JP3660421B2 - Reservoir purification equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to storage water purification equipment used for purification of water stored in pools, baths, ponds, etc. , in particular , stored water purification equipment combined with ozone treatment, and more particularly in the event of an emergency such as an earthquake disaster or drought. The present invention relates to a stored water purification facility with an ozone treatment device having a function of purifying stored water into drinking water.
[0002]
[Prior art]
As a purification system for purifying water stored in pools, baths, ponds, etc., a circulation system combining filtration and disinfectant injection is generally used, but recently, ozone has been further improved for the purpose of improving the purification effect. A combination of treatments is also used. The characteristic of ozone treatment is that turbidity and pollutants can be greatly reduced by the strong oxidative sterilization action of ozone, and further, chlorine-resistant microorganisms can be sterilized and inactivated. A conventional stored water purification facility combined with ozone treatment is shown in FIG.
[0003]
The water stored in the water storage unit 1 such as a pool, a bathhouse, or a pond is taken out from the bottom of the water storage unit 1 by the main circulation system 2 and returned to the water storage unit 1 from the side of the water storage unit 1. The main circulation system 2 is provided with a hair catcher 3, a circulation pump 4 and a filter 5. Thus, the stored water taken out from the water storage unit 1 is removed from the large solid material by the hair catcher 3 and pressurized by the circulation pump 4, and then the fine solid material is removed by the filter 5. It is disinfected with a chlorine agent and returned to the water storage unit 1.
[0004]
At this time, a part of the stored water is taken out from the upstream side or the downstream side of the filter 5 and sent to the ozone treatment device 6. The ozone treatment device 6 injects ozone gas generated by an ozone generator into stored water using an ejector, and ozone-treats the stored water, and then returns it to the upstream side of the pump 4. Ozone treatment decomposes soluble pollutants and sterilizes and inactivates chlorine-resistant microorganisms, and colloidal substances are aggregated and easily trapped in the filter 5.
[0005]
[Problems to be solved by the invention]
Conventional stored water purification equipment combined with ozone treatment has a much higher purification capacity than those without ozone treatment, but it is not possible to use purified water as drinking water in the event of an emergency such as an earthquake or drought. Can not. This is because in circulation purification of pools, baths, ponds, etc., chemicals such as chlorine are injected for disinfection, and the concentration in the pool is maintained at 0.4 mg / liter or more by the Ministry of Health and Welfare, Because there is no interest in the residue, the concentration of disinfection by-products often exceeds the water quality standard value of tap water.
[0006]
For this reason, in order to obtain drinking water from the stored water, an emergency dedicated purification device is required. However, an emergency dedicated purification device is large and expensive. Moreover, since it is customary that the purification equipment and the manufacturer are different, there is a problem that the inspection cost increases.
[0007]
The object of the present invention is to provide drinking water from the stored water in the event of an emergency such as an earthquake disaster or drought, and with an ozone treatment device that can avoid the increase in the size of purification equipment, the increase in cost, and the deterioration of maintainability as much as possible It is to provide the stored water purification equipment .
[0008]
[Means for Solving the Problems]
The stored water purification equipment of the present invention is a stored water purification equipment that removes and purifies solids while circulating water stored in a water storage section such as a pool, a bath, and a pond , and further disinfects, A main circulation system for taking out water stored in the water storage unit from the water storage unit and returning the water to the water storage unit; and an ozone treatment device that takes in the stored water from the main circulation system and returns it to the main circulation system again. The ozone treatment apparatus comprises a treatment apparatus main body for performing the ozone treatment and a purification unit attached to the treatment apparatus main body, and the purification unit is downstream of the ozone treatment section in the treatment apparatus main body. a is connected via a valve that is closed during normal, it is configured to purify an earthquake, incorporate a reservoir water after ozonation by the valve in an emergency drought or the like is opened to drinking water.
[0009]
When the stored water purification equipment of the present invention is used, in other than emergency , that is, in normal time , combined with ozone treatment by circulating the stored water circulated and purified in the purification equipment to the treatment equipment body of the ozone treatment equipment. Normal circulation purification is performed. In the event of an emergency, the stored water that has been subjected to ozone treatment by the treatment device body is sent to the purification unit. The stored water after the ozone treatment, that is, the ozone-treated water, is sterilized and inactivated by chlorine-resistant microorganisms due to the strong sterilization action of ozone, and further, disinfection by-products are also decomposed and reduced. Therefore, in the purification unit, drinking water can be obtained to such an extent that dissolved ozone contained in the ozone-treated water is decomposed and disinfection by-products remaining in the ozone-treated water are reduced and removed. Thus, drinking water is obtained from the stored water, and the purification unit is simple and inexpensive.
[0010]
Activated carbon treatment or ultraviolet treatment can be used for decomposition of dissolved ozone and reduction and removal of residual disinfection by-products. When there is a lot of turbidity, it is desirable to reduce the turbidity by combining membrane filters such as a membrane filter, UF membrane, and MF membrane.
[0011]
In the processing apparatus main body of the ozone processing apparatus, it is preferable to inject ozone gas into the stored water using an ejector. In general, in the ozone gas injection process, it is preferable that the amount of water is kept constant. From this point, the storage water intake part and the return part are directly connected by a bypass pipe with a valve, and the stored water is supplied from the return part in the main body of the treatment apparatus to the ozone treatment part by opening the valve provided in the bypass pipe. It is desirable to configure to send . Thereby, it is possible to send a predetermined amount of stored water to the ozone gas processing section through the bypass pipe regardless of increase or decrease of the demand amount (supply water amount) of drinking water.
[0012]
Here, if the intake unit is connected to the downstream side of the purification unit in the main circulation system and the return unit is connected to the upstream side of the purification unit, even if the purification unit is stopped, the return of the upstream side of the purification unit is returned. The stored water can be sent from the part to the ozone treatment part through the bypass pipe, and further sent to the purification unit.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a system diagram showing the structure of the ozone treatment apparatus for one example of the stored water purification equipment embodying the present invention, and FIG. 3 is a schematic diagram showing an example of the configuration of the purification unit.
[0014]
In this stored water purification facility, the ozone treatment device 6 of the stored water purification facility shown in FIG. 1 is replaced with the ozone treatment device shown in FIG. The ozone treatment apparatus shown in FIG. 2 includes a treatment apparatus main body 10 and a purification unit 20 attached thereto.
[0015]
The processing apparatus main body 10 is basically the same as the conventional ozone processing apparatus 6, and its point A is connected to point A 'in FIG. 1, and point B is connected to point B' in FIG. Yes. Due to this connection, in times other than emergency, that is, in normal times, the stored water flowing through the main circulation system 2 of the purification equipment is taken into the ozone treatment apparatus from the upstream side or the downstream side of the filter 5 through the intake valve 11. . The stored water taken into the ozone treatment device passes through the pressurizing pump 12, the ejector 13, the gas-liquid separation tower 14, and the check valve 15 in this order, and from the return valve 16 to the upstream side of the pump 4 in the main circulation path 2. Return.
[0016]
Here, the ejector 13 is supplied with ozone gas from the ozone generator 17 and injects the ozone gas into the stored water. The gas-liquid separation tower 14 is equipped with an ozonolysis tower 14a. The pressurizing pump 12 and the ozone generator 17 are connected to an emergency generator 19 in preparation for a power failure in an emergency. On the other hand, the downstream side of the intake valve 11 and the upstream side of the return valve 16 are directly connected by a bypass pipe 18 having a flow rate adjusting valve 18a.
[0017]
The purification unit 20 is connected between the gas-liquid separation tower 14 and the check valve 15 via a flow rate adjustment valve 21. The purification unit 20 has a structure in which the introduced water is filtered by the activated carbon cartridge 22 as shown in FIG. 3 (A), but the introduced water is treated by the ultraviolet ray generator 23 as shown in FIG. 3 (B). It may be a structure. Moreover, as shown to FIG.3 (C) (D), the structure which provides the membrane filter 24 in addition to these may be sufficient. The membrane filter 24 is a membrane filter, UF membrane, MF membrane or the like, and reduces and removes this when there is a lot of turbidity.
[0018]
Next, an operation method of the stored water purification facility will be described.
[0019]
Normally, in the processing apparatus main body 10 of the ozone processing apparatus , the pressurizing pump 12 and the ozone generator 17 are operated by a normal power source with the intake valve 11 and the return valve 16 opened and the flow rate adjusting valves 18a and 21 closed. . As a result, the stored water flowing through the main circulation system path 2 of the stored water purification facility is taken into the processing apparatus main body 10 from the upstream side or the downstream side of the filter 5, where it is ozone treated and returns to the upstream side of the pump 4. . Thus, ordinary ozone treatment is performed on the stored water circulating through the purification equipment. And by this ozone treatment, chlorine-resistant microorganisms are sterilized and inactivated, and disinfection by-products are decomposed and reduced.
[0020]
In the event of an emergency such as an earthquake disaster or drought, and when the power supply can be secured, the main circulation system 2 of the water purification facility is operated as usual with the intake valve 11 and the flow control valve 21 open and the return valve 16 closed. Meanwhile, the pressurizing pump 12 and the ozone generator 17 are operated. As a result, the stored water flowing through the main circulation path 2 is taken into the processing apparatus main body 10 through the intake valve 11 from the upstream side or the downstream side of the filter 5 and is subjected to normal ozone treatment. 21 is sent to the purification unit 20 where the dissolved ozone is decomposed or removed, and the remaining disinfection by-products are reduced below the water quality standard value of the tap water and the judgment standard value of the monitoring item guide. Thus, drinking water is obtained from the circulating purified water.
[0021]
At this time, if the flow rate adjustment valve 18 a provided in the bypass pipe 18 is opened, a part of the ozone-treated stored water (ozone-treated water) circulates through the bypass pipe 18 to the ejector 13. Therefore, it is possible to continue supplying a predetermined amount of water to the ejector 13 regardless of increase or decrease in the demand amount (supply water amount) of drinking water.
[0022]
If the power supply cannot be secured in an emergency, the pump 3 in the main circulation system 2 stops, so that the emergency generator 19 is opened with the return valve 16 and the flow rate control valve 18a open and the intake valve 11 closed. Operate. Thereby, the stored water in the water storage part 1 is directly introduced into the ozone treatment apparatus from the upstream side of the hair catcher 3 through the return valve 16. Then, the introduced water is sent to the ozone treatment section through the bypass pipe 18 and further sent to the purification unit 20 to become drinking water. Also at this time, the predetermined amount of water can be supplied to the ejector 13 by adjusting the opening degree of the flow control valve 18a.
[0023]
Even when the power supply can be secured and the pump 3 and the filtration unit 4 in the main circulation system 2 are damaged, the return valve 16 and the flow rate control valve 18a are opened, and the intake valve 11 is closed. Drinking water can be generated from the water.
[0024]
【The invention's effect】
As described above, the stored water purification equipment of the present invention includes a purification unit that purifies ozone treated water into drinking water together with a treatment apparatus main body in which an ozone treatment apparatus that ozone treats stored water performs ozone treatment, and Since the purification unit is simple and inexpensive, it is possible to avoid the increase in the size and cost of the purification facility as much as possible, although drinking water can be secured in the event of an emergency such as an earthquake or drought. Moreover, since the part which produces | generates drinking water becomes the same manufacturer as an ozone treatment apparatus, the deterioration of maintainability is also avoided.
[0025]
When the storage water intake part and the return part in the main body of the treatment device are directly connected by a bypass pipe with a valve, the inside of the main body of the treatment device is passed through the bypass pipe regardless of the increase or decrease in the amount of demand for drinking water (supply water amount) . A predetermined amount of water can be sent to the ozone treatment unit .
[0026]
When the storage water intake part is connected to the downstream side of the purification part in the main circulation system and the return part is connected to the upstream side of the purification part, the return of the upstream part of the purification part even when the purification part is stopped Since the stored water can be directly sent from the unit to the ozone processing unit and the purification unit in the processing apparatus main body through the bypass pipe, the production of drinking water can be continued.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a configuration of a conventional stored water purification facility combined with ozone treatment.
FIG. 2 is a system diagram showing the structure of an ozone treatment apparatus for one example of a stored water purification facility embodying the present invention.
FIG. 3 is a schematic diagram showing a configuration example of a purification unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water storage part 2 Main circulation system 3 Hair catcher 4 Circulation pump 5 Filter 6 Ozone processing apparatus 10 Processing apparatus main body 11 Intake valve 12 Pressurization pump 13 Ejector 14 Gas-liquid separation tower 15 Check valve 16 Return valve 17 Ozone generator 18 Bypass pipe 19 Emergency generator 20 Purification unit 22 Activated carbon cartridge 23 Ultraviolet generator 24 Membrane filter

Claims (3)

A storage water purification facility that removes and purifies solids while circulating water stored in a water storage section such as a pool, bathhouse, pond, etc. , and further disinfects the water stored in the water storage section. A main circulation system that is taken out from the water storage unit and returned to the water storage unit; and an ozone treatment device that takes in the stored water from the main circulation system and returns it to the main circulation system by ozone treatment. The treatment apparatus main body that performs the ozone treatment, and a purification unit attached to the treatment apparatus main body, the purification unit has a valve that is normally closed on the downstream side of the ozone treatment section in the treatment apparatus main body. The stored water purification equipment is configured to take in the stored water after ozone treatment and purify it into drinking water by opening the valve in the event of an emergency such as an earthquake or drought . Between the inlet portion and the return portion of the reservoir water in the processing apparatus main body is directly connected by a bypass pipe with a valve, the accumulated water by opening the valve provided in the bypass pipe from the return portion of the processing apparatus main body to the ozone treatment unit accumulated water purification installation according to claim 1, characterized by being configured to send. Wherein the intake portion of the reservoir water, the main circulation connected to the downstream side of the purifier in the system, the accumulated water purification installation according to claim 2, characterized in that connecting the return portion upstream of the purifier.

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