CN108314154A - A kind of preparation method of composite dephosphorizing agent for sewage disposal - Google Patents
A kind of preparation method of composite dephosphorizing agent for sewage disposal Download PDFInfo
- Publication number
- CN108314154A CN108314154A CN201810102087.1A CN201810102087A CN108314154A CN 108314154 A CN108314154 A CN 108314154A CN 201810102087 A CN201810102087 A CN 201810102087A CN 108314154 A CN108314154 A CN 108314154A
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- CN
- China
- Prior art keywords
- medicament
- dephosphorizing agent
- water
- composite dephosphorizing
- sewage disposal
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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
- 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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention relates to a kind of preparation methods of the composite dephosphorizing agent for sewage disposal.The composite dephosphorizing agent is made of medicament A and medicament B.The preparation method of medicament A：By mass ratio 2.5 1.1:1.0‑2.5Fe2(SO4)3And AlCl3·6H2O solids are placed in reactor, by the quality 2 of mixture in water and reactor:1‑5:1 ratio is into reactor plus water makes it dissolve, and obtains ferric sulfate aluminium chloride liquid；Sequentially add a certain amount of sodium hypochlorite, sodium chlorate, potassium permanganate, mixing；The preparation method of medicament B：Will be one or more soluble in water in polyacrylamide, polydimethyl diallyl ammonium chloride, it is configured to 0.05 1% solution.Composite dephosphorizing agent prepared by the present invention has the characteristics that phosphor-removing effect is good, takes into account removal COD, SS, can be widely used for the fields such as black and odorous water improvement, Industrial Wastewater Treatment, treatment of domestic sewage advanced, and easy to operate, is suitable for promoting.
Description
Technical field
The present invention relates to advanced treatment of wastewater technical fields in environmental protection, and in particular to a kind of answering for sewage disposal
Close the preparation method of dephosphorization agent.
Background technology
Phosphate fertilizer, nitrogenous fertilizer are applied in China's agricultural production extensively, and city dweller largely uses Powdered Detergent Containing Phosphate to wash clothing, causes
Total phosphorus content is up to 5-20mg/L in life, production waste, and nitrogen, phosphorus category biological nutrition substance can cause if not being controlled
Body eutrophication leads to alga eruption, so that water body is generated stench and bad perception, seriously affects quality of water environment.
In order to effectively reduce the content of nitrogen in waste water, phosphorus, sewage treatment plant's generally use biotechnology.Bioanalysis denitrogenates,
Dephosphorization has the characteristics that not add auxiliary agent, processing cost cheap, is widely applied in wastewater treatment in China factory.When into factory's raw water carbon source
When sufficient, total phosphorus content is less than 6-8mg/L or less, the sewage total phosphorus content after Biochemical method can be down to 0.5mg/L hereinafter, i.e.
Reach country《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) level-one A marks require.But work as into factory's raw water
When carbon source is insufficient, total phosphorus content is higher than 6-8mg/L, treated sewage total phosphorus content is extremely difficult to sewage discharge level-one A marks or
The requirement of person's higher standard.
Institute of the sewage disposal enterprise sewage effluent that national requirements is built after 2006 must reach《Urban wastewater treatment firm is dirty
Contaminate object discharge standard》(GB18918-2002) level-one A marks require, this, which allows for many sewage treatment plants, to change without technology
It makes, on the basis of biological phosphate-eliminating, carries out chemical dephosphorization work.
Commercial chemistry dephosphorization agent mainly has the productions such as aluminium polychloride, bodied ferric sulfate, polyaluminum ferric chloride on the market at present
Product, it is insufficient with phosphorus-containing compound effect in sewage by the mainly nonionic state presence with polymeric form of its alferric, it adds
Amount is big, and phosphor-removing effect is poor, and dephosphorization is of high cost.When preposition add, the effect of no collaboration removal COD seriously constrains chemistry and removes
The promotion and application of phosphorus technology.
Invention content
The purpose of the present invention is overcoming the shortcomings of existing chemical dephosphorization technology, a kind of preparation side of dephosphorization special agent is provided
A kind of method, and in particular to the preparation method of composite dephosphorizing agent for sewage disposal.A kind of new method, new is provided for sewage disposal
Thinking.
Compared with prior art, the invention has the advantages that：
1, the main sulfur acid iron of product and aluminium chloride normal salt, overcome common dephosphorization agent polyaluminum ferric chloride, polyaluminium
The problem of aluminium, bodied ferric sulfate nonionic state aluminium, iron and phosphor in sewage acid ion are difficult to form precipitation, dephosphorization efficiency higher；
2, this compound dephosphorization agent is a kind of multinuclear Dephosphorization reagent, hydrolyzes a large amount of hydroxide flcos precipitation of generation, with
And (Fe (H2O6))+2、(Fe2(H2O)6)+3、(Fe(OH)2)+4Equal polynuclear complexes, above-mentioned substance and ion compare table with prodigious
Area and adsorption capacity have very strong suction to the negatively charged phosphate radical, hydrogen phosphate, dihydrogen phosphate that contain in sewage
Attached effect, makes coacervation of colloid in sewage together, reaches the mesh of removal pollutant can be by absorption, bridge formation, crosslinking the effects that
's.
3, when product is preposition to be added, due to containing potassium permanganate in product, there is strong oxidizing property, can with it is organic in sewage
Object and reducing substances reaction, produce the manganese dioxide of nascent state, have stronger specific surface area and cnmplexation adsorbability.When
When product postposition adds, due to containing polyacrylamide in product, the bridge formation suction-operated of organic high molecular compound can be passed through
Phosphor-removing effect is improved, ensures dephosphorization efficiency.
It is 4, of the invention using ferric sulfate, alchlor, sodium hypochlorite, sodium chlorate, potassium permanganate, PAM as main production raw material,
Have no need to change original sub-block technological process in application process, large-scale water treatment building need not be added, can efficient dephosphorization,
Can take into account again removing COD and except SS the characteristics of, it is simple and easy to do, it is economical and practical, be widely portable to black and odorous water, industrial wastewater,
The fields such as sanitary sewage disposal have good water treatment efficiency.
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with this specific embodiment, it is clear that described implementation
Example is only a part of the embodiment of the present invention, and present disclosure is not limited to cited embodiment, ordinary skill people
Member belongs to the model that the present invention protects by reference to the present invention and to any equivalent transformation that technical solution of the present invention is taken
It encloses.
Embodiment 1：The preparation method of compound dephosphorization agent
150kg composite dephosphorizing agents are prepared, steps are as follows：
S1 claims sample：17kgFe is weighed respectively2(SO4)3、15kgAlCl3·6H2O, 6kg sodium hypochlorite, 2kg sodium chlorate, 3kg
Potassium permanganate and the polyacrylamide that 1kg molecular weight is 200-1500 ten thousand, separately measure 106 liters of water；
S2 feeds：By Fe2(SO4)3And AlCl3·6H2O is placed in reactor, and water is added into reactor, stirring while adding,
So that mixture is dissolved, obtains ferric sulfate-aluminium chloride liquid；Sodium hypochlorite, sodium chlorate, potassium permanganate are sequentially added, stirring makes molten
Solution；
S3 is mixed：Polyacrylamide is added into mixed liquor made from above-mentioned steps；
S4 is emulsified：Booting stirring 2-3 hours, is made the mixed liquor of composite dephosphorizing agent.
In order to further verify above-mentioned compound dephosphorization agent with bodied ferric sulfate, aluminium polychloride medicament to total in sewage
The removal effect of phosphorus, COD, SS, for Taiyuan black-odor riverway water body, 26 to 28 November in 2017 uses above-mentioned respectively
Compound dephosphorization agent made from method and three kinds of bodied ferric sulfate conventional in the market, aluminium polychloride medicaments carry out 3 days by a definite date
Chemical dephosphorization, the contrast experiment except COD, except SS, which uses 3 unpowered coagulation apparatus, and every designed capacity is
5000 ton per days, experimental result are shown in Table 1-1, table 1-2, table 1-3.
Table 1-1：Composite dephosphorizing agent is to total phosphorus removal effect in sewage
Table 1-2：Composite dephosphorizing agent is to COD removal effects in sewage
Table 1-3：Composite dephosphorizing agent is to SS removal effects in sewage
Experiments have shown that the compound dephosphorization agents of 280mg/L are added, and average total tp removal rate 89.11%, best total tp removal rate
Up to 92.93%；Average COD removal 32.53%, best COD removal rates are up to 43.49%；Average SS removal rates 90.56%, most
Good SS removal rates are up to 91.28%.Better than bodied ferric sulfate, aluminium polychloride to the removal rate of total phosphorus, COD, SS.
Embodiment 2：The application of compound dephosphorization agent
A. when sewage treatment plant is preposition add when, in every cube of sewage, ferric sulfate, alchlor, sodium hypochlorite, chloric acid
Sodium, potassium permanganate dosage be respectively 80-170g, 70-150g, 20-60g, 5-20g, 5-30g.
B. when sewage treatment plant's postposition adds, in every cube of sewage, ferric sulfate, alchlor, sodium hypochlorite, chloric acid
Sodium, potassium permanganate dosage be respectively 80-170kg, 70-150kg, 20-60kg, 5-20kg, 1-5g.
It is identical that two kinds of situations add component, and difference is in medicament A that potassium permanganate quality is different.Therefore, it prepares containing higher
The composite dephosphorizing agent of concentration (a) potassium permanganate is added for sewage disposal to be preposition；Prepare answering for the potassium permanganate of (b) containing low concentration
Dephosphorization agent is closed to add for sewage disposal postposition.
When carrying out industrial wastewater, sanitary sewage disposal, following dosing method may be selected：
Mode one：The composite dephosphorizing agent of the potassium permanganate containing 3kg, is used for the preposition throwing of sewage disposal in per 100kg medicaments
Add.
Mode two：The composite dephosphorizing agent of the potassium permanganate containing 0.5kg, is used for the postposition of sewage disposal in per 100kg medicaments
It adds.
Mode three：The Gao Meng of the composite dephosphorizing agent and two kinds of specification of quality of 0.5kg and 3kg of the invention without potassium permanganate
Sour potassium is combined.It is preposition when adding, it is added after the potassium permanganate mixing of the 3kg specifications of quality is added；When postposition adds, it is added
It is added after the potassium permanganate mixing of the 0.5kg specifications of quality.
Claims (8)
1. a kind of composite dephosphorizing agent for sewage disposal, it is characterised in that：The composite dephosphorizing agent is by medicament A and medicament B
It is dissolved in water to be mixed, wherein medicament A each components account for composite dephosphorizing agent mass percent and are：Ferric sulfate 8.0%-17.0%, trichlorine
Change aluminium 7.0%-15.0%, sodium hypochlorite 2.0%-6.0%, sodium chlorate 0.5%-2.0%, potassium permanganate 0.01%-6.0%；Medicament B be containing
Polyacrylamide（PAM）, polydimethyl diallyl ammonium chloride（PDADMAC）In it is one or more, it is total to account for composite dephosphorizing agent
The 0.01%-1% of amount；Surplus is water.
2. a kind of composite dephosphorizing agent for sewage disposal as described in claim 1, it is characterised in that：In the medicament A
Alchlor includes six water crystallization aluminium chloride (AlCl3·6H2O), anhydrous Aluminum chloride and other aluminium chlorohydrates, each group in medicament A
Divide includes its anhydrous compound and hydrate.
3. a kind of composite dephosphorizing agent for sewage disposal as claimed in claim 2, it is characterised in that：Six water crystallizations
The mass ratio of aluminium chloride and ferric sulfate is 1.0-2.5:2.5-1.1.
4. a kind of composite dephosphorizing agent for sewage disposal as described in claim 1, it is characterised in that：In the medicament B
Polyacrylamide, polydimethyl diallyl ammonium chloride are the high molecular polymer that molecular weight is 200-1500 ten thousand.
5. a kind of preparation method of composite dephosphorizing agent for sewage disposal, which is characterized in that include the following steps：
S1：It is 2.5-1.1 by mass ratio:The Fe of 1.0-2.52(SO4)3And AlCl3·6H2O solids are placed in reactor, are then pressed
The quality 2 of water and mixture in reactor:1-5:1 ratio is into reactor plus water, stirring make it dissolve, obtain ferric sulfate-
Aluminium chloride liquid；
S2：According to ferric sulfate made from sodium hypochlorite and S1-aluminium chloride liquid quality than the ratio for 2.0%-6.0%, toward sulfuric acid
Sodium hypochlorite is added in iron-aluminium chloride liquid；According to ferric sulfate-aluminium chloride liquid 0.5%-2.0% made from sodium chlorate and S1
Sodium chlorate is added in ratio；
S3：According to ferric sulfate made from potassium permanganate and S1-aluminium chloride liquid quality than preparing industry for the ratio of 0.01%-6%
Potassium permanganate；
S4：Molecular weight, which is added, according to the ratio of ferric sulfate made from polyacrylamide and S1-aluminium chloride liquid 0.01%-0.5% is
It is one or more in the polyacrylamide of 200-1500 ten thousand, polydimethyl diallyl ammonium chloride；
S5：After all dosage component mixing, being sufficiently stirred makes mixing, and the mixed liquor of composite dephosphorizing agent is made.
6. a kind of preparation method of composite dephosphorizing agent for sewage disposal as claimed in claim 5, it is characterised in that：In S1
Added water includes industrial water, drinking water, water for pharmaceutical purposes.
7. a kind of preparation method of composite dephosphorizing agent for sewage disposal as claimed in claim 5, it is characterised in that：S3 matches
The potassium permanganate of system includes M1(0.01%-0.5%)、M2(0.1%-3.0%) two kinds of specifications.
8. a kind of preparation method of composite dephosphorizing agent for sewage disposal as claimed in claim 5, it is characterised in that：S3 matches
The feed postition of the potassium permanganate of system includes following two：A. medicament B is being added in independent component of the potassium permanganate as medicament A
It individually adds afterwards；B. medicament B mixings are added after potassium permanganate being added into medicament A.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102087.1A CN108314154A (en) | 2018-02-01 | 2018-02-01 | A kind of preparation method of composite dephosphorizing agent for sewage disposal |
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| CN201810102087.1A CN108314154A (en) | 2018-02-01 | 2018-02-01 | A kind of preparation method of composite dephosphorizing agent for sewage disposal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264861A (en) * | 2018-11-02 | 2019-01-25 | 北京博泰至淳生物科技有限公司 | Composite drug and preparation method thereof |
| CN109502677A (en) * | 2018-11-01 | 2019-03-22 | 中化化工科学技术研究总院有限公司 | A kind of efficient dephosphorization agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843961A (en) * | 2006-05-19 | 2006-10-11 | 北京工业大学 | Composite dephosphorizing coagulant dedicated for drinking water |
| CN103991941A (en) * | 2014-05-22 | 2014-08-20 | 西安益维普泰科工贸有限公司 | Compound chemical phosphorus removal agent for sewage and preparation method thereof |
-
2018
- 2018-02-01 CN CN201810102087.1A patent/CN108314154A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843961A (en) * | 2006-05-19 | 2006-10-11 | 北京工业大学 | Composite dephosphorizing coagulant dedicated for drinking water |
| CN103991941A (en) * | 2014-05-22 | 2014-08-20 | 西安益维普泰科工贸有限公司 | Compound chemical phosphorus removal agent for sewage and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502677A (en) * | 2018-11-01 | 2019-03-22 | 中化化工科学技术研究总院有限公司 | A kind of efficient dephosphorization agent and preparation method thereof |
| CN109264861A (en) * | 2018-11-02 | 2019-01-25 | 北京博泰至淳生物科技有限公司 | Composite drug and preparation method thereof |
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Effective date of registration: 20200331 Address after: Room 084, No.2, government road, optical electromechanical integration industrial base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Applicant after: XINKAI WATER ENVIRONMENT INVESTMENT Co.,Ltd. Address before: 300450 Tianjin Binhai New Area free trade pilot area (Dongjiang Bonded Port Area) Luoyang Road No. 601 (Haifeng Logistics Park 2 -1-2-128) Applicant before: ZHONGSHUIXIN (TIANJIN) ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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Address after: 701, 7 / F, building 2, No. 60, Xinhua West Street, Tongzhou District, Beijing Applicant after: Guotou xinkaishui Environmental Investment Co.,Ltd. Address before: Room 084, No.2, government road, optical electromechanical integration industrial base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Applicant before: XINKAI WATER ENVIRONMENT INVESTMENT Co.,Ltd. |
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Effective date of registration: 20200720 Address after: 300461 Tianjin Binhai New Area Tianjin pilot free trade zone (Dongjiang Bonded Port Area), No. 599, Ordos Road, Dongjiang business center, No. 903, A3 floor, Dongjiang business center Applicant after: Tianjin Huanchuang Science and Technology Development Co.,Ltd. Address before: 701, 7 / F, building 2, No. 60, Xinhua West Street, Tongzhou District, Beijing Applicant before: Guotou xinkaishui Environmental Investment Co.,Ltd. |
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