KR100494565B1 - A purification system and purification apparatus of waste wate - Google Patents

Abstract

The present invention is a wastewater supply speed purification device using an activated sludge method in which the wash water generated by washing the car is collected in an oil-water separation tank to separate oil and collected in the water collection tank, and the washing water collected in the water collection tank is pumped into the filter and the microorganism is cultured in a filter. The present invention relates to a purification system for car wash wastewater that is passed through to be purified, and a wastewater rapid purification device installed in the purification system, wherein the purified water purified by the wastewater rapid purification system using the activated sludge method is supplied to an oil / water separation tank or a collecting tank for circulation. Purification can be performed repeatedly, or the purified water can be recycled or discharged when washing the water with a constant water, and the washing water generated during washing is collected and immediately purified to prevent odors in summer. It prevents the habitat of insects such as mosquitoes and flies at the same time. Extremely simplified furnace (stage) and simple structure of waste water supply and purification system, light weight and simplicity make it easy to transport, install and project regardless of installation area, and shorten the purification time to improve purification efficiency. In addition, the purification efficiency can be improved by repeatedly purifying the purified water continuously.

Description

A Purification System And Purification Apparatus Of Waste Wate

The present invention is mainly to wash the water generated when washing the car, that is to circulate through the filter repeatedly cultured microorganisms to clarify and continuously purify, and to clean the car wash waste water purification system to recycle the purified water as necessary and its purification It relates to a rapid purification device installed in the system.

In more detail, the wash water generated by washing the car is collected in an oil-water separation tank to separate oil and collected in the water collection tank, and the waste water using the activated sludge method in which microorganisms are cultured in a filter by pumping the washing water collected in the water collection tank. Purify by passing through a rapid purifying device, supplying purified water purified by wastewater rapid purification system using activated sludge method to oil / water separation tank or collection tank to circulate and purify the purified water repeatedly. It is to provide a car wash and purification system that is intended to be recycled or discharged in time.

In particular, the washing water pumped from the water collection tank is first purified by a microbial culture filter in which microorganisms are cultured in a filter, and the primary purified water is passed through a conventional filter again to be discharged after the second purification. It is to provide a waste water supply purification device.

Conventional wastewater purification apparatuses that are commonly used are known Korean Utility Model Publication No. 1996-37413 "washing wastewater purification apparatus" and Utility Model Registration No. 267145 "wastewater treatment apparatus".

Korean Utility Model Publication No. 1996-37413 (Car Wash Wastewater Purification System) purifies the car wash wastewater generated by carrying out the car wash collected in the sump by passing it through the oil / water separation system, but the oil / water separation system washes the water collected in the sump. The waste water is supplied to the V-type sedimentation tank by a pump to allow sludge to settle, and the washed sludge from which the sludge has been removed flows into the floating-tank over the V-type sedimentation tank. After the oil and oil have been removed, they are introduced into the oil and water separation tank, and the car wash waste water introduced into the oil and water separation tank is discharged through the effluent inspector.

However, it does not remove the oil initially because it is supplied to the V-type sedimentation tank to remove sludge, but it is supplied to the floating tank together with the oil containing the carouse water. There is a problem that can not be removed completely, the problem is that the odor is generated in the sump in summer season because the wash water is collected up to a certain amount in the sump, and because the wash water is purified only once through the oil-water separation system, There is a problem in that it is not possible to completely remove the contaminants, so it is not possible to recycle it to the wash water, and to pollute the environment by discharging (discharging) the contaminated washing waste water. There is a problem falling.

Utility Model Registration No. 267145 (Waste Water Treatment System) collects waste water into a storage tank, and discharges the waste water collected in the storage tank through an aeration tank supplied with air to settle and remove foreign substances (precipitates) from the settling tank. 2 through the reaction tank in order to purify, install a collecting tank in the first reaction tank and the second reaction tank, respectively, and install a bypass pipe provided with a pump between the first reaction tank and the second reaction tank and each collection tank The waste water of the first and second reactors was repeatedly circulated and purified.

However, since the first and second reaction tanks each equipped with a storage tank, an aeration tank, a sedimentation tank, and a collection tank are installed, there is a problem of occupying a lot of installation area and space, and in the first reactor, waste water without oil is repeatedly removed. Since the purification is carried out while circulating, the purified water once passed through is supplied to the input side of the oil and the foreign materials stacked again, and passes repeatedly between the oil and the foreign materials stacked, so there is a problem that the purification effect cannot be expected. Since the first and second reaction tanks each equipped with an aeration tank, a sedimentation tank, and a collecting tank are fixedly installed, there is a problem that they cannot be moved and used, and there is a problem that the purification rate is lowered by simply filtering (purifying) by using a filter medium.

In order to solve the above problem to some extent, the proposed wastewater purification apparatus using aerobic microorganisms is known, and the representative one of them is, Korean Patent Publication No. 1996-4303, "Waste water by aerobic microorganisms. Purification System ", Patent Registration No. 3302,3" Wastewater Treatment System Using Anaerobic, Aerobic Contact Circulation and Attachment Filtration ", and Patent Registration No. 365314," Aerobic and aerobic properties of microorganisms, nitrogen, phosphorus and Sludge Removal Wastewater Treatment System "is known.

Patent Publication No. 1996-4303 (a wastewater purification device using aerobic microorganisms) purifies wastewater flowing into a sedimentation tank through a septic tank installed in parallel through a flow control tank, and is a sedimentation tank composed of sludge concentration and storage tank. It is to be discharged after disinfection in disinfection tank after sedimentation of foreign substances such as sludge, etc., but it takes up a lot of installation area and space because sedimentation tank, flow control tank, septic tank installed in parallel, and sedimentation tank and disinfection tank are installed in expanded state. There is a problem that odor occurs in the summer season because the waste water is collected in the sedimentation tank to an appropriate amount, and the waste water is passed through the septic tank installed in parallel only once to purify each septic tank. Cleansing while rotating slowly As well as the ability to fall significantly, there is a problem that the purification time consuming.

Patent No.330923 (Wastewater treatment system using anaerobic, aerobic contact circulation and attached filtration) purifies sewage from the sedimentation tank and sedimentation tank to separate foreign matter from incoming wastewater by anaerobic microorganisms ( Circulating water tank (first and second circulating water tank) to make nitrogen), contact aeration tank (first and second contact aeration tank) to decompose organic matter by aerobic microorganisms, and treated water from which organic matter is decomposed Sedimentation tank for sedimentation (sedimentation) of organic matter contained in sedimentation, sedimentation treatment water, which is supplied with oxygen and filled with adhesion media, to activate aerobic microorganisms and to remove residual pollutants. will be.

However, it consists of a sedimentation tank, a circulating water tank (first and second circulation water tanks), a contact aeration tank (first and a second contact aeration tanks), a sedimentation tank, an attachment filtration tank, and a discharge tank, so that the structure is not only complicated, but also the installation area. And there is a problem that takes up a lot of space, and the process is cumbersome and difficult because it performs a number of steps, but the purification efficiency is also lowered because the purification is made by simply passing each process once once.

Patent registration No. 365314 (a wastewater treatment apparatus for removing nitrogen, phosphorus and sludge using anaerobic anaerobic and aerobic properties of logarithmic and endogenous growth stages) is a sedimentation and oil / water separation tank that separates foreign substances such as sand and separates them from raw water (wastewater). Lagoon type aeration tank equipped with an aeration tank for collecting runoff, sand, etc., an anaerobic contact tank for purifying the contact with anaerobic microorganisms, and an anoxic tank for denitrification, and supplying oxygen to the microorganisms and exposing wastewater to aeration. In addition, an anoxic tank for denitrification is provided, a contact aeration tank for removing phosphorus by contacting wastewater with aerobic microorganisms, a precipitation tank in which sludge is precipitated and a purified water (supernatant) is discharged, and a defoaming and discharge tank for filling and discharging the purified water.

However, this structure is not only very complicated, but also takes up a lot of space and space for installation, and has a problem that the purification process is cumbersome and cumbersome due to various steps, and the purification efficiency is low. There is a problem that it takes a lot of time to purify because it is simply moved to the overflow without forced circulation, and the purified water with sludge precipitated in the sedimentation tank is recirculated by supplying it to the Lagyun long-term aeration tank, but this also slows the circulation speed considerably. There is a problem of low efficiency.

The present invention is to provide an improved pre-cleaning system for pre-cleaning wastewater and a wastewater supply and purification apparatus installed in the purification system to solve the above problems.

The present invention is to collect the wash water generated by washing the oil in the oil-water separation tank to separate the oil and to collect the water in the water collection tank, pumping the wash water collected in the water collection tank by using the activated sludge method of using the activated sludge process cultured in the filter To purify the wastewater, and to purify the purified water by the wastewater rapid purification system using the activated sludge method to supply it to the oil / water separation tank or the sump and circulate it.The purified water is recycled when washing the car with a constant water or Its purpose is to provide a car wash and purification system designed to be discharged.

In particular, the washing water pumped from the water collection tank is first purified by a microbial culture filter in which microorganisms are cultured in a filter, and the primary purified water is passed through a conventional filter again to be discharged after the second purification. Its purpose is to provide a wastewater fast-cleaning device.

Another object of the present invention is to collect the pre-washing wastewater generated when washing the car, and to immediately purify, thereby preventing the occurrence of odor in summer, while completely eliminating the phenomenon of insects such as mosquitoes and flies. By greatly simplifying the purification route (step), the installation area and space can be minimized, and the purification time can be shortened to improve the purification efficiency, as well as by repeatedly purifying and continuously circulating the purified water. The present invention provides a purification system for car wash wastewater and a wastewater supply and purification system installed in the purification system to improve the purification efficiency.

Another object of the present invention is to reduce the volume of the purification device to purify the car wash waste water can be easily transported, can be easily installed and used regardless of the place, the microorganism culture filter and ordinary filtration cultured microorganisms The present invention provides a wastewater supply and purification apparatus installed in a purification system in which a double purification is performed by a filter to improve purification efficiency and efficiency.

The above and other objects of the present invention,

The car wash waste water collected in the oil / water separation tank 2 is supplied to the water collection tank 3 through the oil water separation supply pipe 15, and the microbial culture filter 23 and the filtration filter 24 are supplied to the car wash waste water collected in the water collection tank 3. In discharging through the discharge pipe 11 after purifying through,

 The water collection tank 3 and the waste water supply speed purification device 20 are connected to the waste water supply pipe 10 equipped with a pump P2 to pump the precessed waste water collected in the water collection tank 3 to force the waste water supply purification device 20. To be supplied with

The microbial culture filter 23 and the filtration filter housing 22 filled with the microbial culture filter housing 21 for precessing wastewater supplied to the wastewater supply and purification apparatus 20 through the operation of the pump P2. ) To purify by passing through the filtration filter 24 filled in the), the purified water is sucked into the suction pipe (25) to the car wash water through the car wash water supply pipe (12) or discharge pipe (13) provided with the valve (V1) (V2) Recycled or discharged,

One of the oil / water separation tank 2 or the water collection tank 3 and the filtration filter housing 22 of the waste water supply and purification apparatus 20 are connected to the circulation pipe 14 equipped with the valve V3 to provide a valve V1 (V2). ) And to circulate and clean the precessed waste water purified in a state in which the valve (V3) is opened to the wastewater supply and purification device 20 repeatedly,

A multistage level sensor 16 is installed in the collection tank 3 to selectively operate the valves V1, V2, V3, and V4 to discharge the purified water through the car wash water supply pipe 12 or the discharge pipe 13. Or by circulating through the circulation pipe 14 is achieved by the car wash and waste water purification system 1, characterized in that it is included.

Another and other object of the present invention,

In the pretreated car wash waste water is passed through the microbial culture filter 23 and the filtration filter 24 to be purified and then discharged through the discharge pipe (11),

In the lower part of the microbial culture filter housing 21, a wastewater supply pipe 10 equipped with a pump P2 is installed, a normal microbial culture filter 23 is filled in the inner middle portion, and an air ejector 26 is provided on the upper side. With that installed,

At the lower end of the filtration filter housing 22 to which the wastewater purified by the microorganism culture filter 23 is supplied, a circulation pipe 14 equipped with a valve V3 is installed, and a normal filtration filter 24 is provided therein. Installed on the inner center line of the filtration filter 24, the suction pipe 25-1 is inserted and loaded with a myriad of through holes, and the suction pipe 25 is installed to communicate with the normal discharge pipe 11;

The discharge pipe (11) communicating with the suction pipe (25) is connected to the car wash water supply pipe (12) and the discharge pipe (13) equipped with valves (V1) (V2) in parallel,

The microbial culture filter housing 21 and the filtration filter housing 22 is achieved by the waste water supply telephone apparatus 20, characterized in that it is installed in the interior of the cabinet 28 equipped with an opening and closing door.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 4 show a specific embodiment of the car wash and waste water purification system 1 and the waste water supply telephone apparatus 20 according to the present invention, FIGS. 1 and 2 are car wash and waste water purification systems according to the present invention. 1) is a system diagram and a block diagram, and FIGS. 3 and 4 are cross-sectional views showing different embodiments of the waste water supply telephone apparatus 20 installed in the car wash and waste water purification system 1.

Car wash and waste water purification system (1) according to the present invention was configured as follows.

The oil-water separation tank (2) and the water collection tank (3) are provided in a lazy manner, and the oil-water separation tank (2) is provided with a car wash and waste water inflow pipe (5) so as to collect the car wash and waste water generated when the car wash is carried out. In the partition wall installed between (2) and the sump (3), a conventional oil-water separation supply pipe (15) was installed so that the oil-washed wastewater moved to the sump (3), and the sump (3) had a sensor (S1). (S2) (S3) by installing a multi-stage level sensor (16) with different heights to detect (check) the flow rate of the wastewater being collected and check valves (V1) (V2) (V3) and pumps (P2) described later. It is possible to control the operation of.

In addition, the new water tank (4) was provided separately and the water supply pipe (6) equipped with a pump (P1) was installed so that the constant (filled) received in the fresh water tank (4) can be supplied to the wash water for use.

In the sump (3), a wastewater supply pipe (10) equipped with a pump (P2) is installed, but the wastewater supply pipe (10) is connected to the microbial culture filter housing (21) of the wastewater rapid purification device (20), which will be described in detail later. In the oil / water separation tank 2, a circulation pipe 14 equipped with a valve V3 is installed, but the circulation pipe 14 is connected to the filtration filter housing 22 of the waste water supply and purification apparatus 20 described in detail. The air ejector 26 installed on the microbial culture filter housing 21 of the rapid purifying device 20 is connected in communication with the wastewater supply pipe 10 on the preceding side of the pump P2 through the air supply pipe 27. To the discharge pipe 11 of the wastewater supply and speed purification apparatus 20, the car wash water supply pipes 12 and the discharge pipes 13 equipped with valves V1 and V2 were connected in parallel to each other.

The waste water supply and purification apparatus 2 installed on the car wash and waste water purification system 1 was formed (constructed) as illustrated in FIG. 3 or 4.

In the wastewater supply and purification apparatus 2 illustrated in FIG. 3, a wastewater supply pipe 10 is installed at a lower end of the microbial culture filter housing 21, and an air ejector 26 is installed at an upper side of the wastewater supply purifying device 21. The microbial culture filter 23 is filled with a microorganism cultured at an inner middle portion of the microbial culture filter housing 21, and the upper surface of the microbial culture filter housing 21 is formed on the inner center line of the microbial culture filter housing 21. ) Was buried.

On the bottom of the filtration filter housing 22 embedded in the microorganism culture filter 23, a circulation pipe 14 equipped with a valve V3 is installed to communicate with each other, and the suction hole (in the inner center line of the filtration filter housing 22) is disposed. 25-1) is provided with a suction tube 25 through the myriad of holes, the filter filter 24 is coupled to the outside of the suction pipe 25, the discharge pipe 11 is communicated to the end of the suction pipe 25 in the valve The car wash water supply pipe 12 and the discharge pipe 13 equipped with (V1) and (V2), respectively, were installed in parallel communication.

In particular, the microbial culture filter housing 21 in which the filter filter housing 22 is embedded is mounted (installed) inside the cabinet 28 provided with an opening / closing door (not specifically shown) to form a simple appearance.

The wastewater supply and purification apparatus 2 illustrated in FIG. 4 includes a microbial culture filter housing 21 filled with a microbial culture filter 23 and a suction pipe 25 in which the filtration filter 24 is coupled to the outside. The filtration filter housing 22 is installed side by side in the cabinet 28, and the microbial culture filter housing 21 and the filtration filter housing 22 have an upper portion in which a pressure pipe 31 and a valve V4 are installed. 30), and the rest was formed in the same manner as in the embodiment of FIG.

Hereinafter, the operation relationship of the car wash waste water purification system (1) provided with the waste water supply and purification apparatus (2) according to the present invention.

The car wash and wastewater purification system 1 according to the present invention is operated in a manner as illustrated in FIG. 2.

The car wash waste water generated when the car wash is carried out is introduced into the oil / water separation tank 2 through the car wash waste water inflow pipe 5, and the car wash waste water introduced into the oil / water separation tank 2 is separated from the oil water because the oil component floats up to the upper side of the water. The oil located on the upper side by the supply pipe 15 does not leak, and only the lower washing waste water is collected and moved to the collection tank 3, and the car wash waste water collected in the collection tank 3 is installed in the collection tank 3. When the sensor 16 is sensed (sensed) by the sensor S1 located on the lowermost side of the sensor 16, the pump P2 is operated to purify the car wash waste water.

When the pump P2 is operated, the car wash wastewater collected in the water collection tank 3 is introduced into the lower side of the microbial culture filter housing 21 of the wastewater rapid purification apparatus 20 through the wastewater supply pipe 10.

When the wastewater supply and purification apparatus 20 is formed (constructed) as illustrated in FIG. 3, the pretreated wastewater flowing into the lower side of the microbial culture filter housing 21 is activated while passing through the microbial culture filter 23. By contacting the microorganisms cultured in the microbial culture filter 23 to use the method, foreign substances such as sludge are removed and purified first, and the primary purified washing waste water discharged to the upper side of the microbial culture filter 23 is opened. Through the upper side of the filtered filter housing 22 is introduced into the filtration filter housing 22, the primary purification washing wastewater flowing into the filtration filter housing 22 passes through the filtration filter 24, After being removed and the secondary purification is performed is sucked into the suction pipe 25 through the suction hole (25-1), the purified water sucked into the suction pipe 25 is supplied to the car wash water supply pipe 12 through the discharge pipe (11) When we wash car Through a car or the use or discharge tube 13 is discharged in the nature.

On the other hand, when the wastewater supply and purification apparatus 20 is formed (constructed) as illustrated in FIG. 4, the precession wastewater flowing into the lower side of the microbial culture filter housing 21 is activated while passing through the microbial culture filter 23. In order to use the sludge method, the microorganism cultured in contact with the microorganism cultivated in the filter 23, foreign substances such as sludge is removed and purified first, and the primary purified washing discharged to the upper side through the microbial culture filter 23 Waste water is introduced into the filtration filter housing 22 through the upper side through the distribution pipe 30 installed on the upper side in the state in which the valve V4 is opened, and the primary purification washing introduced into the filtration filter housing 22. The waste water is sucked into the suction pipe 25 through the suction hole 25-1 after the secondary purification is performed while the waste water passes through the filtration filter 24, and the purified water sucked into the suction pipe 25 is discharge pipe 11 Car wash While being supplied to the air supply pipe 12, it is used again when washing the car or discharged to nature through the discharge pipe 13.

As described above, when the washing waste water is purified by passing through the microbial culture filter 23 of the microbial culture filter housing 21 and the filtration filter 24 of the filtration filter housing 22, the amount of car wash waste water collected in the collection tank 3 When sensed (detected) by the sensor S3 located at the top of the multi-level sensor 16, the multi-level sensor 16 provides this information to the main control system (not specifically shown) to provide information on each valve ( In V1) (V2) (V3), open only valve (V2) to discharge the purified water through the discharge pipe (13), or open the valve (V1) and recycle it to the wash water when the car is running. .

On the other hand, the car wash waste water collected in the water collecting tank 3 is not sensed (detected) by the sensor S3 located at the top of the multistage level sensor 16, but is located in the middle of the sensor S2 or the lower sensor S1. ), The main control system (not specifically shown) opens only the valve V3 in each of the valves V1, V2, and V3 according to the information provided, thereby circulating the primary purification wastewater. It is supplied again to the oil / water separation tank 2 or the water collection tank (3: the drawings supplied to the water collection tank is not shown in detail), so that the water supply and purification system 20 is repeatedly and continuously circulated, and thus, the primary If the purified waste water is circulated repeatedly and continuously in the wastewater rapid purifying apparatus 20, the circulated water gradually becomes a good purification state.

In particular, the waste water supply purification apparatus 2 installed in the car wash and waste water purification system 1 according to the present invention is simple in structure, small in volume, and light in weight, and thus can be easily transported, regardless of place or place. It can be installed and used anywhere.

Although the invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

In the pre-cleaning system for car wash wastewater according to the present invention and the wastewater speed purification device installed in the purifying system, the wash wash water generated by washing the car is collected in an oil-water separation tank to separate oil into a sump tank, and the wash water collected in the sump tank. By pumping the microorganisms to be purified by passing through the wastewater rapid purification device using the activated sludge method, which is cultured in the filter, the purified water purified by the wastewater rapid purification device using the activated sludge method is supplied to the oil / water separation tank or the circulation tank for circulation. Purification can be performed repeatedly while the purified water can be recycled or discharged when washing the water with a constant water, and the rinsing water generated during the washing is collected and immediately purified to collect odors in summer. At the same time, it prevents the habitat of insects such as mosquitoes and flies. Extremely simplified furnace (stage) and simple structure of waste water supply and purification system, light weight and simplicity make it easy to transport, install and project regardless of installation area, and shorten the purification time to improve purification efficiency. In addition, the purification efficiency can be improved by repeatedly purifying the purified water continuously.

1 is a system diagram showing a purification system for car wash wastewater according to the present invention.

Figure 2 is a block diagram according to the schematic diagram of the system for purification of car wash wastewater in accordance with the present invention. Figure 3 is an enlarged cross-sectional view showing an extract of the wastewater rapid purification apparatus installed in the purification system of the precessed wastewater in accordance with the present invention.

 Figure 4 is a cross-sectional view showing another embodiment of the waste water supply speed purification apparatus installed in the car wash waste water purification system according to the present invention.

              Explanation of symbols on main parts of drawing

1: car wash and wastewater purification system 2: oil and water separation tank 3: water collection tank

4: new water tank 5: car wash and waste water inlet pipe 6: water supply pipe

10: wastewater supply pipe 11: purified water discharge pipe 12: car wash water supply pipe

13: discharge pipe 15: oil / water separation supply pipe 16: multi-level sensor

20: wastewater purification system 21: microbial culture filter housing 22: filter filter housing

23: microbial culture filter 24: filtration filter 25: suction pipe

26: air ejector 27: air supply pipe 28: cabinet

Claims (4)

The car wash waste water collected in the oil / water separation tank 2 is supplied to the water collection tank 3 through the oil water separation supply pipe 15, and the microbial culture filter 23 and the filtration filter 24 are supplied to the car wash waste water collected in the water collection tank 3. In discharging through the discharge pipe 11 after purifying through,  The water collection tank 3 and the waste water supply speed purification device 20 are connected to the waste water supply pipe 10 equipped with a pump P2 to pump the precessed waste water collected in the water collection tank 3 to force the waste water supply purification device 20. To be supplied with The microbial culture filter 23 and the filtration filter housing 22 filled with the microbial culture filter housing 21 for precessing wastewater supplied to the wastewater supply and purification apparatus 20 through the operation of the pump P2. ) To purify by passing through the filtration filter 24 filled in the), the purified water is sucked into the suction pipe (25) to the car wash water through the car wash water supply pipe (12) or discharge pipe (13) provided with the valve (V1) (V2) Recycled or discharged, One of the oil / water separation tank 2 or the water collection tank 3 and the filtration filter housing 22 of the waste water supply and purification apparatus 20 are connected to the circulation pipe 14 equipped with the valve V3 to provide a valve V1 (V2). ) And to circulate and clean the precessed waste water purified in a state in which the valve (V3) is opened to the wastewater supply and purification device 20 repeatedly, A multistage level sensor 16 is installed in the collection tank 3 to selectively operate the valves V1, V2, V3, and V4 to discharge the purified water through the car wash water supply pipe 12 or the discharge pipe 13. Or circulating through the circulation pipe (14). In the pretreated car wash waste water is passed through the microbial culture filter 23 and the filtration filter 24 to be purified and then discharged through the discharge pipe (11), In the lower part of the microbial culture filter housing 21, a wastewater supply pipe 10 equipped with a pump P2 is installed, a normal microbial culture filter 23 is filled in the inner middle portion, and an air ejector 26 is provided on the upper side. With that installed, At the lower end of the filtration filter housing 22 to which the wastewater purified by the microorganism culture filter 23 is supplied, a circulation pipe 14 equipped with a valve V3 is installed, and a normal filtration filter 24 is provided therein. Installed on the inner center line of the filtration filter 24, the suction pipe 25-1 is inserted and loaded with a myriad of through holes, and the suction pipe 25 is installed to communicate with the normal discharge pipe 11; The discharge pipe 11 communicating with the suction pipe 25 is connected to the car wash water supply pipe 12 and the discharge pipe 13 equipped with valves V1 and V2 in parallel, And the microbial culture filter housing (21) and the filter filter housing (22) installed inside the cabinet (28) equipped with an opening / closing door. The microorganism culture filter housing 21 and the filtration filter housing 22 installed in the cabinet 28, Embedding the filter filter housing 22 on the inner center line of the microbial culture filter 23 in which the microorganisms filled in the middle of the microorganism culture filter housing 21 are cultured; The filtration filter housing 22 has an upper surface formed in an open type, and on the inner center line, a suction pipe 25 having a filtration filter 24 coupled to the outside is provided. Device. The microorganism culture filter housing 21 and the filtration filter housing 22 installed in the cabinet 28, The microorganism culture filter housing 21 filled with the microorganism culture filter 23 and the filtration filter housing 22 having the suction pipe 25 having the filtration filter 24 coupled to the outside are mounted inside the cabinet 28. Installed side by side, The microbial culture filter housing 21 and the filtration filter housing 22 are connected to the upper portion through a distribution pipe 30 equipped with a pressure gauge 31 and a valve V4. .