CN217628031U

CN217628031U - Car washing wastewater treatment system

Info

Publication number: CN217628031U
Application number: CN202221656978.XU
Authority: CN
Inventors: 谢燕蔓
Original assignee: Shenzhen Rachel Carson Environmental Technology Co ltd
Current assignee: Shenzhen Rachel Carson Environmental Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-21
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a carwash effluent disposal system, including the oil removal collecting pit, with the first coagulating basin of oil removal collecting pit intercommunication, with the first flocculation basin of first coagulating basin intercommunication, with the sediment air supporting system of first flocculation basin intercommunication, the oil removal collecting pit is used for getting rid of the grease, sediment air supporting system includes the sedimentation tank and is located the air system that dissolves in the sedimentation tank, it is used for getting rid of the suspended solid in the waste water to dissolve the air system, the bottom intercommunication sludge impoundment of sedimentation tank, the upper portion intercommunication biochemical system of sedimentation tank, biochemical system is used for getting rid of the organic matter in the waste water. This carwash effluent disposal system can high-efficiently get rid of pollution factors such as silt, grease, COD in the waste water, improves sewage equipment treatment effeciency, and equipment occupation space is little, reduces waste water treatment equipment and takes up an area of and the space quantity, reduces the cost of renting a house.

Description

Car washing wastewater treatment system

Technical Field

The utility model relates to a waste water treatment technical field, more specifically relate to a carwash effluent disposal system.

Background

With the development of economy in China, automobiles almost become necessary tools for family life of urban residents, the use of a large number of automobiles inevitably leads to the rapid development of the automobile washing industry, a large amount of automobile washing water is consumed, and the problem of water pollution is greatly aggravated for urban environmental protection.

The main pollutants in the car washing wastewater are oil pollutants, silt and detergents. In particular, the car washing wastewater contains a great amount of pollution components such as oil, organic matters, surfactants and the like which are difficult to degrade, and if the car washing wastewater is directly discharged without being treated, the car washing wastewater will cause serious pollution to the water environment or cause the blockage of a sewage pipe network. Not only affects the cleanness and the greening of the city, but also affects the living environment of people to a certain extent; therefore, the car washing wastewater can be discharged to the urban sewage pipe network after being treated. At present, the common treatment mode is to remove larger-particle silt pollutants in raw water through sand setting; and then, oil and fat in the wastewater are roughly removed through an oil separation tank, and suspended pollutants in the wastewater are removed through filtration.

Therefore, there is a need to provide an efficient and comprehensive car washing wastewater treatment system to solve the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a carwash effluent disposal system can get rid of pollution factors such as silt, grease, COD in the waste water high-efficiently, improves sewage equipment treatment effeciency, and equipment occupation space is little, reduces waste water treatment equipment and takes up an area of and space quantity, reduces the cost of renting a house.

In order to realize the above-mentioned purpose, the utility model discloses a carwash effluent disposal system, including the oil removal collecting pit, with the first coagulating basin of oil removal collecting pit intercommunication, with the first flocculation basin of first coagulating basin intercommunication, with the sediment air supporting system of first flocculation basin intercommunication, the oil removal collecting pit is used for getting rid of the grease, sediment air supporting system includes the sedimentation tank and is located dissolve the gas system in the sedimentation tank, it is used for getting rid of the suspended solid in the waste water to dissolve the gas system, the bottom intercommunication sludge impoundment of sedimentation tank, the upper portion intercommunication biochemical system of sedimentation tank, biochemical system is used for getting rid of the organic matter in the waste water.

Compared with the prior art, the utility model discloses a carwash effluent disposal system, carwash waste water flows into the oil removal collecting pit after collecting the pipe network and keeps apart and get rid of partial grease class pollutant, the play water of oil removal collecting pit passes through the coagulation of first coagulating basin and the flocculation of first flocculating tank in proper order, then get into the sediment air supporting system, heavier silt carries out gravity settling in the sedimentation tank and also deposits in the sedimentation tank through the precipitate after coagulating and flocculating, the mud of sedimentation tank is carried to the sludge impoundment, the dissolved air system can float grease class and other lighter suspended solids to the liquid level through the air supporting effect, scrape the sediment and get rid of the air supporting dross, the supernatant of sedimentation tank gets into biochemical system, COD biodegradation through biochemical system gets rid of organic matter in the waste water and reduces, so this carwash effluent disposal system can be comprehensive, effectually get rid of silt in the waste water, grease, pollution factors such as COD, improve sewage equipment treatment efficiency, and equipment occupation space is little, reduce waste water treatment equipment occupation area and space quantity, reduce renting cost.

Preferably, a lift pump is arranged between the oil separation collecting tank and the first coagulation tank.

Preferably, the first coagulation tank, the first flocculation tank and the biochemical system are communicated with a blower.

Preferably, the first coagulation tank is communicated with a PAC dispensing part, and the first flocculation tank is communicated with a PAM dispensing part.

Preferably, the air dissolving system comprises an air compressor and an air dispersing pipe communicated with the air compressor, and the air dispersing pipe is positioned in the sedimentation tank.

Preferably, a first sludge pump is arranged between the sedimentation tank and the sludge tank.

Preferably, the sludge tank is communicated with the biochemical system, and the sludge tank can enter the biochemical system.

Preferably, the car washing wastewater treatment system further comprises a second coagulation tank communicated with the biochemical system, a second flocculation tank communicated with the second coagulation tank, a sludge return sedimentation tank communicated with the second flocculation tank, and a clear water tank communicated with the upper part of the sludge return sedimentation tank, and the bottom of the sludge return sedimentation tank is communicated with the sludge tank.

Preferably, the sludge backflow sedimentation tank comprises a tank body part and a baffle plate, one end of the baffle plate is arranged at the top of the tank body part, the other end of the baffle plate extends towards the bottom to form a cantilever, the baffle plate and the tank wall on one side of the tank body part form an inlet area, the baffle plate and the tank wall on the other side of the tank body part form an outlet area, a concave part is arranged at the bottom of the tank body part, and the concave part is communicated with the sludge tank.

Preferably, an outlet area between the baffle plate and the tank body is provided with a filtering part.

Drawings

FIG. 1 is a schematic structural view of the car washing wastewater treatment system of the present invention.

FIG. 2 is a schematic structural diagram of a sludge return sedimentation tank in the carwash wastewater treatment system shown in FIG. 1.

Description of the symbols:

the system comprises an oil separation collecting tank 10, a first coagulation tank 20, a first flocculation tank 30, a sedimentation air flotation system 40, a sedimentation tank 41, an air dissolving system 43, an air compressor 431, an air diffusing pipe 433, a sludge tank 50, a biochemical system 60, a second coagulation tank 70, a second flocculation tank 80, a sludge backflow sedimentation tank 90, a tank body basic part 91, an inlet area 92, a baffle plate 93, an outlet area 94, a concave part 95, a filtering part 97, a clean water tank 100, a lifting pump 110, an air blower 120, a PAC dispensing part 130, a PAM dispensing part 140, a first sludge pump 150, a second sludge pump 160, a filter press pump 170 and a filter press 180.

Detailed Description

In order to explain the technical contents, structural features, objects and effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.

Please refer to fig. 1, the utility model discloses a carwash effluent disposal system, including oil removal collecting pit 10, first coagulating basin 20 with oil removal collecting pit 10 intercommunication, first flocculating constituent 30 with first coagulating basin 20 intercommunication, sediment air supporting system 40 with first flocculating constituent 30 intercommunication, oil removal collecting pit 10 is used for getting rid of the grease, sediment air supporting system 40 includes sedimentation tank 41 and is located the gas system 43 that dissolves in sedimentation tank 41, the gas system 43 that dissolves is used for getting rid of the suspended solid in the waste water, the bottom intercommunication sludge impoundment 50 of sedimentation tank 41, the upper portion intercommunication biochemical system 60 of sedimentation tank 41, biochemical system 60 is used for getting rid of the organic matter in the waste water.

In the above technical scheme, the car washing wastewater flows into the oil separation collecting tank 10 to be isolated and removed part of oil and fat pollutants after being collected by the collecting pipe network, the effluent of the oil separation collecting tank 10 sequentially passes through coagulation of the first coagulation tank 20 and flocculation of the first flocculation tank 30, and then enters the precipitation floatation system 40, heavy silt is subjected to gravity sedimentation in the sedimentation tank 41, and precipitates after coagulation and flocculation are also precipitated in the sedimentation tank 41, the sludge of the sedimentation tank 41 is conveyed to the sludge tank 50, the dissolved air system 43 can float the grease and other light suspended matters to the liquid surface through the floatation action, the scum is removed by scraping, the supernatant of the sedimentation tank 41 enters the biochemical system 60, organic matters in the wastewater are removed through the microbial degradation of the biochemical system 60, and the COD is reduced, so that the car washing wastewater treatment system can comprehensively and effectively remove pollution factors such as silt, grease, COD and the like in the wastewater, the treatment efficiency of sewage equipment, the occupied space is small, the occupied space of the wastewater treatment equipment is reduced, and the renting cost is reduced.

Referring to fig. 1, a first coagulation basin 20 is communicated with a PAC dispensing part 130, a first flocculation basin 30 is communicated with a PAM dispensing part 140, a PAC (polyaluminium chloride) material required by the PAC dispensing part 130 is added, and then the first coagulation basin 20 is conveyed, a PAM dispensing part 140 is added with a PAM (polyacrylamide) material required by the PAM dispensing part, and then the first flocculation basin 30 is conveyed, and effluent of an oil separation collection basin 10 is sequentially treated by the first coagulation basin 20 and the first flocculation basin 30, and then is precipitated in a precipitation basin 41.

Referring to fig. 1, the first coagulation tank 20, the first flocculation tank 30 and the biochemical system 60 are communicated with a blower 120, the blower 120 performs aeration to uniformly mix, so as to improve coagulation and flocculation effects of the first coagulation tank 20 and the first flocculation tank 30, and the blower 120 performs aeration to provide oxygen to the biochemical system 60, so that the wastewater in the biochemical system 60 is in a flowing state, so as to ensure that the wastewater is fully contacted with the microbial fillers immersed in the wastewater.

Referring to fig. 1, a lift pump 110 is disposed between the oil separation collecting tank 10 and the first coagulation tank 20, and the wastewater in the oil separation collecting tank 10 can be rapidly and efficiently input into the first coagulation tank 20 by the action of the lift pump 110, so as to increase the processing speed.

Referring to fig. 1, the air dissolving system 43 includes an air compressor 431 and an air diffusing pipe 433 communicated with the air compressor 431, the air diffusing pipe 433 is located in the sedimentation tank 41, the air dissolving system 43 can generate micro-nano bubbles to adhere to suspended matter flocs in water, the suspended matter rises to the water surface along with the micro bubbles to form scum, and the scum is scraped to remove the floating scum, so that the suspended flocs in the water are removed. The sedimentation and air flotation system 40 integrates sedimentation and air flotation, can remove sedimentation sludge and air flotation scum through sludge discharge and slag scraping respectively, quickly and effectively carries out pretreatment before biochemistry on wastewater, and reduces the occupied space of equipment.

Referring to fig. 1, a first sludge pump 150 is disposed between the sedimentation tank 41 and the sludge tank 50, and the sludge in the sedimentation tank 41 is transferred to the sludge tank 50 by the first sludge pump 150, so as to improve the treatment efficiency. Further, the sludge tank 50 is communicated with the biochemical system 60, and the sludge tank 50 can enter the biochemical system 60. That is, the sludge in the sludge tank 50 can flow back to the biochemical system 60, so as to avoid the loss of the activated sludge. The biochemical system 60 comprises but is not limited to an aerobic tank, the blower 120 provides oxygen for the aerobic tank, and sludge lost from the aerobic tank continuously circulates back to the aerobic tank through the backflow effect of the sludge tank 50, so that the concentration of the activated sludge in the contact oxidation tank is ensured, the aerobic tank has the advantages of the contact oxidation tank and the activated sludge tank, the size of the aerobic tank is reduced, the aerobic retention time is shortened, and the biochemical treatment efficiency is improved.

Referring to fig. 1, the car washing wastewater treatment system further includes a second coagulation tank 70 communicated with the biochemical system 60, a second flocculation tank 80 communicated with the second coagulation tank 70, a sludge return sedimentation tank 90 communicated with the second flocculation tank 80, and a clear water tank 100 communicated with the upper portion of the sludge return sedimentation tank 90, wherein the bottom of the sludge return sedimentation tank 90 is communicated with the sludge tank 50. PAC (polyaluminium chloride) materials are added into the second coagulation tank 70, PAM (polyacrylamide) materials are added into the second coagulation tank 80, the sludge backflow sedimentation tank 90 can carry out activated sludge backflow to avoid sludge loss, and can carry out coagulation sedimentation sludge discharge to remove suspended matters carried in the effluent of the biochemical system 60, so that the effluent is clear. The effluent of the biochemical system 60 sequentially enters the second coagulation tank 70 and the second flocculation tank 80 and then flows into the sludge return sedimentation tank 90 for sludge-water separation, and after the sludge is precipitated in the sludge return sedimentation tank 90, the effluent enters the clean water tank 100 and is discharged after reaching the standard. Further, a second sludge pump 160 is provided between the sludge return sedimentation tank 90 and the sludge tank 50, and the sludge in the sludge return sedimentation tank 90 is transported to the sludge tank 50 by the second sludge pump 160. Furthermore, the car washing wastewater treatment system also comprises a filter press pump 170 and a filter press 180 which are sequentially communicated with the sludge pool 50, and the sludge in the sludge pool 50 is sequentially treated by the filter press pump 170 and the filter press 180 to obtain sludge cakes which can be transported to the outside.

Referring to fig. 2, the sludge return sedimentation tank 90 includes a tank body 91 and a baffle 93, one end of the baffle 93 is disposed on the top of the tank body 91, the other end of the baffle 93 extends to the bottom to form a cantilever (i.e. the baffle 93 has a certain distance from the bottom of the tank body 91), the baffle 93 forms an inlet region 92 with the tank wall on one side of the tank body 91, the baffle 93 forms an outlet region 94 with the tank wall on the other side of the tank body 91, a concave portion 95 is disposed on the bottom of the tank body 91, and the concave portion 95 is communicated with the sludge tank 50. That is, the effluent of the second flocculation tank 80 flows in through the inlet region 92 between the baffle 93 and the tank wall, and then flows out to the clean water tank 100 in an ascending trend through the outlet region 94 between the baffle 93 and the tank wall, and the sludge falls into the recess 95. Further, the outlet area 94 between the baffle plate 93 and the tank body 91 is provided with a filtering part 97, and the outlet water is further purified by the filtering part 97, so that the treatment effect is improved.

The working principle of the car washing wastewater treatment system of the utility model is explained by combining the figures 1-2:

the car washing wastewater flows into the oil separation collecting tank 10 after being collected by a collecting pipe network to be isolated and removed part of grease pollutants, the effluent of the oil separation collecting tank 10 is quickly conveyed to the first coagulation tank 20 by virtue of the lifting pump 110 to be coagulated and is combined with a coagulant added into the first coagulation tank 20 to enable small suspended particles in a water body to be aggregated into large-particle substances, the effluent enters the first flocculation tank 30 to be acted with a flocculant and then enters the precipitation air floatation system 40, heavy silt is subjected to gravity sedimentation in the sedimentation tank 41 and the sediment after coagulation and flocculation is also precipitated in the sedimentation tank 41, the sludge in the sedimentation tank 41 is conveyed to the sludge tank 50 to be adhered with suspended substance flocs in the water by virtue of the air compressor 431 and the air dispersing pipe 433 to generate micro-nano bubbles, the suspended substances rise to the water surface along with micro bubbles to form scum, and the scum is scraped to remove the scum, so that the suspended substances in the water are removed. The supernatant of the sedimentation tank 41 enters the biochemical system 60, organic matters in the wastewater are removed through the microbial degradation of the biochemical system 60 to reduce COD, and the sludge in the sludge tank 50 can flow back to the biochemical system 60, so that the loss of activated sludge is avoided. The effluent of the biochemical system 60 sequentially passes through the second coagulation tank 70 and the second flocculation tank 80, the effluent of the second flocculation tank 80 flows in through an inlet area 92 between the baffle plate 93 and the tank wall, and then flows out to a clean water tank 100 in an ascending trend through an outlet area 94 between the baffle plate 93 and the tank wall, the sludge falls into the concave part 95, the sludge is conveyed to the sludge tank 50 by the aid of a second sludge pump 160, and the sludge in the sludge tank 50 is sequentially treated by the pressure filter pump 170 and the pressure filter 180 to obtain sludge cakes which can be transported out for treatment.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, so that the present invention will not be limited by the accompanying claims.

Claims

1. The utility model provides a carwash effluent disposal system, its characterized in that, including the oil removal collecting pit, with the first coagulating basin of oil removal collecting pit intercommunication, with the first flocculation basin of first coagulating basin intercommunication, with the sediment air supporting system of first flocculation basin intercommunication, the oil removal collecting pit is used for getting rid of the grease, sediment air supporting system includes the sedimentation tank and is located the air system that dissolves in the sedimentation tank, it is used for getting rid of the suspended solid in the waste water to dissolve the air system, the bottom intercommunication sludge impoundment of sedimentation tank, the upper portion intercommunication biochemical system of sedimentation tank, biochemical system is used for getting rid of the organic matter in the waste water.

2. The car wash wastewater treatment system of claim 1, wherein a lift pump is disposed between the oil separation collection tank and the first coagulation tank.

3. The carwash wastewater treatment system of claim 1, wherein the first coagulation basin, the first flocculation basin and the biochemical system are in communication with a blower.

4. The car wash wastewater treatment system of claim 1, wherein the first coagulation basin communicates with a PAC dispensing department and the first flocculation basin communicates with a PAM dispensing department.

5. The car wash wastewater treatment system of claim 1, wherein the air dissolving system comprises an air compressor and an air diffuser pipe in communication with the air compressor, the air diffuser pipe being located in the sedimentation tank.

6. The carwash wastewater treatment system of claim 1 wherein a first sludge pump is disposed between the sedimentation tank and the sludge tank.

7. The carwash wastewater treatment system of claim 1, wherein the sludge basin is in communication with the biochemical system, the sludge basin being accessible to the biochemical system.

8. The carwash wastewater treatment system according to claim 1, further comprising a second coagulation tank communicated with the biochemical system, a second flocculation tank communicated with the second coagulation tank, a sludge return sedimentation tank communicated with the second flocculation tank, and a clear water tank communicated with an upper portion of the sludge return sedimentation tank, wherein the bottom of the sludge return sedimentation tank is communicated with the sludge tank.

9. The carwash wastewater treatment system according to claim 8, wherein the sludge backflow sedimentation tank comprises a tank body and a baffle plate, one end of the baffle plate is arranged at the top of the tank body, the other end of the baffle plate is arranged in a cantilever manner extending towards the bottom, the baffle plate and the tank wall on one side of the tank body form an inlet area, the baffle plate and the tank wall on the other side of the tank body form an outlet area, and the bottom of the tank body is provided with a concave part which is communicated with the sludge tank.

10. The carwash wastewater treatment system of claim 9 wherein the outlet zone between the barrier and the tank base is provided with a filter section.