JP2014064976A - Water treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-scale water treatment apparatus allowing use of purified water at any time, miniaturization and space saving.SOLUTION: A water treatment apparatus comprises a water storage tank 4 for storing water to be treated, an ozone generator 6 generating ozone and a water supply pipe 21 taking out water from the storage tank 4, and an in-tank treatment unit 10 is provided within the storage tank 4. The in-tank treatment unit 10 is arranged in the lower part of a water inlet of the storage tank 4 and has, in a housing case 11, a first filter 13, an upper aeration chamber 12 and a lower aeration chamber 14 arranged in the upstream and/or the downstream of the first filter 13 and supplying ozone generated by the ozone generator 6. Since the water supplied to the storage tank 4 is first water-treated by the first filter 13 arranged in the storage tank 4 and ozone and thus stays within the storage tank 4, leading to effects of miniaturization and space saving.

Description

  The present invention is a water treatment apparatus for small-scale facilities, which removes, deodorizes, decolorizes, and sterilizes iron and manganese components contained in well water, river water, rainwater, tap water, etc. (treated water). The present invention relates to a water treatment apparatus that performs water treatment by organic matter decomposition or the like.

  There is a desire to use water and rainwater drawn from water sources such as wells and rivers as, for example, household laundry and bath water, or to spray water for plant cultivation.

  However, recently, the quality of well water has been remarkably deteriorated due to changes in the strata itself or the penetration of pollutants into groundwater veins, and it has become difficult to use the well as it is. Similarly, river water often deteriorates in water quality. The deterioration of water quality as used herein means that the turbidity and chromaticity of water is increased, or that an odor is generated from water.

  For example, in well water, turbidity and chromaticity of water may be high due to so-called “red water” due to the high content of iron and manganese components. Hateful.

  Conventionally, a large number of water treatment apparatuses have been proposed for treating the water to be treated having such deteriorated water quality.

  The water treatment equipment oxidizes iron in water by ozone treatment, removes the oxidized iron with a filter medium, and sterilizes bacteria, Escherichia coli, viruses, etc. in well water by oxidizing the ozone. A water well improvement device has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 2715244

  However, in such a conventional water treatment apparatus, it has the structure which has the 1st stage processing machine and 2nd stage processing machine which fill a filter medium and an active filter medium on the outer side of a water receiving tank, and the apparatus is enlarged. .

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a water treatment apparatus that can be reduced in size and saved in space.

  In order to achieve this object, the present invention comprises a water storage tank for storing water to be treated, an ozone generator for generating ozone, and a water supply pipe for taking out water in the water storage tank. An in-tank treatment unit for removing iron, manganese components, etc. contained in the water to be treated is provided in the tank, and the in-tank treatment unit is disposed below the water inlet portion in the water storage tank, The first filter and an aeration chamber for supplying ozone generated by the ozone generator on the upstream side and / or downstream side of the first filter are provided. The purpose of the period is achieved.

  According to the present invention, a water storage tank for storing water to be treated, an ozone generator for generating ozone, and a water supply pipe for taking out water in the water storage tank are included in the water to be treated in the water storage tank. An in-tank processing unit for removing iron, manganese, and the like to be removed. The in-tank processing unit is disposed below a water inlet in the water storage tank, and a first filter and the first filter are disposed in a storage case. Since the aeration chamber for supplying ozone generated by the ozone generator is provided on the upstream side and / or downstream side of one filter, the water supplied to the water storage tank is first placed in the water storage tank. Since the water treatment is performed by the first filter and ozone, and the water is stored in the water storage tank, it is possible to obtain an effect that the size and the space can be saved.

Schematic configuration diagram of the water treatment apparatus of the present invention The block diagram which shows the control structure in the water treatment apparatus of this invention The flowchart of the control part in the water treatment apparatus of this invention

  The water treatment apparatus according to claim 1 of the present invention includes a water storage tank for storing water to be treated, an ozone generation apparatus for generating ozone, and a water supply pipe for taking out water in the water storage tank. An in-tank processing unit for removing iron, manganese components, etc. contained in the water to be treated is provided in the tank, and the in-tank processing unit is disposed below the water inlet in the water storage tank, The first filter and an aeration chamber for supplying ozone generated by the ozone generator are provided on the upstream side and / or the downstream side of the first filter. As a result, the water supplied to the water storage tank is first subjected to water treatment by the first filter and ozone disposed in the water storage tank and collected in the water storage tank, so that it is possible to reduce the size and save space. There is an effect that can be done.

  Further, the first filter may be composed of biological activated carbon that performs water treatment by an adsorption action of activated carbon and an organic substance decomposition action by microorganisms. Thereby, since the organic substance adsorbed on the activated carbon is decomposed by the microorganisms, there is an effect that the life of the first filter is extended and the maintenance frequency is reduced.

  Moreover, you may make it the structure which makes the ozone supply position for supplying ozone to the to-be-processed water downstream of the said 1st filter both inside and outside of the said in-tank processing unit. As a result, iron, manganese components, and the like can be removed when passing through the first filter, and the water quality can be maintained by sterilizing the water stored in the water storage tank after passing through the first filter.

  Moreover, you may make it the structure which makes the ozone supply amount in the period when the water supply to the said storage tank is not performed smaller than the ozone supply amount in the period when the water supply is performed. Thereby, since the ozone supply amount can be optimized, power consumption can be reduced, and an additional process for treating surplus ozone is not required.

  Moreover, you may make it the structure which arrange | positions the 2nd filter for removing the iron, manganese component, etc. which are contained in to-be-processed water in the said water supply pipe. Thereby, there exists an effect that the removal of an ozone component and the iron and manganese component oxidized with ozone within the water storage tank can be reliably removed.

  Further, the second filter may be composed of activated carbon alone or manganese sand in which the activated carbon and the manganese component of the water to be treated are removed by a contact filtration method. Thereby, there exists an effect that the removal of an ozone component and the reliable removal of an iron content and a manganese component are attained.

  Moreover, you may make it the structure which makes the ozone supply amount at the time of backwashing of the said 2nd filter larger than the ozone supply amount at the time of not backwashing. Thereby, since backwashing is performed efficiently, the backwashing time can be shortened.

  Further, it may be configured to have a water level detecting means for detecting the water level of the in-tank processing unit, and to perform a notification for urging maintenance when the water level detecting means detects a full water level. As a result, the clogged state of the first filter can be detected, and the need for maintenance can be easily determined.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a water treatment apparatus 1 according to the present invention.

  As shown in FIG. 1, a pump 2 for pumping up water to be treated (well water in this embodiment) and a water storage tank 4 are connected by a water storage pipe 3, and the water to be treated is pumped up by the pump 2. Accumulated inside. A water level detection means 17 is provided in the water storage tank 4. By controlling the operation of the pump 2 in accordance with the signal from the water level detection means 17, water at a predetermined water level can be constantly stored in the water storage tank 4.

  As treated water, river water, rain water, tap water and the like can be targeted in addition to well water.

  When the water to be treated is stored in the water storage tank 4, all of the water to be treated discharged from the tip of the water storage pipe 3 was first removed of iron, manganese components, etc. by the tank internal processing unit 10. Later, it is stored in the water storage tank 4.

  The in-tank processing unit 10 includes a storage case 11, an upper aeration chamber 12, a first filter 13, and a lower aeration chamber 14.

  The size of the storage case 11 is determined from the capacity of the first filter 13 determined by the water quality level of the water to be treated and the target water quality level after treatment. Moreover, it is preferable that the shape of the storage case 11 is cylindrical from the viewpoint of price.

  In the upper aeration chamber 12, air containing ozone generated by the air pump 5 and the ozone generator 6 in the ozone generation control box 8 is supplied into the water to be treated from the diffuser pipe 15. The ozone generator 6 has a discharge electrode, for example, and generates ozone by silent discharge generated by applying a high voltage pulse to the discharge electrode. The air diffuser 15 is made of a porous member such as pumice.

  The check valve 7 is provided to prevent water from entering the ozone generator 6 and the air pump 5. Ozone supply causes oxidation, deodorization, decolorization, sterilization, and organic matter decomposition of iron and manganese components. In order to reduce the molecular weight by decomposing organic matter, if the first filter on the downstream side contains activated carbon, its adsorption action can be improved.

  The first filter 13 removes iron and manganese components solidified by ozone oxidation. In addition, deodorization and organic matter decomposition are performed. The material of the 1st filter 13 is comprised by laminating | stacking single or a plurality of activated carbon, biological activated carbon, filter media for iron removal, manganese sand, filter sand, ceramic filter media, anthracite, and zeolite. In view of the lifetime and price, it is preferable to use biological activated carbon.

  Biological activated carbon performs water treatment by the action of adsorption of activated carbon and the action of organic matter decomposition by microorganisms, and the organic matter adsorbed on the activated carbon is decomposed by microorganisms, thus extending the life. In addition, by combining ozone with biological activated carbon, organic matter that has been reduced in molecular weight to a level that can be easily biodegraded by ozone is removed by biological activated carbon on the downstream side, so that organic matter decomposition can be performed efficiently. it can.

  In the lower aeration chamber 14, air containing ozone generated by the ozone generator 6 is supplied to the water to be treated from the diffuser 16. The supply of ozone is performed both inside and outside the in-tank processing unit 10. By supplying ozone to the inside of the in-tank processing unit 10, the dissolved oxygen concentration in the first filter 13 can be increased, so that the action of microorganisms in the biological activated carbon can be activated.

  In addition, by supplying ozone to the outside of the in-tank processing unit 10, it is possible to prevent bacteria from breeding while remaining in the water storage tank 4 for a long time, and maintaining water quality. It becomes possible.

  Regarding the ozone supply control method to the upper aeration chamber 12 and the lower aeration chamber 14, the ozone supply amount during the period when the water supply to the water storage tank 4 is not performed is the ozone supply period during which the pump 2 supplies the water. The amount is less than the supply amount. As a result, the amount of ozone supplied can be optimized, so that less power is consumed and no additional process is required to treat surplus ozone. For example, during a period when water supply is not performed (a period during which the water quality in the water storage tank 4 is maintained), ozone supply is repeated 15 minutes ON-15 minutes OFF, and during the period when water supply is being performed, ozone supply is always performed. Control is performed as ON.

  The water level detection means 18 detects the water level in the in-tank processing unit 10. When the water level detection means 18 detects the full water level, it is determined that the first filter 13 is clogged, and a notification that prompts maintenance is performed. Thereby, the necessity for maintenance can be easily determined. When the first filter 13 is clogged and the speed passing through the first filter 13 is slower than the water supply speed by the pump 2, the water level in the in-tank processing unit 10 is changed in the water storage tank 4. It becomes higher than the water level.

  The second filter 20 is for removing the ozone component and surely removing the iron and manganese components. When the removal of iron and manganese components in the in-tank processing unit 10 is insufficient, chromaticity and turbidity may increase due to ozone oxidation into the water storage tank 4, but this can be prevented. . The case for housing the second filter 20 has, for example, an outer diameter of φ265 mm × a height of 1500 mm.

  The material of the 2nd filter 20 is comprised only by activated carbon or manganese sand which removes the activated carbon and the manganese component of to-be-processed water by a contact filtration method. The ozone component is removed by the activated carbon, and comfortable water without the ozone component can be obtained when the user uses it as domestic water. At the same time, iron and manganese components are removed. Manganese sand has a high ability to remove manganese components and is effective when the manganese component of water to be treated is high.

  About the control method of ozone supply, the ozone supply amount at the time of backwashing of the 2nd filter 20 is made larger than the ozone supply amount at the time of not backwashing. Thereby, since the backwashing is performed while efficiently decomposing the organic matter adsorbed on the second filter 20, the backwash time can be shortened. Moreover, when manganese sand is contained in the second filter 20, it is preferable to supply an ozone supply amount sufficient for reliable regeneration of manganese sand by supplying ozone during backwashing. This is because the manganese component in the divalent ionic state contained in the water to be treated becomes a trivalent state due to adsorption to manganese sand, and if there is no oxidizing agent such as ozone, the adsorption capacity will be lost. This is because the ozone supply (oxidant supply) ensures the action of the tetravalent original manganese sand and regeneration of the adsorption capacity. At the time of backwashing, the water in the water storage tank 4 passes through the second filter 20 in the direction opposite to that at the time of water treatment by the operation of the pump 19 and is drained by the backwashing pipe 27. Regarding the control method, for example, the ozone supply is always ON during backwashing, and the ozone supply is repeatedly ON for 15 minutes and OFF for 15 minutes when backwashing is not being performed (the period during which water quality in the water storage tank 4 is maintained) Control as

  When a user in the house 24 twists the faucet at the tip of the water supply pipe 21, the pressure detection means 25 on the downstream side of the pump 19 detects a predetermined pressure value or less, and the pump 19 operates. For example, the pump 19 operates when the pressure is 0.1 MPa or less, and the pump 19 stops when the pressure is 0.16 MPa or more. By the operation of the pump 19, the water in the water storage tank 4 passes through the second filter 20 to become purified water, and is discharged from the distal end portion of the water supply pipe 21. Moreover, when using it as drinking, the water which passed the high pressure pump 22 and UF filter 23 (it is good also as RO membrane) arrange | positioned in the downstream of the water supply pipe 21 should just be used, for example.

  FIG. 2 is a block diagram showing a control configuration in the water treatment apparatus 1 of the present invention. In this embodiment, a water level detection means 17 and a water level detection means 18 are installed in the water storage tank 4, a pressure detection means 25 is installed downstream of the pump 19, and a backwash detection means 26 is installed in the second filter 20. The control unit 9 provided in the water treatment device 1 is based on the input signal input to the control unit and the operation course input signal, and the air pump 5, the ozone generator 6, the pump 19, and A display unit (not shown) is controlled.

  For example, according to the water quality level of the water to be treated, the ozone supply method during the period of maintaining the water quality in the water storage tank 4 is “5 minutes ON−15 minutes OFF repeat”, “10 minutes ON” It is possible to select from three courses: “15 minutes OFF repeat” and “15 minutes ON—15 minutes OFF repeat”.

  FIG. 3 shows a flowchart of the control unit in the water treatment apparatus 1 of the present invention, and the operation will be described below.

  First, when the user inputs “operation course”, next, it is checked whether the water level detection means 17 is supplying water to the water storage tank 4, and whether the backwash detection means 26 is backwashing. When the pressure detection means 25 on the downstream side of the pump 19 checks whether the pressure is lower than the predetermined pressure value, the water tank 4 is being supplied with water, backwashed, or satisfies any of the predetermined pressure values or lower. The air pump 5 and the ozone generator 6 are always turned on, and ozone is supplied to the water to be treated. At other times, the air pump 5 and the ozone generator 6 are intermittently turned on (the intermittent method is repeated ON-OFF at the time shown in the “operation course”) to maintain the water quality in the water storage tank 4.

  Next, whether or not the water level of the in-tank processing unit 10 is lower than the full water level is checked by the water level detecting means 18, and it is determined that the first filter 13 is clogged when the full water level is reached. (Not shown).

  The water treatment apparatus according to the present invention is advantageous in that it can be reduced in size and space, and is included in well water, river water, rain water, tap water, etc. (treated water). It is useful as a water treatment device for small-scale facilities that performs water treatment by removing iron, manganese components, etc., deodorizing, decolorizing, sterilizing, and decomposing organic matter.

DESCRIPTION OF SYMBOLS 1 Water treatment apparatus 2 Pump 3 Water storage pipe 4 Water storage tank 5 Air pump 6 Ozone generator 7 Check valve 8 Ozone generation control box 9 Control part 10 In-tank processing unit 11 Storage case 12 Upper aeration chamber 13 1st filter 14 Lower side Aeration chamber 15 Aeration pipe 16 Aeration pipe 17 Water level detection means 18 Water level detection means 19 Pump 20 Second filter 21 Water supply pipe 22 High pressure pump 23 UF filter 24 House 25 Pressure detection means 26 Backwash detection means 27 Backwash pipe

Claims (8)

A water storage tank for storing treated water;
An ozone generator for generating ozone;
A water supply pipe for taking out the water in the water storage tank,
An in-tank treatment unit for removing iron, manganese components, etc. contained in the water to be treated is provided in the water storage tank,
The in-tank processing unit is
Disposed below the water inlet in the water storage tank,
A water treatment characterized by comprising a first filter and an aeration chamber for supplying ozone generated by the ozone generator upstream and / or downstream of the first filter in the housing case. apparatus. 2. The water treatment apparatus according to claim 1, wherein the first filter is composed of biological activated carbon that performs water treatment by an adsorption action of activated carbon and an organic substance decomposition action by microorganisms. The water according to claim 1 or 2, wherein ozone supply positions for supplying ozone to the water to be treated downstream of the first filter are both inside and outside the in-tank processing unit. Processing equipment. The ozone supply amount in a period when water supply to the water storage tank is not performed is made smaller than an ozone supply amount in a period during which water supply is performed. The water treatment apparatus as described. The water treatment apparatus according to any one of claims 1 to 4, wherein a second filter for removing iron, manganese components, and the like contained in the water to be treated is disposed in the water supply pipe. 6. The water treatment apparatus according to claim 5, wherein the second filter is composed of activated carbon alone or manganese sand that removes manganese components of activated carbon and water to be treated by a contact filtration method. The water treatment apparatus according to claim 5 or 6, wherein an ozone supply amount at the time of backwashing the second filter is set to be larger than an ozone supply amount when the second filter is not backwashed. 8. The apparatus according to claim 1, further comprising a water level detection unit configured to detect a water level of the in-tank processing unit, wherein a notification that prompts maintenance is performed when the water level detection unit detects a full water level. The water treatment apparatus as described in.

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