CN220449976U - Industrial wastewater treatment system of steam repair plant - Google Patents
Industrial wastewater treatment system of steam repair plant Download PDFInfo
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- CN220449976U CN220449976U CN202321978287.6U CN202321978287U CN220449976U CN 220449976 U CN220449976 U CN 220449976U CN 202321978287 U CN202321978287 U CN 202321978287U CN 220449976 U CN220449976 U CN 220449976U
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 29
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000002351 wastewater Substances 0.000 claims abstract description 67
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000020477 pH reduction Effects 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims description 70
- 238000009300 dissolved air flotation Methods 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 230000007062 hydrolysis Effects 0.000 claims 2
- 238000006460 hydrolysis reaction Methods 0.000 claims 2
- 238000000926 separation method Methods 0.000 abstract description 14
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 32
- 239000010865 sewage Substances 0.000 description 18
- 239000003344 environmental pollutant Substances 0.000 description 14
- 231100000719 pollutant Toxicity 0.000 description 14
- 238000005406 washing Methods 0.000 description 14
- 230000003137 locomotive effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000009835 boiling Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The utility model discloses an industrial wastewater treatment system of a steam repair plant, which comprises a wastewater treatment station, wherein a water outlet of the wastewater treatment station is connected with a grating pool, a water outlet of the grating pool is connected with an inclined plate oil separation pool, a water outlet of the inclined plate oil separation pool is connected with an adjusting pool, a water outlet of the adjusting pool is connected with a wastewater comprehensive reaction device, a water outlet of the wastewater comprehensive reaction device is connected with an integrated dissolved air floatation device, a water outlet of the integrated dissolved air floatation device is connected with a hydrolytic acidification pool, a water outlet of the hydrolytic acidification pool is connected with a contact oxidation pool, a water outlet of the contact oxidation pool is connected with a sedimentation pool, a water outlet of the sedimentation pool is connected with an intermediate pool, a water outlet of the intermediate pool is connected with a multi-medium filter, a water outlet of the multi-medium filter is connected with an activated carbon filter, and a water outlet of the activated carbon filter is connected to a drain pipe or a drainage canal. The utility model can reduce the production cost and labor intensity and ensure that the effluent stably reaches the required water quality standard.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to an industrial wastewater treatment system of a steam repair plant.
Background
The industrial wastewater of the gasoline repair factory mainly contains various diesel oil, engine oil, hydraulic oil, lubricating oil, paint sewage, alkaline nitrogen and phosphorus-containing wastewater and the like, and has complex components. The waste water in the factory of the locomotive repair part is mainly boiling and washing waste water, and because the production content is complex, the washing points of workshops in the factory are more, and the source points of the waste water are more. The various wastewater discharge, treatment and discharge conditions in the factory are as follows:
1) Boiling and washing waste water
After the diesel locomotive is disassembled in a factory, as a large amount of oil stains are contained on the components, the oil stains on the components are not removed, a boiling and washing tank is arranged in the locomotive disassembly workshop for boiling and washing, steam is used for directly heating the boiling and washing liquid, sodium hydroxide is added in the boiling and washing liquid, a large amount of pollutants such as petroleum oil, sodium hydroxide and the like are contained in the boiling and washing liquid, oil separation pretreatment is firstly carried out in a factory after the oil separation is carried out at regular time, and then the waste water enters a factory waste water treatment station for unified treatment.
2) Flushing waste water
The diesel locomotive body and the boiled and washed locomotive disassembly parts are required to be washed, washing wastewater is generated during washing, main pollutants in the wastewater are oil, dust and the like, and the average water consumption is about 20t per locomotive. The flushing wastewater is collected by the ditches around the site and then enters the factory wastewater treatment station for unified treatment.
3) Cleaning wastewater
The disassembled parts and small parts of the diesel locomotive are cleaned in a cleaning tank arranged in each factory building, cleaning water is recycled in the water tank and is discharged regularly, wherein main pollutants are oil, dust, anionic surfactant and the like. The parts of the motor car steering frame after disassembly and the parts of the electric plant after secondary disassembly are all required to be cleaned in a cleaning tank matched with each plant, cleaning water is recycled in the water tank and is discharged at regular time, wherein main pollutants are oil, dust, anionic surfactant and the like. The cleaning wastewater enters a factory wastewater treatment station through a pipe network to be treated uniformly.
4) Waste water from putty grinding
The diesel locomotive body is polished by adopting a wet method after the last putty scraping, a small amount of waste water is generated, each locomotive generates about 1t of waste water on average, and the main pollutants are suspended matters, are collected through a trench in a putty room and then enter a factory waste water treatment station through a pipeline for unified treatment.
5) Waste water from rain experiments
After the assembly test of the diesel locomotive is finished, a rain experiment is required to be carried out, wastewater generated in the rain experiment is collected through a trench around the field and then is recycled after being filtered, but the wastewater is required to be discharged out periodically along with the increase of the concentration of pollutants such as suspended matters and the like. And the discharged wastewater enters a factory wastewater treatment station through a pipe network to be treated uniformly.
6) Workshop cleaning wastewater
During production, each workshop does not regularly clean the ground and part of equipment, clean wastewater is generated in the cleaning process, and the main pollution component is oil. The wastewater enters a factory wastewater treatment station through a pipe network for unified treatment.
The locomotive workshop boiling and washing wastewater is alkaline wastewater, and as the boiling and washing locomotive parts contain much oil, the solid wastewater contains most oil substances, and the main pollutants are sodium hydroxide and oil substances, so that the concentration of the pollutants is high. The main pollutants in the washing wastewater of various locomotives and the washing wastewater of various repair parts are suspended matters, oil substances and cleaning agents, and the concentration of the pollutants is uneven. The main pollutants in the putty polishing wastewater and the circulating sewage of various vehicle rain tests are suspended matters, the water quantity is small, and the pollutants are single. The main pollutants in the cleaning wastewater of each workshop are suspended matters and oil substances, and the concentration of the pollutants is uneven.
The comprehensive indexes of the wastewater are shown in the following table:
these waste waters, if discharged directly, will pollute the environment. The existing treatment methods are various, and most of the treatment methods have the problems of high cost and complex treatment system.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide another industrial wastewater treatment system of a steam repair plant, so as to treat suspended matters, oil substances and cleaning agents in wastewater, and the quality of effluent water can meet the first-level discharge standard of Integrated wastewater discharge Standard (GB 8979-1996).
In order to achieve the above purpose, the utility model provides an industrial wastewater treatment system of a steam repair plant, which comprises a wastewater treatment station for collecting industrial wastewater, wherein a water outlet of the wastewater treatment station is connected with a water inlet of a grating pool, a water outlet of the grating pool is connected with a water inlet of an inclined plate oil separation pool, a water outlet of the inclined plate oil separation pool is connected with a water inlet of a regulating pool, a water outlet of the regulating pool is connected with a water inlet of a wastewater comprehensive reaction device, an acid adding device, a PAC adding device and a PAM adding device are connected on the wastewater comprehensive reaction device, a water outlet of the wastewater comprehensive reaction device is connected with a water inlet of an integrated dissolved air floatation device, a water outlet of the integrated dissolved air floatation device is connected with a water inlet of a hydrolytic acidification pool, a water outlet of the hydrolytic acidification pool is connected with a water inlet of a contact oxidation pool, a water outlet of the contact oxidation pool is connected with a water inlet of a sedimentation pool, a water outlet of an intermediate pool is connected with a water inlet of a multi-medium filter, a water outlet of the multi-medium filter is connected with a water inlet of an activated carbon filter, and a water outlet of the activated carbon filter is connected to a drain or a drain channel.
In the scheme, the method comprises the following steps: the sludge outlet of the integrated dissolved air flotation device, the sludge outlet of the multi-medium filter, the sludge outlet of the activated carbon filter and the sludge outlet of the sedimentation tank are respectively connected with the sludge concentration tank. And the scum and the sludge deposited at the bottom of the integrated dissolved air flotation device are discharged into a sludge concentration tank, and the back flushing muddy water of the multi-medium filter and the activated carbon filter is discharged into the sludge concentration tank and is subjected to sludge concentration treatment through the sludge concentration tank.
In the scheme, the method comprises the following steps: the sludge outlet of the sedimentation tank is also provided with a sludge return pipe connected to the contact oxidation tank, part of sludge in the sedimentation tank returns to the contact oxidation tank to be supplemented with sludge, and the rest of sludge is discharged into the sludge concentration tank.
In the scheme, the method comprises the following steps: the sludge concentration tank is connected with the sludge dewatering machine through a sludge pump, and a filtrate outlet of the sludge dewatering machine and a supernatant outlet of the sludge through the concentration tank are respectively connected to a water inlet of the grid tank. After the sludge is concentrated, the sludge is lifted to a sludge dehydrator by a sludge pump for dehydration, the dried sludge is discharged into a sludge storage yard for further drying and then is transported to be treated, and filtrate and supernatant of a sludge concentration tank are returned to a grid tank for circulation treatment.
In the scheme, the method comprises the following steps: the acid adding device, the PAC adding device and the PAM adding device all comprise a dosing tank, a rotational flow type gas stirrer is arranged in the dosing tank, a metering pump and an automatic dosing electromagnetic valve are arranged on an outlet of the dosing tank, the metering pump is a mechanical diaphragm metering pump, a liquid level meter is further arranged in the dosing tank, and the liquid level in the dosing tank is conveniently monitored.
The beneficial effects of the utility model are as follows: the industrial wastewater of the steam repair plant is collected to a wastewater treatment station through a pipe network, and impurities and floating oil contained in the wastewater are removed through a grid pool and an inclined plate oil removal pool, so that the normal operation of subsequent treatment facilities is ensured; then flows into the regulating tank to regulate and homogenize the water quantity and the water quality, so that the stable operation of subsequent treatment facilities is ensured; lifting the wastewater to a wastewater comprehensive reaction device through a lifting pump to neutralize the pH of the wastewater, and simultaneously adding PAC and PAM to demulsify the emulsified oil in the wastewater; the effluent of the wastewater comprehensive reaction device enters an integrated dissolved air flotation device to remove emulsified oil and suspended matters, so that the subsequent treatment load is reduced; the sewage after air floatation enters a biochemical treatment part to further remove COD in the sewage, the sewage after hydrolytic acidification and contact oxidation enters a sedimentation tank to carry out solid-liquid separation, the supernatant of the sedimentation tank enters an intermediate water tank and is lifted to a filter through a lifting pump, and the sewage is treated by a multi-medium filter and an activated carbon filter in sequence to realize standard discharge; in a word, the system adopts an advanced sewage treatment process, has stronger bearing capacity to the fluctuation of raw water quantity and quality, reduces the production cost and the labor intensity, and can ensure that the yielding water stably reaches the required quality standard.
Drawings
Fig. 1 is a process flow diagram of the present utility model.
Detailed Description
As shown in fig. 1, an industrial wastewater treatment system of a steam repair plant comprises a wastewater treatment station for collecting industrial wastewater, wherein a water outlet of the wastewater treatment station is connected with a water inlet of a grille pool 1. The grids can effectively remove larger suspended substances in the wastewater, prevent subsequent equipment from being blocked and the like, and are designed to adopt one set of coarse grids and one set of fine grids respectively to intercept solid impurities in the wastewater.
The water outlet of the grating pool 1 is connected with the water inlet of the inclined plate oil separation pool 2, and the inclined plate oil separation pool 2 utilizes the incompatibility of oil and water, and the oil dispersed in the water is layered under the buoyancy effect, so that the separation of the floating oil and the water is realized.
The water outlet of the inclined plate oil separation tank 2 is connected with the water inlet of the regulating tank 3. In order to ensure the normal operation of subsequent treatment structures or equipment, the water quantity and the water quality of the wastewater need to be regulated, the water inflow of a common water quantity regulating tank 3 is gravity flow, the water outflow is lifted by a pump, and the effective water depth is generally 2-5 m.
The water outlet of the regulating tank 3 is connected with the water inlet of the wastewater comprehensive reaction device 4, and the wastewater comprehensive reaction device 4 is connected with an acid adding device, a PAC adding device and a PAM adding device. The raw water of the wastewater contains a large amount of alkaline substances and emulsified oil, and after the wastewater comes out of the regulating tank, the wastewater reacts with acid, PAC (PAC), PAM (PAM) and the like in a comprehensive wastewater reaction device to neutralize alkali in the wastewater; collecting colloid particles; the emulsified oil is decomposed, and conditions are provided for subsequent treatment.
The acid adding device, the PAC adding device and the PAM adding device all comprise a dosing tank, a rotational flow type gas stirrer is arranged in the dosing tank, a metering pump and an automatic dosing electromagnetic valve are arranged on an outlet of the dosing tank, the metering pump is a mechanical diaphragm metering pump, a liquid level meter is further arranged in the dosing tank, and the liquid level in the dosing tank is conveniently monitored.
The water outlet of the wastewater comprehensive reaction device 4 is connected with the water inlet of the integrated dissolved air floatation device 5, the water outlet of the integrated dissolved air floatation device 5 is connected with the water inlet of the hydrolytic acidification tank 6, the high-efficiency biological elastic filler in the tank is used as a bacterial carrier, the facultative microorganisms are used for converting insoluble organic matters in the wastewater into soluble organic matters, and the macromolecular organic matters are hydrolyzed into micromolecular organic matters, so that the subsequent O-level biological treatment tank is facilitated to be further oxidized and decomposed, and meanwhile, partial nitrification and denitrification can be carried out under the action of nitrifying bacteria through the returned nitrate nitrogen, so that ammonia nitrogen is removed.
The water outlet of the hydrolytic acidification tank 6 is connected with the water inlet of the contact oxidation tank 7, and under higher organic load, the sewage is subjected to biochemical degradation and adsorption under the joint participation of a large number of microbial communities of different species attached to the filler, so that various organic substances in the sewage are removed, and the organic substance content in the sewage is greatly reduced. Then under the condition of lower organic load, ammonia nitrogen in the sewage is degraded under the condition of sufficient oxygen by the action of nitrifying bacteria, and simultaneously the COD value in the sewage is reduced to a lower level, so that the sewage is purified.
The hydrolytic acidification tank 6+ contact oxidation tank 7 is treated into an A/O process.
The water outlet of the contact oxidation tank 7 is connected with the water inlet of the sedimentation tank 8, and the hydrolytic acidification and contact oxidation filler can peel off part of aged microorganisms to form suspended sludge, and the part of sludge and sewage enter the sedimentation tank together to carry out solid-liquid separation in the sedimentation tank.
The water outlet of the sedimentation tank 8 is connected with the water inlet of the middle water tank 9, the water outlet of the middle water tank 9 is connected with the water inlet of the multi-medium filter 10, the water outlet of the multi-medium filter 10 is connected with the water inlet of the activated carbon filter 11, and the water outlet of the activated carbon filter 11 is connected to a drain pipe or a drainage canal. The effluent of the sedimentation tank 8 enters an intermediate water tank, and is lifted to the equipment room by a lifting pump in the water tank to be further filtered by the two filters.
The sludge outlet of the integrated dissolved air flotation device 5, the sludge outlet of the multi-medium filter 10, the sludge outlet of the activated carbon filter 11 and the sludge outlet of the sedimentation tank 8 are respectively connected with the sludge concentration tank 12. The scum and the sludge deposited at the bottom of the integrated dissolved air flotation device 5 are discharged into a sludge concentration tank 12, the back flushing muddy water of the multi-medium filter 10 and the activated carbon filter 11 is discharged into the sludge concentration tank 12, and the sludge concentration treatment is carried out through the sludge concentration tank 12. The sludge outlet of the sedimentation tank 8 is also provided with a sludge return pipe connected to the contact oxidation tank 7, a part of sludge in the sedimentation tank 8 returns to the contact oxidation tank 7 for supplementing the sludge, and the residual sludge is discharged into a sludge concentration tank 12.
The sludge concentration tank 12 is connected with the sludge dewatering machine 13 through a sludge pump, and a filtrate outlet of the sludge dewatering machine 13 and a supernatant outlet of the sludge through the concentration tank 12 are respectively connected to a water inlet of the grille tank 1. After the sludge is concentrated, the sludge is lifted to a sludge dehydrator 13 by a sludge pump for dehydration, the dried sludge is discharged into a sludge storage yard for further drying and then is transported to be treated, and filtrate and supernatant of a sludge concentration tank 12 are returned to a grid tank 1 for circulation treatment.
The working process of the utility model is as follows: the industrial wastewater of the steam repair plant is collected to a wastewater treatment station through a pipe network, and impurities and floating oil contained in the wastewater are removed through a grid pool 1 and an inclined plate oil separation pool 2, so that the normal operation of subsequent treatment facilities is ensured; then flows into the regulating tank 3 to regulate and homogenize the water quantity and the water quality, so as to ensure the stable operation of subsequent treatment facilities; lifting the wastewater to a wastewater comprehensive reaction device 4 through a lifting pump to neutralize the pH of the wastewater, and simultaneously adding PAC and PAM to demulsify the emulsified oil in the wastewater; the effluent of the wastewater comprehensive reaction device 4 enters an integrated dissolved air flotation device 5 to remove emulsified oil and suspended matters, so that the subsequent treatment load is reduced; the sewage after air floatation enters a biochemical treatment part to further remove COD in the sewage, the sewage after hydrolytic acidification and contact oxidation enters a sedimentation tank 8 to carry out solid-liquid separation, the supernatant of the sedimentation tank 8 enters an intermediate water tank 9 and is lifted to a filter through a lifting pump, and the sewage is discharged after being treated by a multi-medium filter 10 and an activated carbon filter 11 in sequence.
The processing efficiency of each step of the processing system of the utility model is shown in the following table:
the quality of the effluent water can meet the requirements of the following table:
the effluent quality of the system meets the first-level discharge standard of Integrated wastewater discharge Standard (GB 8979-1996).
Claims (5)
1. The utility model provides a vapour repair factory industrial wastewater treatment system, includes the waste water treatment station that is used for collecting industrial wastewater, the delivery port of waste water treatment station links to each other with the water inlet in grid pond (1), the delivery port in grid pond (1) links to each other with the water inlet in swash plate oil removal pond (2), the delivery port in swash plate oil removal pond (2) links to each other with the water inlet in equalizing basin (3), its characterized in that: the water outlet of equalizing basin (3) links to each other with the water inlet of waste water integrated reaction device (4), be connected with sour throwing device, PAC throwing device and PAM throwing device on waste water integrated reaction device (4), the water outlet of waste water integrated reaction device (4) links to each other with the water inlet of integral type dissolved air flotation device (5), the water outlet of integral type dissolved air flotation device (5) links to each other with the water inlet of hydrolysis acidification pond (6), the water outlet of hydrolysis acidification pond (6) links to each other with the water inlet of contact oxidation pond (7), the water outlet of contact oxidation pond (7) links to each other with the water inlet of sedimentation tank (8), the water outlet of sedimentation tank (8) links to each other with the water inlet of intermediate tank (9), the water outlet of intermediate tank (9) links to each other with the water inlet of multi-media filter (10), the water outlet of multi-media filter (10) links to each other with the water inlet of active carbon filter (11), the water outlet of active carbon filter (11) is connected to drain pipe or water drainage canal.
2. The automotive repair plant industrial wastewater treatment system according to claim 1, wherein: the sludge outlet of the integrated dissolved air flotation device (5), the sludge outlet of the multi-medium filter (10), the sludge outlet of the activated carbon filter (11) and the sludge outlet of the sedimentation tank (8) are respectively connected with the sludge concentration tank (12).
3. The automotive repair plant industrial wastewater treatment system according to claim 2, wherein: the sludge outlet of the sedimentation tank (8) is also provided with a sludge return pipe connected to the contact oxidation tank (7).
4. The automotive repair plant industrial wastewater treatment system according to claim 2, wherein: the sludge concentration tank (12) is connected with the sludge dewatering machine (13) through a sludge pump, and a filtrate outlet of the sludge dewatering machine (13) and a supernatant outlet of the sludge through the concentration tank (12) are respectively connected to a water inlet of the grid tank (1).
5. The automotive repair plant industrial wastewater treatment system according to claim 1, wherein: the acid adding device, the PAC adding device and the PAM adding device all comprise a dosing tank, a rotational flow type gas stirrer is arranged in the dosing tank, a metering pump and an automatic dosing electromagnetic valve are arranged on an outlet of the dosing tank, and the metering pump is a mechanical diaphragm metering pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978287.6U CN220449976U (en) | 2023-07-26 | 2023-07-26 | Industrial wastewater treatment system of steam repair plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978287.6U CN220449976U (en) | 2023-07-26 | 2023-07-26 | Industrial wastewater treatment system of steam repair plant |
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| Publication Number | Publication Date |
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| CN220449976U true CN220449976U (en) | 2024-02-06 |
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ID=89735543
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321978287.6U Active CN220449976U (en) | 2023-07-26 | 2023-07-26 | Industrial wastewater treatment system of steam repair plant |
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| Country | Link |
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| CN (1) | CN220449976U (en) |
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2023
- 2023-07-26 CN CN202321978287.6U patent/CN220449976U/en active Active
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