CN112707594A - Treatment system and treatment method for automobile city wastewater - Google Patents
Treatment system and treatment method for automobile city wastewater Download PDFInfo
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- CN112707594A CN112707594A CN202011559573.XA CN202011559573A CN112707594A CN 112707594 A CN112707594 A CN 112707594A CN 202011559573 A CN202011559573 A CN 202011559573A CN 112707594 A CN112707594 A CN 112707594A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 41
- 239000011574 phosphorus Substances 0.000 claims abstract description 41
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 17
- 231100000719 pollutant Toxicity 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 17
- 238000005189 flocculation Methods 0.000 claims abstract description 7
- 230000016615 flocculation Effects 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 238000004062 sedimentation Methods 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000005188 flotation Methods 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 10
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 3
- 238000009287 sand filtration Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 abstract description 11
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000003311 flocculating effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000003209 petroleum derivative Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- 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
Abstract
The invention provides a treatment system and a method for automobile city wastewater, wherein the treatment system comprises an air floatation device, a chemical phosphorus removal device and a biochemical device which are sequentially connected; after the wastewater is subjected to flocculation and precipitation treatment by the air floatation device, the wastewater is sent to a chemical phosphorus removal device for phosphorus removal treatment, and finally biochemical treatment is carried out in the biochemical device. The treatment system can stably remove petroleum and total phosphorus in water and synchronously remove suspended matters, partial COD and the like in the water through phosphorus removal and oil removal, has higher treatment efficiency, has certain treatment capacity on other related pollutants in a water body, has high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the aim of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line.
Description
Technical Field
The invention relates to the field of treatment of wastewater in an automobile city, in particular to a treatment system and a treatment method of wastewater in the automobile city.
Background
With China addingSince the world trade organization, foreign automobile enterprises enter the Chinese market successively, the development of the automobile industry in China goes through three stages of construction, growth and high-speed development, the automobile industry is rapidly and well developed in the current stage, but the automobile industry brings convenience to people along with the high-speed development of the automobile industry, and also brings serious environmental problems2+、Ni2+The main pollutants contained in the automobile city wastewater comprise COD, phosphate, petroleum and Zn2+、Ni2+And SS, etc., the wastewater in the automobile city has complex water quality components and belongs to wastewater difficult to biodegrade, and the wastewater can be stably discharged after reaching the standard after being pretreated by a pretreatment system and then being biologically treated.
At present, the conventional pretreatment of the wastewater in the automobile city only uses an oil separation tank for pretreatment, but the treatment process is simple, and only a small amount of floating oil can be removed to remove phosphate and Zn2+And the high-concentration phosphate cannot be effectively removed until the effluent reaches the standard and is stable basically when the phosphate enters a biochemical system.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a treatment system for wastewater in an automobile city, which can stably remove petroleum and total phosphorus in water and synchronously remove suspended matters, partial COD (chemical oxygen demand) and the like in water through phosphorus removal and oil removal, has high treatment efficiency, has certain treatment capacity for other related pollutants in a water body, high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the purpose of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line, so that the treatment system is worthy of wide popularization and application.
The second purpose of the invention is to provide a wastewater treatment method of the treatment system, which has the advantages of simple operation, mild operation conditions, safety and environmental protection.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the invention provides a treatment system for automobile city wastewater, which comprises an air floatation device, a chemical phosphorus removal device and a biochemical device which are sequentially connected; after the wastewater is subjected to flocculation and precipitation treatment by the air floatation device, the wastewater is sent to a chemical phosphorus removal device for phosphorus removal treatment, and finally biochemical treatment is carried out in the biochemical device.
The treatment system for the wastewater in the automobile city gets rid of the defect that the prior treatment system for the wastewater in the automobile city can only simply treat a small amount of floating oil, can stably operate to remove petroleum and total phosphorus in water, synchronously remove suspended matters, partial COD (chemical oxygen demand) and the like in the water, has high treatment efficiency, has certain treatment capacity on other related pollutants in a water body, has high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the aim of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line, so the treatment system is worthy of wide popularization and application.
Preferably, as a further implementable scheme, the air flotation device comprises an air flotation tank, the air flotation tank enables pollutants to float upwards by adding a medicament, the floating pollutants are collected by the slag scraping groove and sent to the sludge sedimentation tank, and clear water discharged from the air flotation tank is sent to the chemical phosphorus removal device.
The method comprises the steps of firstly detecting inlet petroleum, adjusting a dosing metering device according to the dosing amount corresponding to a dosing curve confirmed in a laboratory lab, adding PAC (polyaluminium chloride) and PAM (polyacrylamide) into a water inlet pipeline mixer of an air floatation tank, and adding a surfactant into a water distribution port of the air floatation tank. Flocculation, help and congeal medicament and raw water and fully mix in the pipe-line mixer, mix rapidly with the tiny sediment that the reaction generated in the turbulent flow of rivers, pass baffle lower part entering air supporting pond anterior segment, the air supporting anterior segment is through dissolving the gas water pump, it forms highly dispersed tiny bubble as the pollutant of carrier adhesion in the waste water to dissolve the gas releaser, make its buoyancy be greater than gravity and come-up resistance, thereby make the pollutant come-up to the surface of water formation foam, foam stability is not taking place the secondary breakage under surfactant's effect, the adsorbed pollutant can not be dissolved in aqueous once more. The surface scum is scraped once every 15 minutes through a mud scraper, collected to a sludge sedimentation tank at the lower part through a scum scraping groove, and is pumped into a sludge storage tank for gravity concentration after further concentration.
Preferably, as a further implementable scheme, the chemical phosphorus removal device comprises a horizontal flow sedimentation tank, and clear water from the air floatation tank is sent to the horizontal flow sedimentation tank to remove suspended matters, phosphorus and partial organic matters in the water.
Supernatant of the air flotation device flows into a subsequent horizontal sedimentation tank through a water outlet channel, phosphorus is further removed by adding polyferric sulfate and PAM, a mud bucket is arranged at the bottom, phosphorus-rich sludge is periodically discharged, suspended matters, phosphorus and partial organic matters in water are further removed, the operation load of a subsequent biochemical treatment section is greatly reduced, and finally, the indexes of petroleum and total phosphorus in effluent are continuously, stably and qualified.
Preferably, as a further implementable scheme, the chemical phosphorus removal device further comprises a slow reaction tank and a fast reaction tank, wherein the slow reaction tank and the fast reaction tank are arranged before the horizontal sedimentation tank for pre-reaction sedimentation of wastewater.
Preferably, as a further implementable solution, the biochemical device includes an a/O tank and a secondary sedimentation tank to which sedimentation after anaerobic/aerobic treatment in the a/O tank is passed. The A/O tank is used for removing organic matters in water, has a certain denitrification and dephosphorization function besides degrading organic pollutants, and uses an anaerobic hydrolysis technology as pretreatment of activated sludge.
Preferably, as a further implementable scheme, the secondary sedimentation tank is connected with a filtering tank, and effluent of the secondary sedimentation tank is sent to the filtering tank for sand filtration. In the sand filtering process, quartz sand or active carbon is mainly added to filter the wastewater.
The invention provides a system for treating automobile city wastewater and a corresponding treatment method, and the method specifically comprises the following steps:
the automobile city wastewater is subjected to flocculation precipitation and dephosphorization treatment in sequence and then is subjected to biochemical treatment.
The treatment method is simple in method, easy to implement and short in flow, and can remarkably improve the treatment effect of the wastewater.
Compared with the prior art, the invention has the beneficial effects that:
(1) the treatment system can stably remove petroleum and total phosphorus in water and synchronously remove suspended matters, partial COD and the like in the water through phosphorus removal and oil removal, has higher treatment efficiency, has certain treatment capacity on other related pollutants in a water body, has high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the aim of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line, so the treatment system is worthy of wide popularization and application.
(2) The wastewater treatment method is simple, easy to implement and short in flow, and can remarkably improve the wastewater treatment effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a flowchart showing the operation of a method for treating wastewater in an automobile city according to example 1 of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The treatment method of the automobile city wastewater comprises the following steps:
introducing wastewater generated by a certain car city into a certain sewage treatment station, filtering impurities by using a grid, and then introducing the wastewater into a lifting well, an air flotation tank, a coagulating sedimentation tank, a biochemical treatment tank, a secondary sedimentation tank and a multi-media filter for urban green land irrigation after disinfection. The air floatation device comprises an air floatation tank, a slag scraping tank and a sludge sedimentation tank.
The method comprises the steps of firstly detecting inlet petroleum, adjusting a dosing metering device according to the dosing amount corresponding to a dosing curve confirmed in a laboratory lab, adding PAC (polyaluminium chloride) and PAM (polyacrylamide) into a water inlet pipeline mixer of an air floatation tank, and adding a surfactant into a water distribution port of the air floatation tank.
Flocculation, help and congeal medicament and raw water and fully mix in the pipe-line mixer, mix rapidly with the tiny sediment that the reaction generated in the turbulent flow of rivers, pass baffle lower part entering air supporting pond anterior segment, the air supporting anterior segment is through dissolving the gas water pump, it forms highly dispersed tiny bubble as the pollutant of carrier adhesion in the waste water to dissolve the gas releaser, make its buoyancy be greater than gravity and come-up resistance, thereby make the pollutant come-up to the surface of water formation foam, foam stability is not taking place the secondary breakage under surfactant's effect, the adsorbed pollutant can not be dissolved in aqueous once more.
The surface scum is scraped once every 15 minutes through a mud scraper, collected to a sludge sedimentation tank at the lower part through a scum scraping groove, and is pumped into a sludge storage tank for gravity concentration after further concentration.
Supernatant of the air flotation device flows into a horizontal sedimentation tank in the chemical phosphorus removal device through a water outlet channel, phosphorus is further removed by adding polyferric sulfate and PAM, a mud bucket is arranged at the bottom, phosphorus-rich sludge is periodically discharged, suspended matters, phosphorus and partial organic matters in water are further removed, and pre-reaction sedimentation can be performed on wastewater firstly through a slow reaction tank and a fast reaction tank. Greatly reduces the operation load of the treatment working section of the subsequent biochemical device,
the effluent water which passes through the chemical phosphorus removal device goes to a biochemical device for treatment, passes through an A/O (anoxic/oxic) tank and a secondary sedimentation tank in sequence, is filtered by a filter tank filled with quartz sand and activated carbon, and then directly goes out, so that the petroleum and total phosphorus indexes of the effluent water are continuously, stably and qualified.
The specific operation flow is shown in fig. 1, and the water quality of the effluent is shown in table 1 below, which is an index of the effluent after the treatment of example 1 for 3 days.
TABLE 1 concrete Water quality index
| Day one | COD(mg/L) | Total phosphorus (mg/L) | Petroleum products (mg/L) | SS(mg/L) |
| Inflow water | 1260 | 14 | 2.21 | 386 |
| Water outlet after air floatation | 886 | 9.21 | 1.04 | 65 |
| Flocculating settling effluent | 540 | 1.54 | 0.89 | 30 |
| Total water discharge | 25 | 0.042 | 0.82 | 8 |
| The next day | COD(mg/L) | Total phosphorus (mg/L) | Petroleum products (mg/L) | SS(mg/L) |
| Inflow water | 1440 | 17.4 | 2.25 | 320 |
| Water outlet after air floatation | 820 | 8.68 | 0.85 | 60 |
| Flocculating settling effluent | 579 | 1.25 | 0.75 | 24 |
| Total water discharge | 18 | 0.057 | 0.52 | 5 |
| The third day | COD(mg/L) | Total phosphorus (mg/L) | Petroleum products(mg/L) | SS(mg/L) |
| Inflow water | 1540 | 13.4 | 2.15 | 320 |
| Water outlet after air floatation | 870 | 7.68 | 0.75 | 60 |
| Flocculating settling effluent | 529 | 1.05 | 0.67 | 24 |
| Total water discharge | 27 | 0.042 | 0.47 | 5 |
The results in the table 1 show that the phosphorus and oil removal are performed by the scheme of the invention, and the sewage plant is selected to continuously operate for 3 days for monitoring and analysis, so that the process can stably operate to remove petroleum and total phosphorus in water, synchronously remove suspended matters, partial COD (chemical oxygen demand) and the like in water, has high treatment efficiency, has certain treatment capacity on other related pollutants in the water body, has high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the purpose of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line.
Compared with the prior art, the invention has the beneficial effects that:
(1) the treatment system can stably remove petroleum and total phosphorus in water and synchronously remove suspended matters, partial COD and the like in the water through phosphorus removal and oil removal, has higher treatment efficiency, has certain treatment capacity on other related pollutants in a water body, has high economy and strong adjustability, can meet the effective treatment of complex inlet water, achieves the aim of effective biochemical treatment, and finally ensures the stable and qualified outlet water of the whole process line, so the treatment system is worthy of wide popularization and application.
(2) The wastewater treatment method is simple, easy to implement and short in flow, and can remarkably improve the wastewater treatment effect.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (7)
1. A treatment system for automobile city wastewater is characterized by comprising an air floatation device, a chemical phosphorus removal device and a biochemical device which are sequentially connected; after the wastewater is subjected to flocculation and precipitation treatment by the air floatation device, the wastewater is sent to a chemical phosphorus removal device for phosphorus removal treatment, and finally biochemical treatment is carried out in the biochemical device.
2. The treatment system of claim 1, wherein the flotation device comprises a flotation tank, the flotation tank enables pollutants to float upwards by adding a medicament, the floating pollutants are collected by a slag scraping tank and sent to a sludge sedimentation tank, and clear water from the flotation tank is sent to the chemical phosphorus removal device.
3. The treatment system of claim 2, wherein the chemical phosphorus removal device comprises a horizontal sedimentation tank, and clear water from the air flotation tank is sent to the horizontal sedimentation tank to remove suspended matters, phosphorus and partial organic matters in the water.
4. The treatment system of claim 3, wherein the chemical phosphorus removal device further comprises a slow reaction tank and a fast reaction tank, the slow reaction tank and the fast reaction tank are arranged before the horizontal sedimentation tank for pre-reaction sedimentation of wastewater.
5. The treatment system according to claim 4, wherein the biochemical apparatus comprises an A/O tank and a secondary sedimentation tank to which sedimentation after anaerobic/aerobic treatment in the A/O tank is passed.
6. The treatment system of claim 5, wherein a filter tank is connected to the secondary sedimentation tank, and effluent of the secondary sedimentation tank goes to the filter tank for sand filtration.
7. The method for treating a car city wastewater treatment system according to any one of claims 1 to 6, comprising the steps of:
the automobile city wastewater is subjected to flocculation precipitation and dephosphorization treatment in sequence and then is subjected to biochemical treatment.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038382A (en) * | 1999-07-30 | 2001-02-13 | Kawasaki City | Method for removing phosphorus in waste water |
| CN105293815A (en) * | 2014-07-23 | 2016-02-03 | 金乡县大蒜研究所 | Method for treating high-concentration sewage produced from garlic processing |
| CN110526476A (en) * | 2019-09-25 | 2019-12-03 | 北京华电利源科技有限公司 | The method for handling comprehensive heavy metal wastewater thereby |
| CN111943461A (en) * | 2020-09-10 | 2020-11-17 | 苏州苏沃特环境科技有限公司 | Electrolytic capacitor and electrode foil wastewater treatment method and treatment system |
-
2020
- 2020-12-25 CN CN202011559573.XA patent/CN112707594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038382A (en) * | 1999-07-30 | 2001-02-13 | Kawasaki City | Method for removing phosphorus in waste water |
| CN105293815A (en) * | 2014-07-23 | 2016-02-03 | 金乡县大蒜研究所 | Method for treating high-concentration sewage produced from garlic processing |
| CN110526476A (en) * | 2019-09-25 | 2019-12-03 | 北京华电利源科技有限公司 | The method for handling comprehensive heavy metal wastewater thereby |
| CN111943461A (en) * | 2020-09-10 | 2020-11-17 | 苏州苏沃特环境科技有限公司 | Electrolytic capacitor and electrode foil wastewater treatment method and treatment system |
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