CN105174661B - A kind of acid washing phosphorization waste water treatment process - Google Patents

A kind of acid washing phosphorization waste water treatment process Download PDF

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CN105174661B
CN105174661B CN201510721292.2A CN201510721292A CN105174661B CN 105174661 B CN105174661 B CN 105174661B CN 201510721292 A CN201510721292 A CN 201510721292A CN 105174661 B CN105174661 B CN 105174661B
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waste water
acid washing
washing phosphorization
sent
treatment process
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CN105174661A (en
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和晓刚
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Hongjiang Jinyi Water Treatment Co., Ltd.
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Taicang Dongneng Environmental Protection Equipment Co Ltd
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  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Activated Sludge Processes (AREA)

Abstract

The present invention provides a kind of acid washing phosphorization waste water treatment process, comprises the following steps:1) acid washing phosphorization waste water is tentatively filtered through grid;2) the acid washing phosphorization waste water after preliminary filtering is sent into homogeneous regulating reservoir;3) the acid washing phosphorization waste water after homogenization is sent into by hybrid reaction clarifier by elevator pump;4) waste water that blended reaction clarifier is isolated delivers to reactor for hydrolysis and acidification through water pump and carries out acidification;5) waste water after acidification is sent into anaerobic pond;6) waste water after anaerobic pond is handled is sent into Aerobic Pond;7) waste water after Aerobic Pond processing enters flotation tank;8) waste water after flotation tank is handled is sent into mechanical filter unit, and clear water storage pool is sent into after removing the suspension in water removal.The technique sets up anaerobic pond and Aerobic Pond, handles the phosphorus containg substances and organic matter in acid washing phosphorization waste water using A/O methods, high treating effect, cost is low, environmentally friendly.

Description

A kind of acid washing phosphorization waste water treatment process
Technical field
The present invention relates to a kind of acid washing phosphorization waste water treatment process.
Background technology
Phosphorating treatment is a kind of chemical reprocessing technique to metal material and its article surface progress.Through parkerized Metal material and its product surface form dipped type phosphate film layer, and the film layer and metallic matrix have good binding ability, resistance to Mill property and the adhesive ability to coating, therefore, the industry such as machinery, steel is all using phosphorization treatment technology come production machinery part Overcoat.Phosphorization treatment process generally comprise alkali cleaning oil removing, hot water rinsing, cold rinse, acid pickling and rust removing, secondary cold rinse and Several steps such as phosphatization.It is main to produce alkali cleaning emulsifying waste water, poaching wastewater, pickle liquor and etching waste liquor etc. during it Various wastewater.
In phosphorized waste water in addition to containing substantial amounts of phosphate, zinc ion, acid-base material and organic matter, according to production technology not Together, it is sometimes also multiple containing the pollutant such as heavy metal and surfactant, compositions such as a certain amount of nickel ion, copper ion or lead ions Miscellaneous, intractability is larger.Phosphate discharge capacity is big, mainly exists in the form of the inorganic salts such as zinc dihydrogen phosphate, in addition with The pollutants such as COD, petroleum-type and suspension.
Currently the main flow handling process in engineering practice of phosphorized waste water is:Chemical precipitation/coagulation air-float/sand filtration/work Property charcoal absorption, complex process, dosage is more, and operating cost is high.
On the other hand, the country is primarily present following patent document at present:
Patent publication No.:CN104671493A, a kind of acid washing phosphorization waste water medicament neutralisation treatment technique is disclosed, is by mixing Close reaction tank, sedimentation basin, mechanical dehydration or sludge drying bed, detection means composition.The invention has the advantages that hybrid reaction Pond mixes waste water and nertralizer, is fully reacted.Reacted insoluble matter precipitates in sedimentation basin.Sludge under precipitation enters Row mechanical dehydration or sludge drying.Device detects whether after reaching discharge standard water after processing after testing, discharges or locates again Reason.However, the patent processing method is excessively simple, neutralisation treatment, place are carried out to acid washing phosphorization waste water merely by nertralizer It is not very obvious to manage effect.
The content of the invention
To solve above-mentioned problem, it is an object of the invention to provide a kind of acid washing phosphorization waste water treatment process, institute State technique and set up anaerobic pond and Aerobic Pond, the phosphorus containg substances and organic matter in acid washing phosphorization waste water, processing effect are handled using A/O methods Fruit is good, and cost is low, environmentally friendly.
To reach above-mentioned purpose, the technical scheme is that:
A kind of acid washing phosphorization waste water treatment process, comprises the following steps:
1) acid washing phosphorization waste water is tentatively filtered off except useless impurities in water through grid;
2) the acid washing phosphorization waste water after preliminary filtering is sent into homogeneous regulating reservoir, acid washing phosphorization waste water is obtained homogeneous;
3) the acid washing phosphorization waste water after homogenization is sent into by hybrid reaction clarifier by elevator pump, and passes through dosing pump Coagulant is added into the hybrid reaction clarifier so that the acid washing phosphorization waste water is consolidated in hybrid reaction clarifier Liquid separates, and adds alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
4) waste water that blended reaction clarifier is isolated delivers to reactor for hydrolysis and acidification through water pump and carries out acidification;
5) waste water after acidification is sent into anaerobic pond, the denitrifying bacterium in anaerobic pond carries out dephosphorization treatment to waste water;
6) waste water after anaerobic pond is handled is sent into Aerobic Pond, in Aerobic Pond in the presence of organic matter degradation bacteria, drop Solve the organic matter in waste water;
7) waste water after Aerobic Pond processing enters flotation tank, removes the grease in waste water, reduces COD;
8) waste water after flotation tank is handled is sent into mechanical filter unit, and clear water storage is sent into after removing the suspension in water removal Pond.
Further, residence time of the acid washing phosphorization waste water in homogeneous regulating reservoir is 2 ~ 3h in step 2).
In addition, coagulant described in step 3) is in aluminum sulfate, alchlor, ferrous sulfate, calcium hydroxide and magnesium carbonate One kind.
Separately have, coagulant described in step 3) is calcium hydroxide.
Again, the residence time in hybrid reaction clarifier of acid washing phosphorization waste water described in step 3) is 0.5 ~ 1h.
Further, pH value is 10 ~ 11 in step 3).
And sanitary sewage residence time in Aerobic Pond is 0.3 ~ 0.5h in step 6).
In addition, DO is 2 ~ 4mg/L in Aerobic Pond described in step 6).
Again, YDT type elastic solid fillers are provided with Aerobic Pond described in step 6), adhered on YDT type elastic solid fillers By microorganism, one layer of microorganism film layer is formed.
The beneficial effects of the present invention are:
The technique uses A/O method handling process, combine anaerobism, it is aerobic the advantages of, effectively acid washing phosphorization can be given up Phosphorus and organic matter in water are explained and removed, and the water outlet pH value after the completion of processing is 6 ~ 8, meets discharging standards, goes out COD in watercrContent≤35mg/L, hence it is evident that less than the 100mg/L in national standard, phosphorus content is 0.4 ~ 0.5mg/L in water outlet, place Reason effect is good, and cost is low, environmentally friendly.
Embodiment
Following examples are used to illustrate the present invention, but can not be used for limiting the scope of the present invention.The reality used in embodiment The condition of applying can be for further adjustments according to the condition of producer, and unaccounted implementation condition is usually conventional laboratory conditions.
A kind of acid washing phosphorization waste water treatment process provided by the present invention, comprises the following steps:
1) acid washing phosphorization waste water is tentatively filtered off except useless impurities in water through grid;
2) the acid washing phosphorization waste water after preliminary filtering is sent into homogeneous regulating reservoir, acid washing phosphorization waste water is obtained homogeneous;
3) the acid washing phosphorization waste water after homogenization is sent into by hybrid reaction clarifier by elevator pump, and passes through dosing pump Coagulant is added into the hybrid reaction clarifier so that the acid washing phosphorization waste water is consolidated in hybrid reaction clarifier Liquid separates, and adds alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
4) waste water that blended reaction clarifier is isolated delivers to reactor for hydrolysis and acidification through water pump and carries out acidification;
5) waste water after acidification is sent into anaerobic pond, the denitrifying bacterium in anaerobic pond carries out dephosphorization treatment to waste water;
6) waste water after anaerobic pond is handled is sent into Aerobic Pond, in Aerobic Pond in the presence of organic matter degradation bacteria, drop Solve the organic matter in waste water;
7) waste water after Aerobic Pond processing enters flotation tank, removes the grease in waste water, reduces COD;
8) waste water after flotation tank is handled is sent into mechanical filter unit, and clear water storage is sent into after removing the suspension in water removal Pond.
Further, residence time of the acid washing phosphorization waste water in homogeneous regulating reservoir is 2 ~ 3h in step 2).
In addition, coagulant described in step 3) is in aluminum sulfate, alchlor, ferrous sulfate, calcium hydroxide and magnesium carbonate One kind.
Separately have, coagulant described in step 3) is calcium hydroxide.
Again, the residence time in hybrid reaction clarifier of acid washing phosphorization waste water described in step 3) is 0.5 ~ 1h.
Further, pH value is 10 ~ 11 in step 3).
And sanitary sewage residence time in Aerobic Pond is 0.3 ~ 0.5h in step 6).
In addition, DO is 2 ~ 4mg/L in Aerobic Pond described in step 6).
Again, YDT type elastic solid fillers are provided with Aerobic Pond described in step 6), adhered on YDT type elastic solid fillers By microorganism, one layer of microorganism film layer is formed.
A kind of acid washing phosphorization waste water treatment process provided by the present invention, using A/O method handling process, combine anaerobism, The advantages of aerobic, effectively the phosphorus in acid washing phosphorization waste water and organic matter can be explained and removed, going out after the completion of processing Water pH value is 6 ~ 8, meets discharging standards, COD in water outletcrContent≤35mg/L, hence it is evident that less than in national standard 100mg/L, phosphorus content is 0.4 ~ 0.5mg/L in water outlet, and high treating effect, cost is low, environmentally friendly.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although with reference to compared with The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention Scheme is modified or equivalent substitution, and without departing from the scope of technical solution of the present invention, it all should cover the power in the present invention In sharp claimed range.

Claims (8)

1. a kind of acid washing phosphorization waste water treatment process, it is characterised in that comprise the following steps:
1) acid washing phosphorization waste water is tentatively filtered off except useless impurities in water through grid;
2) the acid washing phosphorization waste water after preliminary filtering is sent into homogeneous regulating reservoir, acid washing phosphorization waste water is obtained homogeneous;
3) the acid washing phosphorization waste water after homogenization is sent into by hybrid reaction clarifier by elevator pump, and by dosing pump to institute State in hybrid reaction clarifier and add coagulant so that the acid washing phosphorization waste water carries out solid-liquid point in hybrid reaction clarifier From, and add alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
4) waste water that blended reaction clarifier is isolated delivers to reactor for hydrolysis and acidification through water pump and carries out acidification;
5) waste water after acidification is sent into anaerobic pond, the denitrifying bacterium in anaerobic pond carries out dephosphorization treatment to waste water;
6) waste water after anaerobic pond is handled is sent into Aerobic Pond, and in Aerobic Pond in the presence of organic matter degradation bacteria, degraded is useless Organic matter in water;
7) waste water after Aerobic Pond processing enters flotation tank, removes the grease in waste water, reduces COD;
8) waste water after flotation tank is handled is sent into mechanical filter unit, and clear water storage pool is sent into after removing the suspension in water removal;
YDT type elastic solid fillers are provided with Aerobic Pond described in step 6), attachment is by micro- life on YDT type elastic solid fillers Thing, form one layer of microorganism film layer.
2. according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterised in that pickling phosphorus in step 2) It is 2 ~ 3h to change residence time of the waste water in homogeneous regulating reservoir.
3. according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterised in that mixed described in step 3) The solidifying one kind of agent in aluminum sulfate, alchlor, ferrous sulfate, calcium hydroxide and magnesium carbonate.
4. according to a kind of acid washing phosphorization waste water treatment process described in claim 2, it is characterised in that mixed described in step 3) Solidifying agent is calcium hydroxide.
5. according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterised in that sour described in step 3) It is 0.5 ~ 1h to wash phosphorized waste water residence time in hybrid reaction clarifier.
6. according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterised in that pH value is in step 3) 10~11。
7. according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterised in that life is dirty in step 6) Water residence time in Aerobic Pond is 0.3 ~ 0.5h.
8. a kind of acid washing phosphorization waste water treatment process according to claim 1, it is characterised in that aerobic described in step 6) DO is 2 ~ 4mg/L in pond.
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Publication number Priority date Publication date Assignee Title
CN106116022B (en) * 2016-07-14 2019-02-01 胡大苇 A kind of ammonia nitrogen processing method in acid waste water containing heavy metal
CN106186415A (en) * 2016-07-15 2016-12-07 舒城联科表面处理有限公司 A kind of phosphorus removing method of the phosphorus-containing wastewater produced in anodic oxidation surface with chemical polishing technology
CN106673304A (en) * 2016-12-19 2017-05-17 徐州工程学院 Device for treating phosphatized wastewater through biological reaction and working method thereof
CN109694144A (en) * 2017-10-23 2019-04-30 宜兴市联丰化工机械有限公司 A kind of end socket phosphatized wastewater treatment process
CN109694143A (en) * 2017-10-23 2019-04-30 宜兴市联丰化工机械有限公司 A kind of end socket production wastewater treatment process
CN110902963B (en) * 2019-12-10 2022-06-24 九江天赐高新材料有限公司 Treatment method of alkali-soluble polymer-containing wastewater
CN111153557A (en) * 2020-01-20 2020-05-15 上海泓济环保科技股份有限公司 Integrated treatment device and treatment process for pickling and phosphating production wastewater
CN113387511A (en) * 2021-06-17 2021-09-14 南京工大膜应用技术研究所有限公司 Zero discharge device and process flow for phosphating wastewater
CN117602774A (en) * 2023-12-27 2024-02-27 广东拓致环境科技有限公司 Pickling phosphating wastewater treatment method and system

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CN103058467A (en) * 2013-01-22 2013-04-24 富民宝地纸业有限公司 Water paper paper-making wastewater efficient treatment and comprehensive recycling method and device
CN103553275A (en) * 2013-11-14 2014-02-05 安徽省绿巨人环境技术有限公司 Treatment process of wave-soldering cleaning wastewater
CN104291522A (en) * 2014-09-16 2015-01-21 天津千鑫有色金属制品有限公司 Method for treating industrial wastewater

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CN101708923A (en) * 2009-11-16 2010-05-19 同济大学 Denitrifying phosphorus and nitrogen removal method for wastewater with low carbon-phosphorus ratio
CN102276061A (en) * 2011-05-18 2011-12-14 贾立敏 Hydrolysis and denitrification system and method
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Effective date of registration: 20190325

Address after: 418200 Hongjiang Industrial Park No. 27, Huaihua City, Hunan Province

Patentee after: Hongjiang Jinyi Water Treatment Co., Ltd.

Address before: Room 618, Building A, Nanjiulong Avenue, North Ring Road, Fuqiao Town, Taicang City, Suzhou City, Jiangsu Province

Patentee before: Taicang Dongneng Environmental Protection Equipment Co.,Ltd.

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Denomination of invention: A treatment process for pickling and Phosphating Wastewater

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