JPH0645030B2 - Ozone water treatment equipment - Google Patents

Description

Description: [Industrial field of application] The present invention relates to a method for improving water quality, injecting ozone into cleaning of a filtering device, improving the water quality of raw water, and cleaning the filtering device with high efficiency and economically. It is a thing.

[Conventional technology]

Fig. 2 is a flow chart showing a piping system in a conventional bathhouse. In the figure, (1) is bath water, (2) is a circulating water amount adjusting valve, (3) is a hair collector, and (4) is a raw water pump. , (5) is a positive circulation valve,
(6) is a backwash valve, (7) is a backwash drain valve, (8) is a filtration device, and (9) is an air vent valve, which automatically discharges the air accumulated in the filtration device (8). (10) is a bath return valve, (11) keeps the bath water temperature constant at each heat exchange, (12) is a hypochlorous acid tank, (13) is a sodium hypochlorite injection pump, (14) Is a polymer coagulant tank, (15) is a polymer coagulant injection pump, (16) is a solid chlorine feed tank, (17) is a backwash water supply pipe, (18) is a water supply valve, (19)
Is a backwash water storage tank, and (20) is a backwash supply valve.

Next, the operation will be described. The bath water (1) is cleaned by the circulation system indicated by arrow A. That is, valves (2), (5), (10) are open, valves (6), (7), (20) are closed, raw water pump (4), chemical injection pumps (13), (14) are in operation. It is in a state. Therefore bath water (1)
Sodium hypochlorite (12) and polymer flocculant (14) are injected, and sterilization with hypochlorous acid causes the macroscopic flocculation of fine pollutants in bath water by the polymer flocculant. Drug (1
Bath water (1) injected with 2) and (13) is bath water with the hair collector (3).
Hair mixed in (1) is removed, and water is circulated by the raw water pump (4). Bath water sent by the raw water pump (4)
(1) is a solid chlorine input tank when the pollution level is high.
Solid chlorine is added from (16) and mixed into the bath water (1) to increase the amount of the drug. The bath water (1) sterilized and coarsely flocculated by the above-mentioned drug enters from the upper part of the filter (8) The pollutants coarsely flocculated by the filter medium of the filtration device (8) are
It is captured by the filter medium. The air partially mixed in the filtering device (8) is automatically discharged by the air vent valve (9) when a certain amount of air is reached. Next, the bath water (1) from which contaminants have been removed by the filtration device (8) passes through the bath return valve (10), is heated to an appropriate temperature by the heat exchanger (11), and is sent to the bath.

Next, if the permissible amount of contaminants of the filter medium of the filter (8) is captured, the effect of the filter is lost, so the contaminant captured at this stage must be discharged to the outside of the system, that is, the arrow B indicates to the filter. This example will be described because the backwashing and cleaning of the system of (1) is required.

For example, tap water is connected to the backwash water supply pipe (17) and the water supply valve (1
8) is opened and water is stored in the backwash water storage tank (19). The state of the system valve at the time of backwash is such that valves (20), (6), (7) are open, and valves (2), (5),
(10) is closed, raw water pump (4) is in operation, chemical pump (13), (1
5) is in a stopped state. That is, the water in the backwash storage tank passes through the backwash valve (20), the raw water pump (4), the valve (6), and is blown upward from the lower part of the filtration device (8). The contaminants captured on the valve were pushed out by backwashing water, and the valve (7)
It is discharged as drain through the system.

[Problems to be solved by the invention]

Since the conventional water treatment device for circulating water, which has a conventional filtering device, is configured as described above, it is necessary to increase the amount of chemicals such as sodium hypochlorite, polymer flocculant, and chemicals when highly polluted. The solid chlorine agent for requires a large amount, for example, has a strong chlorine odor in the bath, which not only makes people uncomfortable but also corrodes metals and kills plants.
In addition, the polymer flocculant causes excessive coarse flocculation, which blocks the filter medium surface of the filtration device at an early stage, and therefore requires backwashing many times. Since it is composed by stacking things, microorganisms usually propagate, and if this microorganism grows in the filter medium, for example, it cannot be completely removed by only backwashing with tap water, so the filter medium cannot be recovered, and in rare cases There was a problem that the water leaked and was sent to the bathhouse.

This invention has been made in order to solve the above problems, a large reduction or elimination of the need for chemicals, remove the microorganisms that have propagated in the filter medium, the backwashing frequency of the filtration device or the amount of backwashing water. The purpose of the present invention is to obtain a water treatment device that can significantly reduce the water content, measure the complete recovery of the filter medium, and greatly improve the water quality and atmosphere.

[Means for solving problems]

The ozone treatment apparatus according to the present invention efficiently reacts and absorbs ozone in raw water to improve the water quality, greatly reduces or eliminates the use of chemicals, and further uses ozone water and fine ozone to backwash the filter medium of the filter. The gas is capable of efficiently removing the microorganisms generated inside the filter medium and the trapped pollutants.

[Action]

The ozone water treatment device for improving water quality in this invention branches a part of raw water or wash water, and arranges an ejector in the branch circuit to make ozone and generate a fine amount of ozonized gas to cause cavitation of a raw water pump. It suppresses the amount of ozonized gas that does not exist, improves the ozone absorption rate by stirring the pump Emperor, and blows ozone water and fine unreacted ozonized gas into the filter medium when backwashing the filter medium of the filtration device. It is possible to kill the microorganisms generated at the same time and remove the contaminants between the layers of the filter medium to the outside of the system by the floating force of the fine ozonized gas, so that the filter medium can be efficiently cleaned.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, (21) is a circulating water branch valve, (22) is a backwash water branch valve,
(23) is an ejector, which sucks gas into fine air bubbles and mixes when water is passed through at a flow rate. (24) is a branch water return valve, which is mixed with the main pipe on the suction side of the raw water pump (4). (25) is an ozone generator that generates ozone from air or oxygen. (26) is an ozone supply valve, and (27) is a check valve, which is arranged to prevent backflow of water to the ozone generator.

Next, the operation will be described. The bath water (1) is cleaned by the circulation system indicated by arrow A. That is, valves (2), (5), (10), (2
1), (24), (26) open, raw water pump (4), ozone generator
(25) is in operating condition, that is, bath water (1) is valve (2), hair collector
(3), raw water pump (4), valve (5), filtration device (8), through valve (1
It is heated by the heat exchanger (11) from 0) and returned to the bath,
In order to increase the concentration of ozone water, the filtered water that has passed through the filter device that has been purified water is branched into a set amount and passed through the valve (21) to the ejector (2
3), through the valve (24), the circulating water of the bath water (1) and the suction side of the raw water pump (4) are mixed.

At this time, the ozone generator (2
The ozonized gas generated by 5) is the valve (26) and the check valve.
After being injected into the ejector (23) via (27), the ozonized gas is made into fine bubbles and mixed with the branched water to oxidize the branched water and sodium hypochlorite several times to several thousand times. It is said that ozone, which is said to have power, is used to sterilize water and to improve water quality by decomposing organic matter, etc., and part of the ozone water and some unreacted ozonized gas remain in the form of atomized bubbles in the raw water pump (4). Is mixed on the suction side of
In (4), mixing is promoted by the raw water pump emperor,
The ozonized water and fine ozonized gas of the branched water are highly efficiently reacted and absorbed by the total amount of circulating water. Therefore, by this, the total amount of circulating water is improved to high quality water by ozone, enters the filtration device (8), the suspended solids are captured in the filter material layer, and the water quality including sterilization, decolorization, and deodorization is improved by ozone and cleaned. It becomes clear water and is returned to the bathhouse.

On the other hand, the suspended matter trapped in the filter medium of the filtration device (8)
The substance captured by the system indicated by arrow B is discharged to the outside of the system. That is, the backwash water in the storage tank (19) enters most of the filtering device through the valve (20), the circulation pump (4), and the valve (6), while the backwash water is branched to the valve (22). 23), which is the ozone supplied by the ozone generator (25) as described above, while the backwashing branch water partly improves the water quality, while the ozone water becomes fine ozonized gas, and the valve (20) After mixing with the backwash water that has passed through, the mixing is promoted by the circulation pump (4), the whole amount is turned into ozone water, and the fine bubbles are in a finely mixed state. The backwash water in the above state enters from the lower side of the filtration device (8), and the filter medium is washed from the lower side to the upper side.At this time, the ozone water is a substance trapped between the filter medium layers, and further bacteria generated in the filter medium are bacteria, A large amount of wash water is required to discharge the trapped substances by the wash water only, but the fine air and bubbles of unreacted ozonized gas bacteria the microorganisms generated in the filter medium layer. At the same time, while separating the filter media to improve the ventilation, the levitation force of the air is accelerated, so the cleaning of the filter media is efficiently removed and cleaned and recovered with a much smaller amount of water than the amount of wash water using only wash water. You will be able to

In addition, although the bath circulating water is described in the above embodiment, it may have a similar filtering device and may not circulate in a transient manner, and the circulating branched water is branched from the clean water discharged from the filtering device. Although ozone was injected, this may be on the discharge side of the raw water pump, and it has a structure that allows branching and injection of ozone from another system.
The suction side of the raw water pump may be used, and the valve of the system may be a manual valve or an electric valve, and its location may be such that circulating water and wash water can be branched and passed. Further, in the above-mentioned embodiment, in order to leave the specified residual chlorine in the bath, a solid chlorine input tank was provided, but this may be any one that can be injected, and even if there is no restriction of residual chlorine, it is possible to Has the same effect.

〔The invention's effect〕

As described above, according to the present invention, as a water treatment device for improving water quality, ozone is injected into a part of the circulating water on the discharge side of the raw water pump, and the fine air amount of ozonized gas is set within the cavitation of the raw water pump. The ozone reaction efficiency can be increased by stirring and mixing with a pump, and the amount of chemicals other than ozone used can be reduced or greatly reduced, so that the chlorine concentration in the bath can be reduced to a large extent. Therefore, the corrosion of the metal used in the building and the atmosphere can be greatly improved, and the bath becomes a pleasant bath. In addition, it is economical to wash the filter medium with ozone water and washing water containing a mixture of fine ozonized gas bubbles, because it can be recovered by washing in a small amount, and it is very hygienic bath water to sterilize microbial bacteria inside the filter medium. There is an effect that can be obtained.

[Brief description of drawings]

FIG. 1 is a piping system flow diagram showing an ozone water treatment device for bath water circulating according to the present invention, and FIG. 2 is a piping system flow diagram showing a conventional circulating water treatment device for a bath. (21) is a circulating water branch valve, (22) is a backwash water branch valve, (23) is an ejector, (24) is a branch water return valve, (25) is an ozone generator, and (26) is an ozone supply valve. (27) is a check valve. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] 1. A device for improving water quality, comprising a filtering device, wherein a branch pipe for branching a part of the raw water from a discharge side of the raw water pump is provided, and an ejector is provided in the branch pipe to suck the ejector. The ozone obtained by the ozone generator is injected and mixed into the section, water is treated with ozone and ozone water is produced, and the ozone-watered branch pipe is returned to the suction side of the raw water pump, and the above-mentioned ozone water and Unreacted ozonized gas is supplied by the raw water pump within the range where cavitation does not occur, and the stirring of the pump emperor improves the ozone absorption efficiency by treating the entire amount of raw water with ozone water and promoting the reaction of the unreacted ozonized gas in the raw water pump The ozone treatment device is characterized in that the ozone water treatment can be performed. 2. A filter having a filter device for regularly cleaning a filter medium of the filter device, wherein a branch cleaning pipe capable of branching a part of cleaning water is provided, and an ejector is arranged in the branch pipe to suck the ejector. The ozone obtained by the ozone generator is injected and mixed into the section, ozone water and fine ozonized gas bubbles are created, and the wash water is merged on the suction side of the raw water pump, and the unreacted ozone is further absorbed and mixed by the raw water pump,
By discharging the filter medium cleaning circuit from the cleaning water supply unit provided at the bottom of the filter, the filter medium of the filter is cleaned with ozone water and fine air of ozonized gas to clean the filter medium and sterilize bacteria generated in the filter medium. An ozone water treatment device characterized in that