CN105174661A - Acid-pickled phosphatized wastewater treatment process - Google Patents
Acid-pickled phosphatized wastewater treatment process Download PDFInfo
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- CN105174661A CN105174661A CN201510721292.2A CN201510721292A CN105174661A CN 105174661 A CN105174661 A CN 105174661A CN 201510721292 A CN201510721292 A CN 201510721292A CN 105174661 A CN105174661 A CN 105174661A
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Abstract
The invention provides an acid-pickled phosphatized wastewater treatment process which comprises the first step of conducting preliminary filtration on acid-pickled phosphatized wastewater through gratings, the second step of sending the acid-pickled phosphatized wastewater subjected to preliminary filtration into a homogeneous adjusting tank, the third step of sending the acid-pickled phosphatized wastewater subjected to homogeneous treatment into a mixed reaction defecator through a lift pump, the fourth step of sending the wastewater separated in the mixed reaction defecator to a hydrolytic acidification reactor through a water pump for acidizing treatment, the fifth step of sending the wastewater subjected to acidizing treatment into an anaerobic tank, the sixth step of sending the wastewater treated in the anaerobic tank into an aerobic tank, the seventh step of sending the wastewater treated in the aerobic tank into an air flotation tank, and the eighth step of sending the wastewater treated in the air flotation tank into a mechanical filtration device, removing suspended matter in water and then sending the water into a fresh water storage pool. According to the process, the anaerobic tank and the aerobic tank are arranged additionally, and phosphorus-contained matter and organic matter in the acid-pickled phosphatized wastewater are treated through an A/O method; hence, the treatment effect is good, cost is low, and the process is friendly to the environment.
Description
Technical field
The present invention relates to a kind of acid washing phosphorization waste water treatment process.
Background technology
Bonderizing is the one chemistry reprocessing technique carried out metallic substance and article surface thereof.Dipped type phosphoric acid salt rete is formed through parkerized metallic substance and product surface thereof, this rete and metallic matrix have good binding ability, wear resistance and the adhesive ability to coating, therefore, the industry such as machinery, iron and steel all adopts phosphorization treatment technology to carry out the protective layer of production machinery part.Phosphorization treatment process generally comprises several steps such as alkali cleaning oil removing, hot water rinsing, cold rinse, acid pickling and rust removing, secondary cold rinse and phosphatization.In its process, the various wastewater such as main generation alkali cleaning emulsifying waste water, poaching wastewater, spent pickle liquor and etching waste liquor.
Except containing except a large amount of phosphoric acid salt, zine ion, acid-base material and organism in phosphorized waste water, different according to production technique, sometimes also containing pollutents such as heavy metal and tensio-active agent such as a certain amount of nickel ion, cupric ion or lead ions, complicated component, intractability is larger.Phosphoric acid salt quantity discharged is large, mainly exists with the form of the inorganic salts such as primary zinc phosphate, also has the pollutents such as COD, petroleum-type and suspended substance in addition.
The main flow treatment process in engineering practice of current phosphorized waste water is: chemical precipitation/coagulation air-float/sand filtration/charcoal absorption, complex process, dosage is many, and working cost is high.
To this, the following patent documentation of current domestic main existence:
Patent publication No.: CN104671493A, discloses a kind of acid washing phosphorization waste water medicament neutralizing treatment technique, is made up of mixed reaction pond, settling tank, mechanical dehydration or sludge drying bed, proofing unit.The invention has the beneficial effects as follows, mixed reaction pond, by waste water and neutralizing agent mixing, fully reacts.Reacted insolubles precipitates in settling tank.Mud under precipitation carries out mechanical dehydration or sludge drying.Water after process after testing device detect whether reach emission standard after, discharge or again process.But this patent treatment process is too simple, and be only carry out neutralizing treatment by neutralizing agent to acid washing phosphorization waste water, treatment effect is very unobvious.
Summary of the invention
For solving above-mentioned Problems existing, the object of the present invention is to provide a kind of acid washing phosphorization waste water treatment process, described technique sets up anaerobic pond and Aerobic Pond, adopt the phosphorus containg substances in A/O method process acid washing phosphorization waste water and organism, treatment effect is good, and cost is low, environmentally friendly.
For achieving the above object, technical scheme of the present invention is:
A kind of acid washing phosphorization waste water treatment process, comprises the steps:
1) acid washing phosphorization waste water is tentatively filtered the useless impurities in water of removal through grid;
2) the acid washing phosphorization waste water after preliminary filtration sends into homogeneous equalizing tank, makes acid washing phosphorization waste water obtain homogeneous;
3) by lift pump, the acid washing phosphorization waste water after homogenization treatment is sent into hybrid reaction settler, and in described hybrid reaction settler, add coagulating agent by dosing pump, make described acid washing phosphorization waste water carry out solid-liquid separation in hybrid reaction settler, and add alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
4) deliver to reactor for hydrolysis and acidification through the isolated waste water of hybrid reaction settler through water pump and carry out acidification;
5) waste water after acidification is sent into anaerobic pond, the denitrifying bacteria in anaerobic pond carries out dephosphorization treatment to waste water;
6) waste water after anaerobic pond process is sent in Aerobic Pond, in Aerobic Pond organic matter degradation bacteria effect under, the organism in degrading waste water;
7) waste water after Aerobic Pond process enters air flotation pool, removes the grease in waste water, reduces COD;
8) waste water after air flotation pool process sends into mechanical screening device, sends into clear water storage pool after removing the suspended substance in water.
Further, step 2) in the residence time of acid washing phosphorization waste water in homogeneous equalizing tank be 2 ~ 3h.
Separately, step 3) described in coagulating agent be selected from one in Tai-Ace S 150, aluminum chloride, ferrous sulfate, calcium hydroxide and magnesiumcarbonate.
Separately have, step 3) described in coagulating agent be calcium hydroxide.
Again, step 3) described in acid washing phosphorization waste water residence time in hybrid reaction settler be 0.5 ~ 1h.
Further, step 3) in pH value be 10 ~ 11.
And, step 6) in sanitary sewage residence time in Aerobic Pond be 0.3 ~ 0.5h.
Separately, step 6) described in Aerobic Pond DO be 2 ~ 4mg/L.
Again, step 6) described in be provided with YDT type elastic solid filler in Aerobic Pond, YDT type elastic solid filler adheres to by microorganism, forms one deck microorganism rete.
Beneficial effect of the present invention is:
Described technique adopts A/O method treatment process, and combine anaerobism, aerobic advantage, can effectively explain the phosphorus in acid washing phosphorization waste water and organism and remove, the water outlet pH value after having processed be 6 ~ 8, meets discharging standards, COD in water outlet
crcontent≤35mg/L, is starkly lower than the 100mg/L in national standard, and in water outlet, phosphorus content is 0.4 ~ 0.5mg/L, and treatment effect is good, and cost is low, environmentally friendly.
Embodiment
Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.The implementation condition adopted in embodiment can be for further adjustments according to the condition of producer, and unaccounted implementation condition is generally conventional laboratory conditions.
A kind of acid washing phosphorization waste water treatment process provided by the present invention, comprises the steps:
1) acid washing phosphorization waste water is tentatively filtered the useless impurities in water of removal through grid;
2) the acid washing phosphorization waste water after preliminary filtration sends into homogeneous equalizing tank, makes acid washing phosphorization waste water obtain homogeneous;
3) by lift pump, the acid washing phosphorization waste water after homogenization treatment is sent into hybrid reaction settler, and in described hybrid reaction settler, add coagulating agent by dosing pump, make described acid washing phosphorization waste water carry out solid-liquid separation in hybrid reaction settler, and add alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
4) deliver to reactor for hydrolysis and acidification through the isolated waste water of hybrid reaction settler through water pump and carry out acidification;
5) waste water after acidification is sent into anaerobic pond, the denitrifying bacteria in anaerobic pond carries out dephosphorization treatment to waste water;
6) waste water after anaerobic pond process is sent in Aerobic Pond, in Aerobic Pond organic matter degradation bacteria effect under, the organism in degrading waste water;
7) waste water after Aerobic Pond process enters air flotation pool, removes the grease in waste water, reduces COD;
8) waste water after air flotation pool process sends into mechanical screening device, sends into clear water storage pool after removing the suspended substance in water.
Further, step 2) in the residence time of acid washing phosphorization waste water in homogeneous equalizing tank be 2 ~ 3h.
Separately, step 3) described in coagulating agent be selected from one in Tai-Ace S 150, aluminum chloride, ferrous sulfate, calcium hydroxide and magnesiumcarbonate.
Separately have, step 3) described in coagulating agent be calcium hydroxide.
Again, step 3) described in acid washing phosphorization waste water residence time in hybrid reaction settler be 0.5 ~ 1h.
Further, step 3) in pH value be 10 ~ 11.
And, step 6) in sanitary sewage residence time in Aerobic Pond be 0.3 ~ 0.5h.
Separately, step 6) described in Aerobic Pond DO be 2 ~ 4mg/L.
Again, step 6) described in be provided with YDT type elastic solid filler in Aerobic Pond, YDT type elastic solid filler adheres to by microorganism, forms one deck microorganism rete.
A kind of acid washing phosphorization waste water treatment process provided by the present invention, adopt A/O method treatment process, combine anaerobism, aerobic advantage, can effectively the phosphorus in acid washing phosphorization waste water and organism be explained and be removed, water outlet pH value after having processed is 6 ~ 8, meet discharging standards, COD in water outlet
crcontent≤35mg/L, is starkly lower than the 100mg/L in national standard, and in water outlet, phosphorus content is 0.4 ~ 0.5mg/L, and treatment effect is good, and cost is low, environmentally friendly.
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to the technical scheme of invention or equivalent replacement, and not depart from the scope of technical solution of the present invention, it all should be encompassed in right of the present invention.
Claims (9)
1. an acid washing phosphorization waste water treatment process, is characterized in that, comprises the steps:
Acid washing phosphorization waste water is tentatively filtered through grid and removes useless impurities in water;
Acid washing phosphorization waste water after preliminary filtration sends into homogeneous equalizing tank, makes acid washing phosphorization waste water obtain homogeneous;
By lift pump, the acid washing phosphorization waste water after homogenization treatment is sent into hybrid reaction settler, and in described hybrid reaction settler, add coagulating agent by dosing pump, make described acid washing phosphorization waste water carry out solid-liquid separation in hybrid reaction settler, and add alkali aluminium, polyacrylamide removal phosphate anion, heavy metal ion and COD;
Deliver to reactor for hydrolysis and acidification through the isolated waste water of hybrid reaction settler through water pump and carry out acidification;
Waste water after acidification is sent into anaerobic pond, and the denitrifying bacteria in anaerobic pond carries out dephosphorization treatment to waste water;
Waste water after anaerobic pond process is sent in Aerobic Pond, in Aerobic Pond organic matter degradation bacteria effect under, the organism in degrading waste water;
Waste water after Aerobic Pond process enters air flotation pool, removes the grease in waste water, reduces COD;
Waste water after air flotation pool process sends into mechanical screening device, sends into clear water storage pool after removing the suspended substance in water.
2., according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterized in that, step 2) in the residence time of acid washing phosphorization waste water in homogeneous equalizing tank be 2 ~ 3h.
3., according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterized in that, step 3) described in coagulating agent be selected from one in Tai-Ace S 150, aluminum chloride, ferrous sulfate, calcium hydroxide and magnesiumcarbonate.
4., according to a kind of acid washing phosphorization waste water treatment process described in claim 2, it is characterized in that, step 3) described in coagulating agent be calcium hydroxide.
5., according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterized in that, step 3) described in acid washing phosphorization waste water residence time in hybrid reaction settler be 0.5 ~ 1h.
6., according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterized in that, step 3) in pH value be 10 ~ 11.
7., according to a kind of acid washing phosphorization waste water treatment process described in claim 1, it is characterized in that, step 6) in sanitary sewage residence time in Aerobic Pond be 0.3 ~ 0.5h.
8. a kind of acid washing phosphorization waste water treatment process according to claim 1, is characterized in that, step 6) described in Aerobic Pond DO be 2 ~ 4mg/L.
9. a kind of acid washing phosphorization waste water treatment process according to claim 1, is characterized in that, step 6) described in be provided with YDT type elastic solid filler in Aerobic Pond, YDT type elastic solid filler adheres to by microorganism, forms one deck microorganism rete.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116022A (en) * | 2016-07-14 | 2016-11-16 | 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 |
| CN110902963A (en) * | 2019-12-10 | 2020-03-24 | 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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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106116022A (en) * | 2016-07-14 | 2016-11-16 | 胡大苇 | A kind of ammonia nitrogen processing method in acid waste water containing heavy metal |
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| 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 |
| CN110902963A (en) * | 2019-12-10 | 2020-03-24 | 九江天赐高新材料有限公司 | Treatment method of alkali-soluble polymer-containing wastewater |
| 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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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 Effective date of registration: 20210331 Granted publication date: 20180202 Pledgee: Bank of China Limited by Share Ltd. Huaihua branch Pledgor: Hongjiang Jinyi Water Treatment Co.,Ltd. Registration number: Y2021980002265 |