality of floats and the submersible aeration pump are integrally attached to the support frame. .

According to a second aspect of the present invention, in the water purifying apparatus of the first aspect, an underwater aeration pump is arranged above the water guiding gap, and the water is pumped from the lower part of the water guiding pipe to the water surface through the water guiding gap. The gist of this is that the bubbling atmosphere is mixed and jetted down to make the water surface undulate.

A third aspect of the present invention is summarized in the water purifying apparatus according to the second aspect, wherein the submersible aeration pump is provided with an adjusting function for adjusting a falling diameter of the pumped water.

According to a fourth aspect of the present invention, in the water purifying apparatus according to the first aspect, a guide member is provided at the inlet of the submersible aeration pump for imparting a vortical flow to the pumped water in the water introducing gap. , And its summary.

Further, a fifth aspect of the present invention provides the water purifying apparatus according to the first aspect, wherein the contact filler is a long fiber having a large specific surface area such as acrylic.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. However, this is a representative example, and the present invention is not limited to the embodiments.

FIG. 1 is a diagram schematically showing a water purification apparatus according to the present invention. The frame body 1 of the device, as shown in FIG.
The frame structure is made of a material such as steel. That is, the frame body 1 has a cylindrical water guiding passage 2 formed therein by a frame structure. For example, the frame body 1 has a cylindrical shape of 160 cm on the outer diameter side and a coaxial cylinder of 66 cm on the inner diameter side, and its basic skeleton structure is formed by six support bodies vertically hung on the outer side and the inner side, respectively. .

A knitted contact material 3 is disposed on the frame body 1 so as to cover the entire surface of the substantially cylindrical shape.
Is formed of a material such as polyethylene or polypropylene, and in the frame 1, a gap between the outer periphery and the water guiding void 2 is filled with a contact filler 4 of a known shape made of polyethylene or polypropylene. As a result, on the surface of the filling material 4, pollutants such as sludge accumulated on the bottom surface and the like are adsorbed in closed water areas such as lakes and marshes. At that time, aerobic or anaerobic microorganisms adhere to the filler 4 to decompose and purify sludge accumulated in the closed water area.

In the frame body 1, a support frame 5 is formed by a frame member located at the top of the frame structure, and the support frame 5 has
One or a plurality of floats 6, 6, ... Are placed. The float 6 floats the entire apparatus on the surface of a closed water area such as a lake. This float 6
Preferably, three or four pieces are arranged on the support frame 5.

Further, an underwater aeration pump 7 is arranged on the support frame 5 above the water guiding space 2 so as to pump up the deep water in the closed water area. This submersible aeration pump 7
Is designed to suck oxygen in the atmosphere into the pumping water by the returning special impeller action, mix the bubbling mixed water with the high pressure jet again, and jet it into the sky in the morning glory shape to perform a ripple effect. There is.

Below the water guiding gap 2, a tubular water guiding pipe 8 is detachably arranged. The water guiding pipe 8 has an open bottom, and a submerged aeration pump 7 is used to form a deep layer near the bottom. It is designed to pump water to the surface. Also,
On the inflow side of the submersible aeration pump 7, as shown in FIG. 3, a plurality of guide vanes 9 extending outward in the water guide gap 2,
, ... are arranged, and the water guiding gap 2 is shown in the direction of the solid line arrow in the figure.
It is designed to give a vortex flow to the pumped water inside.

Therefore, when the submersible aeration pump 7 is driven,
As shown by the arrow in FIG. 1, while deep water near the bottom of the water conduit 8 is directly pumped from the bottom to the water guiding void 2, water near the water surface is introduced from the outer periphery of the frame 1 through the filler 3 to the water guiding void. Can lead to 2. At this time, the filler 4 can easily adsorb and remove nutrient salts such as nitrogen and phosphorus contained in water, sulfides, or organic matter, algae such as water-bloom, and sludge such as sludge. Material 4
These are biologically processed by bacteria that live in the field. Where the filler 4
For example, the frame 1 can be disassembled and easily cleaned as needed.

Therefore, in the above embodiment, the water guiding gap 2 having an open bottom and the water guiding pipe 8 detachably attached to the lower part of the water guiding gap 2 are provided in the central portion of the frame body 1 in the deep layer of the closed water area. Since it can be extended to the area, the water in the deep layer, which is likely to become anaerobic, can be pumped up and purified together with the sludge deposited on the bottom surface. In particular, the water located around the frame body 1 and near the bottom of the water guide gap 2 is in a half-forced agitated state, so that the area around the water purifier can be purified extensively.

Further, since the contact material 3 filled with the filling material 4 is arranged inside the frame body 1, the filling material 4 and the like are filled with nitrogen and phosphorus contained in water introduced from the peripheral edge of the apparatus. It is possible to adsorb and remove nutrient salts such as sulphur, organic matter, algae such as water-bloom, and sludge such as sludge, and decompose and remove the filler 4 by bacteria that live in the field.

Further, since the submerged aeration pump 7 is configured to jet and drop the pumped pumped-up air while mixing the bubbled atmosphere to cause a wave action, it is possible to increase the amount of dissolved oxygen in the water. You can

A support frame 5 is provided on the top of the frame body 1, and one or a plurality of floats 6 and an underwater aeration pump 7 are provided on the support frame 5.
Since the and are attached together, the submersible aeration pump 7
Of the vibrations transmits minute vibrations to the contact filling material 4 and the float 6 provided on the frame body 1 via the support frame to immobilize the microorganisms on the contact filling material 4 and also exist in a floating state. Will be As a result, the filler 4 is less likely to be clogged with microorganisms, and maintenance and inspection of the filler 4 and the like are easy.

Further, when the guide vane 9 is provided at the inflow port of the submersible aeration pump 7, the pumping water flows in the vortex direction in the water introducing gap 2, so that the flow in the contact filling material 4 also becomes diverse and purification by microorganisms. The action is also accelerated. Also, the contact filler 4
If long fibers having a large specific surface area such as acrylic are used, the packing density of the filter medium can be reduced, so that the filtration resistance is reduced and the purifying action of the filler 4 is improved.

Further, since the submersible aeration pump 7 is provided with an adjusting device for adjusting the falling diameter of the pumped water and is configured so that the falling diameter can be freely changed, for example, aquaculture ponds, agricultural ponds, etc. Or, it can be used even if the lake such as a regulating pond is small.

Further, when the submersible aeration pump 7 is arranged on the water surface of the lake and operated and operated, a landscape can be obtained by arranging a fountain tower on the water surface of the lake so that the fountain can be made.
Along with improving the water environment, it is possible to provide a landscape that is excellent in the surrounding environment.

Since the submersible aeration pump 7 can freely change the falling diameter, for example, a plurality of water purifiers may be provided depending on the size of the lake such as a culture pond, an agricultural pond, or a regulating pond. The pieces may be arranged at appropriate intervals. In that case,
The falling diameter of the submersible aeration pump 7 can be adjusted by adjusting the voltage applied to the submersible aeration pump 7, but other known adjusting devices may be used.

[0030]

As described above, according to the water purifying apparatus of the present invention, it has the submerged aeration pump that performs the wave action by mixing the bubbled atmosphere in the pumped water and jetting and dropping it. A water-conducting void having an open bottom portion is formed so as to penetrate therethrough. This makes it possible to easily pump water in the deep layer portion, which is likely to become an anaerobic state, and by the knitted contact material arranged on the outer periphery of the frame body and the filler filled inside the contact material, nitrogen, Nutrients such as phosphorus, sulfides, or organic substances,
It has a structure that adsorbs algae such as water-bloom and sludge such as sludge and biologically processes them.

As a result, eutrophication of aquatic ponds, artificial lakes and ponds for agricultural ponds, various regulating ponds, or closed water areas such as lakes and marshes into which nutrient salts flow with the inflow of domestic wastewater is prevented and / or Can be improved. That is, the abnormal occurrence of algae such as freshwater red tide and water-bloom, filtration failure in water supply facilities, deterioration of water quality such as off-flavor of water, prevention of mortality of fish, etc.
It is possible to purify water to the extent that it meets agricultural water discharge standards. In addition, since it is mixed water containing oxygen in the atmosphere that has been bubbled into the pumping water by a submersible aeration pump, it can be spouted in the morning glory shape into the sky to perform a ripple effect, so that the microorganisms in the sediment can be treated. Respiratory action can prevent and / or improve the consumption of oxygen in the water, leading the bottom surface and deep water to an anaerobic state.

In particular, sludge contains various pollutants, and there are probably several tens or more kinds of sludge, and the sludge is sprayed to the upper surface of the water surface and finely atomized. Among the substances, pollutants such as trihalomethane, mercury, and ammonia, which are relatively easily diffused, are diffused into the atmosphere and can be removed. In the case of the present invention, the ability to decompose and purify by microorganisms in the natural world is excellent, and in order to exert the ability, the necessary amount of oxygen is supplied and the pumped water is sprayed into the atmosphere. That is, the substance deposited on the bottom of a lake or the like is brought into contact with the atmosphere to absorb oxygen, so that the purification action by microorganisms in the natural world can be promoted. In other words, aerobic bacteria (microorganisms) decompose and remove pollutants in sludge. As a result, there is no need to put chemicals into the contaminated water area or to use large-scale dredging machines when purifying water, and it does not burden the ecosystem at all.

Since only one or a plurality of floats are used to float on the water surface, large-scale construction work such as civil engineering work is not required, equipment costs are low, and running costs can be kept low. . In addition, because it can be placed in a floating state on the water surface by a float, it is possible to create a beautiful landscape with a fountain tower placed on the water surface of a closed water area.

Further, due to the vibration of the submersible aeration pump, the float and the contact filler also vibrate, and the microorganisms adsorbed on the contact filler are not only fixed but also polluted in the suspended state. It has the advantage that it can be disassembled and removed.

[Brief description of drawings]

FIG. 1 is a diagram schematically illustrating a water purification device for a closed water area according to the present invention.

FIG. 2 is a view showing a frame structure of the water purification device.

FIG. 3 is a diagram illustrating a state in which pumped water flows into a submersible aeration pump.

[Explanation of symbols]

1 frame 2 Water transfer gap 3 contact materials 4 Filling material 5 Support frame 6 float 7 Submersible aeration pump 8 water conduit 9 guide vanes

Claims (5)

[Claims] 1. A water purification apparatus for a closed water area, which mixes bubbled air with pumped-up water pumped up by a submersible aeration pump and jets and drops it to perform a wave action, including a frame and a center of the frame. Water-conducting voids defined in the section, a knitted contact material arranged on the entire surface of the frame, and the inside of the knitted contact material are filled, and the sludge in the pumped water is adsorbed and removed for biological treatment. And a water guide pipe that is detachably attached to the lower part of the water guide gap, and a support frame is provided on the top of the frame body, and the support frame has one or more floats and the submersible aeration pump. A water purification device for closed water areas, characterized by being attached integrally. 2. The submersible aeration pump is arranged above the water guiding space, and is pumped up from the lower part of the water guiding pipe to the water surface through the water guiding space, and mixed with bubbled air to be jetted and dropped to drop the water surface. The water purification device for closed water bodies according to claim 1, wherein the water purification device is made to swell. 3. The water purifying apparatus for closed water areas according to claim 2, wherein the submersible aeration pump has an adjusting function for adjusting a falling diameter of the pumped water. 4. The water purifying apparatus for closed water bodies according to claim 1, wherein a guide member is provided at an inflow port of the submersible aeration pump to impart a flow in a vortex direction to the pumped water in the water introducing gap. 5. The water purifier for closed water areas according to claim 1, wherein the contact filler is a long fiber having a large specific surface area such as acrylic.