CN111847646A - Biological treatment equipment and process for car washing sewage - Google Patents
Biological treatment equipment and process for car washing sewage Download PDFInfo
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- CN111847646A CN111847646A CN202010876187.7A CN202010876187A CN111847646A CN 111847646 A CN111847646 A CN 111847646A CN 202010876187 A CN202010876187 A CN 202010876187A CN 111847646 A CN111847646 A CN 111847646A
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- 239000010865 sewage Substances 0.000 title claims abstract description 95
- 238000005406 washing Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims description 49
- 230000000813 microbial effect Effects 0.000 claims description 22
- 239000012528 membrane Substances 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 16
- 238000011001 backwashing Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000000746 purification Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000009287 sand filtration Methods 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of car washing sewage treatment, in particular to biological car washing sewage treatment equipment and a biological car washing sewage treatment process. Its structure includes tertiary sedimentation tank, and tertiary sedimentation tank sets up in the venturi jet pump in the retort top outside through the pipe connection that has the sewage pump, venturi jet pump's shower nozzle stretch into the retort in, and just right the gas-liquid plate of distributor that the retort top set up, the retort in be provided with 2 at least filter material layers, filter material layer below set up the filter plate, the retort in be provided with water drainage pipe, the water drainage pipe lower extreme stretch into filter plate below, water drainage pipe upper end stretch out the upper portion outside of retort to through pipe connection clean water basin, retort lower part one side be provided with air inlet. The biological treatment equipment and the process for the car washing sewage can efficiently separate and remove various pollutants, thereby fundamentally solving the water quality problems of unclean effluent, blackening, peculiar smell, foaming and the like.
Description
Technical Field
The invention relates to the technical field of car washing sewage treatment, in particular to biological car washing sewage treatment equipment and a biological car washing sewage treatment process.
Background
The car washing industry has the characteristics of small site scale and small daily water consumption, and the water treatment technology needs to meet the requirements of small floor area, strong compatibility with the actual situation, and low investment cost and operating cost.
The non-professional technical personnel of the user of the car washing water recycling system need to meet the requirements of full-automatic operation, good and stable water quality purification effect, less system maintenance and even no maintenance.
Pollutants in the car washing sewage exist in a suspension state, an emulsion state, a colloid state and a solution state, and main pollutant components comprise silt, suspended matters, oil stains, soluble organic matters, surfactants, germs and the like.
The structure and the filter material of the currently used car washing sewage treatment purifying equipment are selected as follows: quartz sand, iron manganese sand, activated carbon, coal, plastic and the like are layered according to granularity and are distributed in an equipment structure. These sewage treatment clarification plant respectively have not enough in the operation: for example, the method has the defects of large back flushing resistance, high back flushing energy consumption (such as quartz sand), easy loss of filter materials along with the discharge of back flushing water during back flushing (such as sand, activated carbon and coal), high manufacturing cost, poor secondary pollution filtering effect caused by adding medicaments and the like, and the defects directly cause high operation cost of the car washing industry, and the sewage can not reach the national and local urban sewage discharge standard.
Along with social progress and increasingly rapid urbanization in China, the physical living standard of people is continuously improved, automobiles become indispensable transportation tools in the life of people, and the national automobile holding capacity reaches 3. As many as 8 million cars are in rapid growth with a 12% annual growth rate, the need for car washes across the country has become a huge service industry. At present, the car washing industry basically uses tap water for washing cars, and due to the fact that industrial management is not standard, car washing sewage is randomly discharged to the ground surface and a sewer, so that water resources are seriously wasted, and the water environment is also seriously polluted due to the fact that the sewage contains a large amount of silt, suspended matters, oil stains, soluble organic matters, surfactants and germs. Therefore, how to effectively purify the car washing sewage and realize the recycling is a major problem to be solved urgently in the whole car washing industry and even the whole society at present.
There are many car washing water treatment facilities on the market at present, and the water treatment process technology carries out simple series-parallel combination, mainly has following several technologies:
(1) multi-stage precipitation + electrolysis/electroflocculation;
(2) multistage coagulating sedimentation, oil separation, a precision filter and photocatalytic oxidation;
(3) multi-stage precipitation, oil separation, a membrane biological reaction tank and disinfection;
(4) multi-stage precipitation, coagulation, air flotation, sand filtration and disinfection;
(5) multi-stage precipitation, oil removal, coagulation, sand filtration and disinfection;
(6) multistage precipitation, oil removal, coagulation, sand filtration, carbon filtration, precise filtration and membrane filtration.
The existing car washing water treatment technology generally combines different process technologies in series or superposition according to a logic sequence, so that the system has large occupied area, high investment cost, high operation energy consumption and unstable water purification effect; the auxiliary agent is required to be added, the filter material is required to be frequently cleaned, and the filter element is required to be replaced regularly, so that the actual maintenance work is complicated, and the later-period operation cost is high. The unattended full-automatic operation requirement cannot be realized; at present, no universal technology which is really effective and easy to popularize exists in the market.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides biological treatment equipment and a biological treatment process for car washing sewage, which can efficiently separate and remove various pollutants, thereby fundamentally solving the water quality problems of unclean effluent, blackening, peculiar smell, foaming and the like.
The technical scheme adopted by the invention is as follows:
the utility model provides a carwash sewage biological treatment equipment, includes tertiary sedimentation tank, tertiary sedimentation tank sets up in the venturi jet pump in the retort top outside through the pipe connection that has the sewage pump, venturi jet pump's shower nozzle stretch into the retort in, and just right the gas-liquid plate of distributor that the retort top set up, the retort in be provided with 2 at least filter layers, filter layer below set up the filter plate, the retort in be provided with water drainage pipeline, the water drainage pipeline lower extreme stretch into the filter plate below, water drainage pipeline upper end stretch out the upper portion outside of retort to through the pipe connection clean water basin, retort lower part one side be provided with air inlet.
And a liquid level meter is arranged in the third-stage sedimentation tank.
The top of the reaction tank is provided with a sewage outlet.
The bottom of the reaction tank is provided with a back washing inlet which is connected with a back washing pump.
A liquid level meter is arranged in the clean water tank.
The filter material layer is internally provided with spherical filler, and a microbial film grows in the inner cavity space of the fine holes on the surface of the spherical filler.
A biological treatment process for automobile sewage comprises the following steps:
A. after the car washing sewage flows into the third-stage sedimentation tank for sedimentation, the sewage is pumped into a Venturi jet pump by a sewage pump;
B. sewage pumped into the Venturi jet pump is pumped into a gas-liquid distribution disc in the reaction tank after gas-liquid mixing, the sewage is uniformly sprayed on an upper filter material layer of the reaction tank by the gas-liquid distribution disc, a lower filter material layer is arranged below the upper filter material layer, and the sewage is subjected to nitrification and denitrification while being decarbonized and is filtered after passing through the filter material layer;
C. the filtered clean water enters a clean water area at the lower part of the reaction tank through a filter plate and flows into a clean water tank through a clean water outlet pipe; and the organic matters and the suspended solid particles flow into the third-stage sedimentation tank from the sewage outlet to be sedimentated again to prepare water, so that the periodic water preparation process is completed.
An air inlet is arranged on one side of the lower part of the reaction tank, so that air flows upwards from the lower part of the reaction tank.
And D, when the filter material layer in the reaction tank is filtered to be saturated, backwashing the reaction tank by using the combination of the treated clear water outlet and compressed air at a backwashing inlet arranged below the reaction tank, and discharging dirt in the reaction tank and the aged microbial membrane on the surface of the filter material layer.
The invention relates to a biological treatment process for car washing sewage, wherein the sewage is mixed with air by a Venturi jet pump and is jetted into sewage treatment and purification equipment in a bubble state of vapor-fog mixed water. Spraying sewage in the equipment space to make oxygen in the air forcibly transfer into the liquid, so that the sewage can obtain enough dissolved oxygen; the spraying direction provides kinetic energy to the tangential direction of the disc-shaped gas-liquid distribution disc, so that the gas-liquid distribution disc continuously updates the liquid level under the condition that the disc rotates without kinetic energy consumption, an air interface can be transferred to a liquid interface, the sewage can obtain enough dissolved oxygen, and meanwhile, the gas-liquid distribution disc also realizes the effect of uniform water distribution in the sewage biological treatment and purification equipment. After the sewage entering the sewage treatment and purification equipment obtains enough dissolved oxygen, the sewage passes through the filter material layer and is in a downward flow state; under the condition of supplying oxygen to the lower part of the filter material layer, the oxygen is in an upward flow state, so that organic matters in the sewage are aerobically degraded and subjected to nitrification denitrification. The novel spherical filler is used in the reaction tank, a microbial membrane grows in the pore inner cavity space on the surface of the spherical filler, when sewage flows through the filter material layer from top to bottom, the microbial membrane absorbs organic pollutants in the sewage as nutrient substances of the metabolism of the microbial membrane, and meanwhile, the filter material is suspended organic matters in the sewage and has the effects of interception, adsorption, precipitation and degradation. After the reaction tank is saturated in filtration, the filter tank is periodically backwashed by combining treated effluent and compressed air, and dirt in the reaction tank and aged microbial membranes proliferated on the surfaces of filter materials are removed, so that the activity of the microbial membranes is ensured. The principle of sewage treatment is the microbial oxidative decomposition in a biological membrane attached to a filter material in a reaction tank; adsorption and retention of the filter material and the microbial membrane; the sewage is treated by the graded predation of food chains formed along the water flow direction and the denitrification of micro-environment inside the microbial membrane. A complete sewage treatment period is from the beginning of filtration to the end of backwashing.
The technical scheme provided by the invention has the beneficial effects that:
the invention starts from the practical predicament of the car washing market and the characteristics of the car washing sewage, analyzes the market demand and the root cause of the water quality problem, thoroughly changes the original water purification flow and water treatment process by using the sewage biological treatment equipment, realizes the system integration control, and ensures that the recycling of the sewage system reaches the 0 discharge standard. The work needs to supply 220V power electricity; the air is compressed, no medicament is required to be added during operation, and secondary pollution is avoided; the system has the advantages that the operation cost is low without any material loss, unattended full-automatic operation can be really realized, the operation and maintenance are simple and convenient, and finally, remote regulation and control operation can be realized on a cloud platform and a block-connected data platform mobile terminal through the technology of the Internet of things; monitoring the water quality and flow in time; and (4) remote charging.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a biological treatment device and process for car-washing wastewater according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
As shown in the attached figure 1, the biological treatment equipment for the car washing sewage comprises a three-stage sedimentation tank 1, wherein the three-stage sedimentation tank 1 is connected with a Venturi jet pump 4 arranged on the outer side of the top of a reaction tank 3 through a pipeline with a sewage pump 2, a nozzle of the Venturi jet pump 4 extends into the reaction tank 3 and is opposite to a gas-liquid distribution disc 5 arranged on the top of the reaction tank 3, at least 2 filter material layers 6 are arranged in the reaction tank 3, a filter plate 7 is arranged below the filter material layers 6, a drainage pipeline 8 is arranged in the reaction tank 3, the lower end of the drainage pipeline extends into the lower part of the filter plate 7, the upper end of the drainage pipeline 8 extends out of the outer side of the upper part of the reaction tank 3 and is connected with a clean water tank 10 through a pipeline 9, and an air inlet 11 is arranged on one side of the lower part of the reaction tank 3.
A liquid level meter 12 is arranged in the third-stage sedimentation tank 1.
The top of the reaction tank 3 is provided with a sewage outlet 13.
The bottom of the reaction tank 3 is provided with a back washing inlet 14, and the back washing inlet 14 is connected with a back washing pump 15.
A liquid level meter 16 is arranged in the clean water tank 10.
In the present embodiment, a spherical filler is used in the filter material layer 6, and a microbial film grows in a pore lumen space on the surface of the spherical filler.
The invention also provides a biological treatment process for the automobile sewage, which comprises the following steps:
A. after the car washing sewage flows into the third-stage sedimentation tank 1 for sedimentation, the sewage is pumped into a Venturi jet pump 4 by a sewage pump 2;
B. sewage pumped into the venturi jet pump 4 is pumped into a gas-liquid distribution disc 5 in the reaction tank 3 after gas-liquid mixing, the sewage is uniformly sprayed on an upper filter material layer of the reaction tank 3 by the gas-liquid distribution disc 5, a lower filter material layer is arranged below the upper filter material layer, and the sewage is subjected to nitrification and denitrification while being decarbonized and is filtered after passing through a filter material layer 6;
C. the filtered clean water enters a clean water area at the lower part of the reaction tank 3 through the filter plate 7 and flows into a clean water tank 10 through a clean water outlet pipe; the organic matters and the suspended solid particles flow into the third-stage sedimentation tank 1 from the sewage outlet 13 to be sedimentated again to prepare water, and the periodic water preparation process is completed.
D. When the filter material layer in the reaction tank 3 is filtered to saturation, the reaction tank 3 is backwashed by using the combination of the treated clear water outlet 17 and the compressed air at the backwashing inlet 14 arranged below the reaction tank 3, and dirt in the reaction tank and the aged microbial membrane on the surface of the filter material layer are discharged.
An air inlet 11 is provided at a lower side of the reaction tank 3 so that air flows upward from below the reaction tank 3.
According to the biological treatment equipment for the car washing sewage, sewage is mixed with air through the Venturi jet pump 4 and is jetted into the sewage treatment and purification equipment in a bubble state of gas-liquid mixed water. Spraying the sewage in the equipment space to make oxygen in the air forcibly transfer into the liquid, so that the sewage can obtain enough dissolved oxygen; the spraying direction provides kinetic energy to the tangential direction of the disc-shaped gas-liquid distribution disc, so that the gas-liquid distribution disc continuously updates the liquid level under the condition that the circular gas-liquid distribution disc rotates without kinetic energy consumption, an air interface can be transferred to a liquid interface, the sewage can obtain enough dissolved oxygen, and meanwhile, the gas-liquid distribution disc also realizes the effect of uniform water distribution in the biological sewage treatment and purification equipment. After the sewage entering the sewage treatment and purification equipment obtains enough dissolved oxygen, the sewage passes through the filter material layer and is in a downward flow state; under the condition of supplying oxygen to the lower part of the filter material layer, the gas is in an upward flow state, so that organic matters in the sewage are aerobically degraded and subjected to nitrification denitrification. The novel spherical filler is used in the reaction tank, a microbial membrane grows in the pore inner cavity space on the surface of the spherical filler, when sewage flows through the filter material layer from top to bottom, the microbial membrane absorbs organic pollutants in the sewage as nutrient substances of the metabolism of the microbial membrane, and meanwhile, the filter material is suspended organic matters in the sewage and has the effects of interception, adsorption, precipitation and degradation. After the reaction tank is saturated in filtration, the filter tank is periodically backwashed by combining treated effluent and compressed air, and dirt in the reaction tank and aged microbial membranes proliferated on the surfaces of filter materials are removed, so that the activity of the microbial membranes is ensured. The principle of sewage treatment is the microbial oxidative decomposition in a biological membrane attached to a filter material in a reaction tank; adsorption and retention of the filter material and the microbial membrane; the sewage is treated by the graded predation of food chains formed along the water flow direction and the denitrification of micro-environment inside the microbial membrane. A complete sewage treatment period is from the beginning of filtration to the end of backwashing.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a carwash sewage biological treatment equipment, includes tertiary sedimentation tank, its characterized in that, tertiary sedimentation tank set up in the venturi jet pump in the retort top outside through the pipe connection that has the sewage pump, the shower nozzle of venturi jet pump stretch into the retort in, and just right the gas-liquid plate of distributor that the retort top set up, the retort in be provided with 2 at least filter material layers, filter material layer below set up the filter plate, the retort in be provided with drain line, the drain line lower extreme stretch into the filter plate below, drain line upper end stretch out the upper portion outside of retort to through the pipe connection clean water basin, retort lower part one side be provided with air inlet.
2. The biological treatment equipment for the carwash sewage according to claim 1, wherein a liquid level meter is arranged in the tertiary sedimentation tank.
3. The biological treatment equipment for the carwash sewage according to claim 1, wherein the top of the reaction tank is provided with a sewage outlet.
4. The biological treatment equipment for the sewage generated by washing the vehicles according to claim 1, wherein a back washing inlet is arranged at the bottom of the reaction tank, and a back washing pump is connected to the back washing inlet.
5. The biological treatment equipment for car washing wastewater according to claim 1, wherein a liquid level meter is arranged in the clean water tank.
6. The biological treatment equipment for the sewage generated by washing the vehicles according to claim 1, wherein the filtering material layer is internally provided with spherical filler, and a microbial film grows in the pore inner cavity space on the surface of the spherical filler.
7. A biological treatment process for automobile sewage comprises the following steps:
A. after the car washing sewage flows into the third-stage sedimentation tank for sedimentation, the sewage is pumped into a Venturi jet pump by a sewage pump;
B. sewage pumped into the Venturi jet pump is pumped into a gas-liquid distribution disc in the reaction tank after gas-liquid mixing, the sewage is uniformly sprayed on an upper filter material layer of the reaction tank by the gas-liquid distribution disc, a lower filter material layer is arranged below the upper filter material layer, and the sewage is subjected to nitrification and denitrification while being decarbonized and is filtered after passing through the filter material layer;
C. the filtered clean water enters a clean water area at the lower part of the reaction tank through a filter plate and flows into a clean water tank through a clean water outlet pipe; and the organic matters and the suspended solid particles flow into the third-stage sedimentation tank from the sewage outlet to be sedimentated again to prepare water, so that the periodic water preparation process is completed.
8. The biological treatment process for automobile sewage according to claim 7, wherein an air inlet is provided at one side of the lower part of the reaction tank, so that air flows upward from the lower part of the reaction tank.
9. The biological treatment process for automobile sewage according to claim 7, further comprising a step D of backwashing the reaction tank by using the combination of the treated clear water outlet and compressed air at a backwashing inlet arranged below the reaction tank after the filtering material layer in the reaction tank is filtered and saturated, and discharging dirt in the reaction tank and the aged microbial membrane on the surface of the filtering material layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010876187.7A CN111847646A (en) | 2020-08-27 | 2020-08-27 | Biological treatment equipment and process for car washing sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010876187.7A CN111847646A (en) | 2020-08-27 | 2020-08-27 | Biological treatment equipment and process for car washing sewage |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182073A (en) * | 2007-11-15 | 2008-05-21 | 上海交通大学 | High-load biological filter tank sewage water treating method capable of backwashing |
| CN203922839U (en) * | 2014-06-11 | 2014-11-05 | 湖南迪亚环境工程有限公司 | A kind of Novel small-sized sewage treatment unit |
| CN104529076A (en) * | 2014-12-26 | 2015-04-22 | 上海中信水务产业有限公司 | Sewage deep treatment biofilter device system and treatment process |
| CN212269593U (en) * | 2020-08-27 | 2021-01-01 | 吕青彦 | Biological treatment equipment for car washing sewage |
-
2020
- 2020-08-27 CN CN202010876187.7A patent/CN111847646A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182073A (en) * | 2007-11-15 | 2008-05-21 | 上海交通大学 | High-load biological filter tank sewage water treating method capable of backwashing |
| CN203922839U (en) * | 2014-06-11 | 2014-11-05 | 湖南迪亚环境工程有限公司 | A kind of Novel small-sized sewage treatment unit |
| CN104529076A (en) * | 2014-12-26 | 2015-04-22 | 上海中信水务产业有限公司 | Sewage deep treatment biofilter device system and treatment process |
| CN212269593U (en) * | 2020-08-27 | 2021-01-01 | 吕青彦 | Biological treatment equipment for car washing sewage |
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