KR20120017549A

KR20120017549A - The treatment system for waste water of car wash

Info

Publication number: KR20120017549A
Application number: KR1020100080204A
Authority: KR
Inventors: 금용섭; 금충섭
Original assignee: 금용섭; 금충섭
Priority date: 2010-08-19
Filing date: 2010-08-19
Publication date: 2012-02-29

Abstract

PURPOSE: A system for treating carwash wastewater is provided to reduce the pollutant loading amount of carwash wastewater introduced into an oxidizing bath by continuously eliminating precipitated materials using a micro-filter. CONSTITUTION: A system for treating carwash wastewater includes a precipitating bath(200), an oxidizing bath(300), a treated water bath(400), and a carwash wastewater treating unit(500). A filtering container(210) is attached on the upper side of the precipitating bath, and an air lift(220) is installed at the lower side of the precipitating bath. An oil skimmer(320) is installed on the upper side of the oxidizing bath, and a plurality of micro-bubble spraying nozzles(310) is installed at the lower side of the oxidizing bath. A sand filter(410) is installed at the inlet of the treated water bath. The carwash wastewater treating unit is equipped with an ozone generator(510), a micro-bubble generator(520), a sucking pump(530), an air compressor(540), and a controlling panel(550).

Description

The wash system for waste water of car wash

The present invention relates to a car wash waste water treatment system, and more particularly, a system for treating car wash waste water generated when washing a car comprises only a sedimentation tank, an oxidizing tank, and a treatment water tank, and is generated in each tank at the top of each tank. By attaching a device that processes sediment, oil, oxidation reactants, and suspended solids on its own, it removes the sedimentation tank included in the existing treatment system and lengthens the cleaning cycle to remove the sediment deposited in the sedimentation tank.

When the car wash water generated when washing the car is introduced into the car wash water treatment system of the present invention built in the basement of the car wash, heavy contaminants such as sand, metal chips and tire powder are precipitated in the sedimentation tank, and dissolved chemicals and suspended solids. , Oil, etc. flow from the sedimentation tank to the oxidation tank of the latter stage together with the supernatant.

Airlift is installed on the lower part of the immersion tank, and the micro filter is installed on the upper part of the immersion tank. The sediment deposited on the immersion tank is lifted into the micro filter by the air lift, and the car wash wastewater from which the sediment is filtered out from the micro filter is returned to the immersion paper. Inflow.

The microbubble nozzle is installed at the lower part of the oxidizing tank, and when microbubbles prepared by mixing gas ozone and precessed water in the microbubble generator are injected into the oxidizing tank through the microbubble nozzle, the microbubble ozone is removed from the car wash water in the oxidizing bath. By oxidizing dissolved chemicals to reduce COD in car wash water and oxidizing reactants, oils and suspended solids in car wash water on the surface of the oxidant tank. After being separated from the wastewater, the supernatant water of the pre-washed wastewater, which is removed by flowing into the fine filter installed in the upper part of the sedimentation tank and purified in the oxidizing tank, flows into the treatment tank of the rear stage.

The sand filter is installed at the inlet of the treatment tank so that the pre-washed wastewater is stored in the treatment tank after the final fine particles are filtered out from the filter layer of the sand filter and reused as the wash water. When the filter layer is clogged with the collected fine material, compressed air is injected to backwash the filter layer to clean the filter layer. An air lift is mounted on the filter layer to transfer the fine material filtered on the filter layer to the top of the sand filter. It is sent to the fine material storage tank installed in the upper sand filter and the fine material collected in the fine water storage tank flows into the fine filter installed in the upper part of the immersion tank is removed.

Meanwhile, the sedimentation tank, the oxidizing tank, and the treatment tank are connected to an integrated underground structure, and a car wash wastewater treatment unit is installed on the upper part of the underground structure, and the car wash wastewater treatment unit includes a suction pump for sucking the treated water in the treatment tank. The ozone generator that generates ozone, the microbubble generator that generates the fine bubbles by mixing the ozone and suction water, and the air compressor for supplying compressed air to the ozone generator, air lift, compressed air supply nozzle, and the like It is composed of a control panel that can supply and control the operation.

With the recent rapid increase in the number of cars, the number of car washes generated by car washing is increasing rapidly. The amount of car washes generated by car washing is also increasing rapidly. Car wash water treatment technology is also continuously developed.

Initial car wash water treatment technology is to put the car wash water collection tank of civil structure in the basement of car wash, collect car wash waste water, pull out car wash waste water with pump and enter the car wash water treatment device installed on the ground, and then settle the sediment in the sedimentation tank first. Later, chemicals were reacted in the reaction tank by chemicals in the reaction tank, followed by flocculation and sedimentation of the chemical reactants using flocculants in the sedimentation tank, and the supernatant was collected in the treatment tank and discharged. The method has the advantage that the car wash water treatment device is easy to manufacture with iron products and is inexpensive, but the car wash water treatment device is installed on the ground, and the required area is large, and the chemical reaction is caused by the chemicals. It is difficult to reuse the treated water and the amount of chemical reactants It had a disadvantage that the amount of saliva objects and deposits increased.

On the other hand, in recent years, since many car washes are installed at gas stations, the car wash waste water treatment system is installed as an underground structure at the lower part of the site where the car washes are installed. Therefore, when cleaning car wash waste water with chemicals, a large amount of chemical reactants and sediments are used. It is difficult to discharge the effluent out of the car wash water treatment system. Therefore, a technology for oxidizing and removing dissolved chemicals in car wash water by using an oxidant instead of the chemical treatment method has been developed. Compared with the need for continuous chemical input and supplying only ozone from the ozone generator using electricity, it is convenient to clean the car wash water.However, in order to increase the oxidizing power, when the ozone is injected into the microbubble, the oxidizing power is increased, Due to car wash It may be a lot of presence oxidation reaction product, suspended solids, oil and so on to the injury to the surface with micropores Po and the so can interfere with aggregation and precipitation in the oxidation tank is a separate settling tank installation is inevitable drawback in the trailing oxidation tank

In addition, there is a disadvantage that the oxidation reaction by ozone is lighter than the oxidation reaction by chemicals, so the precipitation is not good and the length of the settling tank is long, and the amount of fine oxidation reactant is contained in the treated water, thereby decreasing the reuse rate of the treated water.

The present invention is to solve and solve the problems caused by the conventional car wash water treatment system as described above,

An object of the present invention is to install the airlift in the lower part of the immersion tank and to install the fine filter in the upper part of the immersion tank so that the car wash waste water can be treated only with the immersion tank, the oxidizing tank, and the treated water tank. After the salvage, it is filtered into the fine filter to continuously remove the sediment, thereby reducing the pollutant load in the car wash water entering the oxidizing tank, and oxidizing the chemicals dissolved in the car wash water by using ozone microbubble in the oxidizing bath as an oxidant. While removing the suspended solids from the oil skimmer, the oil skimmer installed in the upper part of the oxidizer tank is separated from the washed waste water and sent to the micro filter on the top of the sedimentation tank. Removed and purified car wash water flows into the treatment tank of the next stage, and the settling tank of the oxidation stage is installed. The car wash water, which is purified directly from the oxidizing tank, is stored in the treatment tank.

On the other hand, in the treatment tank, a cylindrical sand filter is installed at the inlet of the treatment tank to finally filter out fine materials in the treatment water to increase the reuse rate of the treatment water, and a compressed air supply nozzle is installed at the bottom of the sand filter to provide compressed air. Intermittently wash the sand inside the filter layer with the injection force to prevent clogging of the filter layer, install an air lift on the filter layer to lift the fine material filtered through the filter layer, collect it in the fine material storage tank, and send it to the fine filter installed in the upper part of the tank And an air compressor for supplying compressed air to a suction pump, an ozone generator and an air lift, a compressed air supply nozzle, and an operation panel for operating and supplying electricity for operating the machines. With the processor, the above-mentioned sedimentation tank and accessories, oxidation tank and accessories, Provide a water tank and re-washed with additional equipment capable Wastewater treatment is a batch operation Comprehensive Organic wash waste water treatment system.

According to the car wash and wastewater treatment system of the present invention for achieving the above object, the fine filter is installed on the top and the immersion tank of the civil engineering structure is installed airlift in the lower; An oxidation tank of the civil structure having an oil skimmer installed on the upper portion and a plurality of fine bubble nozzles installed on the lower portion thereof; A treatment tank of a civil structure having a sand filter installed at an inlet; A car wash wastewater processor having a suction pump, a microbubble generator, an air compressor, and an ozone generator, and an operation panel for supplying electricity to the machines and controlling operation thereof; Provides car wash water treatment system, including

The civil engineering structure consists of underground civil engineering structures integrated in order of sedimentation tank, oxidation tank, and treatment tank, and after washing car is introduced, the car wash waste water of the structure is allowed to flow through each tank to natural oil during the purification process. Ensure that the inlet height is configured to be low in stages.

In the sand filter, a plurality of compressed air supply nozzles are installed at the lower part of the filter layer, and when the filter layer is blocked, the compressed air supply nozzle is sprayed with compressed air to clean the filter layer, and an air lift is installed on the filter layer to filter the filter layer. The fine material was collected and collected into a fine material storage tank installed at the top of the sand filter, and then discharged and removed by a fine filter installed at the top of the sedimentation tank.

According to the car wash wastewater treatment system according to the present invention, after removing the sediment in the sedimentation tank with an air lift, the filter was continuously removed with a micro filter to reduce the sediment load in the sedimentation tank, thereby reducing the size of the sedimentation tank, and the car wash waste water flowing into the oxidizing tank. There is an effect of reducing the pollution load.

In addition, the present invention is to increase the oxidizing power by using ozone as an oxidant in the oxidizing tank, after floating the suspended substances, oxidation reactants, oils, etc. contained in the car wash water with fine bubbles, and then removed with an oil skimmer to separate the rear end of the oxidizing tank There is an economic effect that does not require a sedimentation tank.

In addition, the present invention has the effect of increasing the recycling rate of the treated water by installing a sand filter capable of backwashing at the inlet of the treatment tank to purify the treated water.

In addition, the present invention also has the economic effect of reducing the construction cost by reducing the structure of each group by eliminating the contaminants generated in each treatment tank from time to time by itself to eliminate the settling length of each set because of the suspended matter settled.

In addition, the present invention has a convenient operation by removing the contaminants generated in each treatment tank from time to time to extend the cleaning cycle for removing the contaminants precipitated in each tank.

Hereinafter, with reference to the drawings will be described in detail. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.

1 is a configuration of the car wash wastewater treatment system according to the present invention,

The car wash waste water generated during car washing is introduced into the sedimentation tank 200 through the waste water collection pipe 100 of the car wash, and the introduced car wash waste water is contained in the car wash waste water in the sedimentation tank 200, sand, tire powder, etc. Heavy material such as sediment is removed by the sediment 201 and the supernatant is introduced into the oxidation tank 300 of the rear end.

The filter tank 210 is installed on the upper part of the immersion tank 200, and the micro filter 211 having a pore of 150 to 300 mesh is installed inside the filter tank 210, and the micro filter 211 is often a micro filter ( A handle 212 is attached to take out 211) for cleaning. When the air lift 220 is installed in the lower part of the immersion tank 200, and when compressed air is supplied to the air lift 220, it is supplied by the compressed air supply port 227 attached to the connection outer cylinder 223 of the air lift 220. As the compressed air soared above the discharge pipe 222, the sediment 201 below the immersion tank 200 is lifted into the inlet pipe 221 together with the car wash wastewater into the air lift 220, and the discharge pipe 222. ) Discharged to the outside, the discharged car wash water and sediment 201 is introduced into the filter tank 210, and then the sediment 201 is filtered from the fine filter 211, the car wash waste water is returned to the sedimentation tank 200 When the fine filter 211 is filtered, the sediment 201 is removed from the outside of the car wash when cleaning the fine filter 211.

The car wash waste water from which the sediment 201 is removed from the sedimentation tank 200 is dissolved chemicals in the car wash waste water by the microbubbles 311 containing ozone generated from the microbubble nozzle 310 in the oxidizing tank 300. Oxidation is removed by the oxidation reaction, suspended matter and oil remaining in the pre-washing water, the oxidizing reactant is floated on the water surface by the micro-bubble 311 and then washed with the pre-washing water in the oil skimmer 320 installed on the oxidizing tank 300 After being separated and collected, the sediment filtered out from the fine filter 211 after being discharged to the filter barrel 210 installed on the sedimentation tank 200 through the floating water outlet 325 installed on the outer side of the oil skimmer 320 and the outer cylinder 321 ( 201), a plurality of micro-bubble nozzles 310 for supplying the micro-bubble 311 to the oxidizing tank 300 is provided below the oxidizing tank (300).

Car wash waste water from which most contaminants have been removed from the sedimentation tank 200 and the oxidizing tank 300 is introduced into the treatment tank 400 only through the oxidizing tank outlet 301 and the sand filter installed at the treatment tank inlet 401. After the last remaining fine material is removed by the sand 412 in the filter layer 411 installed in the 410 is stored as treated water in the treatment tank 400, 70 to 80% of the treated water is the car wash water Is reused.

Meanwhile, a plurality of compressed air supply nozzles are formed under the filter layer 411 in the sand filter 410 to prevent the filter layer 411 from clogging due to the accumulation of fine material filtered from the pre-cleaned wastewater between the sand 412 in the filter layer 411. 413 is installed and intermittently the suspended solids accumulated in the sand 412 layer is supplied to the filter layer 411 from the compressed air supply nozzle 413 so that the sand 412 layer is not blocked. The filter layer 411 is pushed up to clean the filter layer 411.

In addition, a sand air lift 420 that operates on the same principle as the air lift 220 installed in the sedimentation tank 200 is installed above the filter layer 411. When the sand air lift 420 operates, The filtered fine material is lifted and sent to the fine material storage tank 430 installed on the sand filter 410, and the fine material collected in the fine material storage tank 430 is passed through the fine material outlet 431 installed under the fine material storage tank 430. After flowing into the filter cylinder 210 installed on the upper part of the immersion tank 200, the suspended solids are finally removed from the fine filter 211.

Above the immersion tank 200, the oxidation tank 300, the treatment water tank 400 is installed in the basement as an integrated rectangular civil structure, the car wash waste water treatment unit 500 is installed on the civil structure.

In the pre-washing water treatment 500, the ozone generator 510 for generating ozone and the suction pump 530 for sucking the treated water and supplying the treated water to the microbubble generator 520 are mixed with the suctioned water and ozone. An air compressor for supplying compressed air to the microbubble generator 520 and the air lift 220, the sand air lift 420, the compressed air supply nozzle 413, and the ozone generator 510 to make the bubble (311) ( 540 and an operation panel 550 for supplying electricity to the machines and manipulating operation are integrally constructed.

2 is a structural view of the filter cylinder according to the present invention,

The filter cylinder 210 is manufactured in the form of a pipe and has a support 213 on the outside of the filter cylinder 210 so as to be fixed to the wall of the immersion tank 200, and the pedestal 214 is provided inside the filter cylinder 210. The cylindrical fine filter 211 can be mounted. Since the fine filter 211 should be cleaned intermittently, a handle 212 for removing the fine filter 211 is attached to the upper portion of the fine filter 211.

The fine filter 211 may be one having a pore of about 150 to 300 mesh, and may be used as a single-use fiber filter or an iron filter for multiple use.

3 is a structural diagram of an airlift according to the present invention;

The air lift 220 forms a connection outer cylinder 223 at the connection portion of the inlet pipe 221 and the discharge pipe 222 in the form of a long pipe, and inclined the outer surface of the inlet pipe 221 upper portion 224 and discharges the outflow pipe ( 222) After the lower surface 225 is processed obliquely and the air gap 226 is placed at the connection point between the inlet pipe 221 upper part 224 and the outlet pipe 222 lower part 225, and the connection outer tube 223 is hermetically connected. When the compressed air supplied to the compressed air supply port 227 installed in the connection outer cylinder 223 rises through the discharge pipe 222, the inside of the inlet pipe 221 is made negative pressure and the car wash waste water at the bottom of the inlet pipe 221; After the immersion material 201 rises up inside the inflow pipe 221, it is ejected to the filter cylinder 211 on the upper part of the immersion tank 200 through the discharge pipe 222 by the ejection phenomenon of the connection outer cylinder 223. do.

4 is a structural diagram of an oil skimmer according to the present invention;

Oil skimmer 320 is a cylindrical structure consisting of an outer cylinder 321 and the inner cylinder 322, the outer cylinder 321, the mounting table 323 is installed to be attached to the wall of the oxidation tank 300, the inner cylinder 322 ) Is welded to the outer cylinder 321 so that the water level is slightly higher than the outer cylinder 321. A plurality of teeth 324 are formed on the inner cylinder 322 and various floating substances floated on the surface of the oxidation tank 300 by the microbubbles 311 injected from the microbubble nozzle 310 under the oxidation tank 300 are formed. When the oil skimmer 320 is introduced into the inner cylinder 322, the floating floating material flows into the outer cylinder 321 by overflowing the inner cylinder 322 with the floating force, and the level of the outer cylinder 321 is the tooth 323 of the inner cylinder 322. When the water level is lower than the lower level, the precession wastewater of the outer cylinder 321 flows back into the inner cylinder 322, at which time the suspended solids are filtered by the teeth 324 of the inner cylinder 322, and then the suspended matter outlet 325 installed in the outer cylinder 321. After the flow through the filter tank 211 of the upper part of the immersion tank 200 is processed.

5 is a structural diagram of a microbubble generator according to the present invention;

The microbubble generator 520 has a structure in which the venturi tube 521 and the bubble generator 523 equipped with the collision pin 522 are coupled to the treated water supply port 524 attached to the inlet of the venturi tube 521. The treated water sucked into the suction pump 530 from the water tank 400 is supplied, and the ozone in the gas state supplied from the ozone generator 510 to the ozone supply port 525 coupled diagonally with the treated water supply port 534 is When supplied, the treated water and ozone are strongly introduced into the bubble generator 523 while the treated water and ozone are mixed in the venturi tube 521 according to the Bernoulli principle, and the introduced treated water and ozone have a plurality of collision pins 522 installed inside the bubble generator 523. As the ozone air bubbles are broken in the treated water while continuously colliding with each other, it is changed into numerous ozone bubbles and is finally discharged from the bubble generator 523 to the fine bubbles 311.

1 is a block diagram of a car wash wastewater treatment system according to the present invention.

2 is a structural view showing the filter cylinder according to the present invention.

3 is an airlift structure diagram according to the present invention.

4 is an oil skimmer structure diagram according to the present invention.

5 is a structural diagram of a microbubble generator according to the present invention.

Explanation of symbols on the main parts of the drawings

100: collecting pipe 200: tide tank

201: sediment 210: filter barrel

211: fine filter 212: handle

213: support 214: support

220: air lift 221: inlet pipe

222: discharge pipe 223: connection outer cylinder

224: top 225: bottom

226: void 227: compressed air connector

300: oxidation tank 301: oxidation tank outlet

310: fine bubble nozzle 311: fine bubble

320: oil skimmer 321: outer cylinder

322: inner cylinder 323: attachment

324: tooth 325: float outlet:

400: treatment tank 401: treatment tank inlet

410: sand filter 411: filter layer

412: sand 413: compressed air supply nozzle

420: sand airlift 430: fine reservoir

431: fines outlet 500: car wash wastewater treatment

510: ozone generator 520: fine bubble generator

521: Venturi tube 522: collision pin

523: bubble generator 524: treated water supply port

525: ozone supply port 530: suction pump

540: air compressor 550: operation panel

Claims

In car wash wastewater treatment system,

A sedimentation tank attached to the upper part of the filter tank and an air lift installed on the lower part thereof;

An oil bath having an oil skimmer installed at an upper portion thereof and a plurality of fine bubble spray nozzles installed at a lower portion thereof;

A treatment tank having a sand filter installed at an inlet;

A car wash and wastewater treatment unit having an ozone generator, a microbubble generator, a suction pump, and an air compressor, and a control panel capable of supplying electricity and operating to the machine; end

Car wash and wastewater treatment system, characterized in that combined operation

The method of claim 1,

Car wash wastewater treatment system characterized in that the sedimentation tank, the oxidation tank, the treatment water tank is an integrated structure, and even if the car wash wastewater treatment system is a separate structure, it is operated in combination.

The method of claim 1,

Car wash wastewater treatment system, characterized in that the sedimentation tank, oxidation tank, treatment tank, car wash wastewater treatment unit is operated in combination as an integral structure

The method of claim 1,

The filter barrel is fixed to the immersion tank having a fixed pedestal on the outside,

It has a pedestal inside to fix the fine filter,

The fine filter consists of a material with a pore of 150 to 300 mesh,

Car wash and wastewater treatment system characterized in that the handle on the top of the fine filter

The method of claim 1,

The air lift consists of two pipes,

Connection outer cylinder is installed at the connection part of the pipe, compressed air supply port is diagonally joined to the connection outer cylinder,

Car wash and wastewater treatment system characterized in that the inlet pipe upper part is inclined outer surface and the discharge pipe lower part is inclined inner surface and the two pipes are airtightly bonded to the connecting outer cylinder with a gap.

The method of claim 1,

The sand filter is a pre-washing wastewater treatment system, characterized in that a plurality of compressed air injection nozzles are installed below the filter layer and the air lift is installed on the filter layer.

The method of claim 4,

The fine filter is car wash waste water treatment system characterized in that to process the generated sediment of the settling tank, the floating suspended matter of the oil skimmer, the generated fine material of the sand filter at the same time