CN107973386A - A kind of Dephosphorising agent and application for phosphorus deep removal - Google Patents
A kind of Dephosphorising agent and application for phosphorus deep removal Download PDFInfo
- Publication number
- CN107973386A CN107973386A CN201711296958.XA CN201711296958A CN107973386A CN 107973386 A CN107973386 A CN 107973386A CN 201711296958 A CN201711296958 A CN 201711296958A CN 107973386 A CN107973386 A CN 107973386A
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- CN
- China
- Prior art keywords
- agent
- parts
- dephosphorising
- water
- phosphorus
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
Abstract
The invention discloses a kind of Dephosphorising agent for phosphorus deep removal, the Dephosphorising agent is made of A agent and B agent, in terms of mass fraction, wherein A agent is made of 40 70 parts of 10 30 parts of sodium hypochlorite, 0 10 parts of hydrogen peroxide, 05 parts of potassium permanganate and water, and B agent is made of 5 40 parts of molysite, 2 10 parts of aluminium salt, 1 10 parts of calcium carbonate, 0.2 2 parts of dicyandiamide formaldehyde resin, 60 80 parts of water.Dephosphorising agent of the present invention stirs and B agent stirring is added after the reaction was complete, A agent, B agent additions are determined according to water quality in use, first addition A agent.The characteristics of phosphor-removing effect that the Dephosphorising agent of the present invention is used for low-phosphorous waste water is good, and few with dosage, and cost is low, and it is applied widely.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to be a kind of liquid efficient dephosphorization agent and application, main application
In the advanced treating of low COD, low-phosphorous waste water.
Background technology
In the latest 20 years, the environmental situation produced with the high speed development of China's chemical industry is also increasingly tight
Weight.Therefore, phosphorus pollution is prevented, preserves the ecological environment, is sound development institute of China face rationally using non-renewable limited resources
The urgent task and important topic faced, the harm of understanding phosphorus pollution and the method for studying dephosphorization have great reality meaning
Justice.As environmental requirement is increasingly stringent, all parts of the country improve the discharge standard of outer draining, and original sewage treatment process and
Equipment can not meet to put forward the discharge standard after mark, and not can be used for compared with multiple enterprises Processes and apparatus transformation land used or
It is not used for the enough funds transformed, is badly in need of efficient dephosphorization agent and realizes qualified discharge for handling waste water.It is but existing currently on the market
Phosphorus relatively low in waste water cannot be removed and reach emission request by some Dephosphorising agents from waste water, reduce pollution.
The content of the invention：
To solve the above problems, the present invention provides a kind of dephosphorization effect it is good, can realize being used for for outer draining qualified discharge
The Dephosphorising agent of phosphorus deep removal, the Dephosphorising agent by by organophosphor medicament be changed into material in positive phosphorus and medicament combine to form precipitation from
And deviate from.
A kind of Dephosphorising agent for phosphorus deep removal of the invention, which is made of A agent and B agent, in terms of mass fraction, its
Middle A agent is made of 40-70 parts of 10-30 parts of sodium hypochlorite, 0-10 parts of hydrogen peroxide, 0-5 parts of potassium permanganate and water, and B agent is by molysite
5-40 parts, 2-10 parts of aluminium salt, 1-10 parts of calcium carbonate, 0.2-2 parts of dicyandiamide formaldehyde resin, 60-80 parts of water composition.
The wherein described molysite is preferably ferric sulfate, ferrous sulfate or bodied ferric sulfate.
The aluminium salt is preferably aluminium polychloride.
Present invention also offers the preparation method of the above-mentioned Dephosphorising agent for phosphorus deep removal, including：
The first step：Add water in reaction kettle, be stirred at room temperature, rotating speed 20-50r/min, is gradually added secondary by number
Sodium chlorate, hydrogen peroxide, potassium permanganate, are made A agent；
Second step：Add water in reaction kettle and be stirred at room temperature, rotating speed 20-50r/min, molysite, aluminium are added by number
Salt, calcium carbonate powder, dicyandiamide formaldehyde resin, are made B agent.
Present invention also offers the application method of the above-mentioned Dephosphorising agent for phosphorus deep removal, including：According to first add A agent,
Stirring after the reaction was complete after add B agent stirring, the addition sequence of medicament, it is impossible to change, according to the different adjustment A medicaments of water quality and
The species and ratio of B medicament active ingredients.Specially：A agent, if phosphorus content is higher in water quality, COD are prepared according to water quality
Compare high, it is necessary to properly increase A agent use ratios.B agent mainly controls the ratio of molysite aluminium salt according to the concentration of dirty water pollutant
Example, the amount of calcium carbonate is controlled according to the PH of water, according to the ratio of molysite ratio control dicyandiamide formaldehyde resin in COD and B agent.
Waste water is first placed in stirring in A reaction vessels (or reaction tank), adds A agent, then adds B agent；It is anti-that the water outlet of A reactors enters B
Answer vessel (or reaction tank) stirring, sedimentation.
The present invention is used for the Dephosphorising agent of phosphorus deep removal compared with traditional dephosphorization agent, has and is imitated to removing organophosphor in sewage
Fruit is more preferable, while can continue dephosphorization to waste water of the phosphorus content less than 2ppm to horizontal small, the costs with dosage of below 0.5ppm
The characteristics of low, and it is applied widely, various types of waste water can be handled, water chemistry property after treatment is stablized.The present invention
Dephosphorising agent is mainly used in the dephosphorization of low COD, low-phosphorous waste water, and dephosphorization efficiency generally in 80%-90%, can also remove a part
COD is used for the dephosphorization of non-deeply treating wastewater, equally with preferable effect.
Embodiment
Technical solution of the present invention is described further with reference to specific embodiment.
The Dephosphorising agent used in embodiment 1-4, including：
A agent：In terms of mass parts, 10 parts of sodium hypochlorite, 1 part of potassium permanganate, 89 parts of water；
B agent：In terms of mass parts, 20 parts of ferric sulfate, 2 parts of aluminium polychloride, 1 part of calcium carbonate, dicyandiamide formaldehyde resin 0.3
Part, 76.7 parts of water.
Embodiment 1：Certain petrochemical wastewater COD is 53mg/L, total phosphorus 1.5mg/L, PH=6.9；A agent is added under room temperature
100ppm/L stirs (30r/m), and question response is added completely into B agent 50ppm, stirs (30r/m) 10s.After standing 30min, supernatant is taken
Liquid test COD is 45mg/L, and removal rate 15%, total phosphorus is that 0.3mg/L removal rates are 80%.
Embodiment 2：Certain wastewater from chemical industry raw wastewater COD is 41mg/L, total phosphorus 2.3mg/LPH=7.2；A is added under room temperature
Agent 80ppm/L stirs (30r/m), and question response is added completely into B agent 50ppm, stirs (30r/m) 10s, after standing 30min, takes supernatant
Liquid test COD is that 22mg/L removal rates are 46%, and total phosphorus is that 0.2mg/L removal rates are 91.3%.
Embodiment 3：Certain coal chemical industrial waste water raw wastewater COD is 58mg/L, total phosphorus 3.6mg/L, PH=7.0；Add under room temperature
Enter A agent 150ppm/L stirrings (30r/m), question response is added completely into B agent 60ppm, stirs (30r/m) 10s, after standing 30min, takes
Supernatant test COD is that 40mg/L removal rates are 31%, and total phosphorus is that 0.4mg/L removal rates are 80%.
Embodiment 4：Certain dyeing waste water raw wastewater COD is 70mg/L, total phosphorus 4.6mg/L, PH=7.9；A is added under room temperature
Agent 200ppm/L stirs (30r/m), and question response is added completely into B agent 60ppm, stirs (30r/m) 10s, after standing 30min, takes
Clear liquid test COD is that 53mg/L removal rates are 24%, and total phosphorus is that 0.5mg/L removal rates are 89.1%.
The Dephosphorising agent used in embodiment 4-6, including：
A agent：In terms of mass parts, 12 parts of sodium hypochlorite, 88 parts of water；
B agent：In terms of mass parts, 10 parts of ferric sulfate, 3.5 parts of aluminium polychloride, 8 parts of calcium carbonate, dicyandiamide formaldehyde resin 0.3
Part, 78.2 parts of water.
Embodiment 5：Certain wastewater from chemical industry raw wastewater COD is 55mg/L, total phosphorus 0.9mg/L, PH=5.1；A is added under room temperature
Agent 90ppm/L stirs (30r/m), and question response is added completely into B agent 50ppm, stirs (30r/m) 10s, after standing 30min, takes supernatant
Liquid test COD is that 45mg/L removal rates are 18.2%, and total phosphorus is that 0.3mg/L removal rates are 66.7%.
Embodiment 6：Certain wastewater from chemical industry raw wastewater COD is 49mg/L, total phosphorus 0.6mg/L, PH=5.4；A is added under room temperature
Agent 80ppm/L stirs (30r/m), and question response is added completely into B agent 40ppm, stirs (30r/m) 10s, after standing 30min, takes supernatant
Liquid test COD is that 30mg/L removal rates are 38.8%, and total phosphorus is that 0.2mg/L removal rates are 66.7%.
Claims (5)
- A kind of 1. Dephosphorising agent for phosphorus deep removal, it is characterised in that it is made of A agent and B agent, in terms of mass fraction, wherein A agent It is made of 40-70 parts of 10-30 parts of sodium hypochlorite, 0-10 parts of hydrogen peroxide, 0-5 parts of potassium permanganate and water, B agent is by molysite 5-40 60-80 parts of part, 2-10 parts of aluminium salt, 1-10 parts of calcium carbonate, 0.2-2 parts of dicyandiamide formaldehyde resin, water compositions.
- 2. the Dephosphorising agent according to claim 1 for phosphorus deep removal, it is characterised in that the molysite for ferric sulfate, Ferrous sulfate or bodied ferric sulfate.
- 3. the Dephosphorising agent according to claim 1 for phosphorus deep removal, it is characterised in that the aluminium salt is polyaluminium Aluminium.
- 4. a kind of preparation method of the Dephosphorising agent for phosphorus deep removal described in claim 1, including：The first step：Add water in reaction kettle, be stirred at room temperature, rotating speed 20-50r/min, progressively adds hypochlorous acid by number Sodium, hydrogen peroxide, potassium permanganate, are made A agent；Second step：Add water in reaction kettle and be stirred at room temperature, rotating speed 20-50r/min, molysite, aluminium salt, carbon are added by number Sour calcium powder, dicyandiamide formaldehyde resin, are made B agent.
- 5. application of the Dephosphorising agent for phosphorus deep removal in waste water is handled described in claim 1, it is characterised in that to waste water It is middle first to add A agent, stir and B agent stirring is added after the reaction was complete, A agent, B agent addition and composition are determined according to water quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296958.XA CN107973386A (en) | 2017-12-08 | 2017-12-08 | A kind of Dephosphorising agent and application for phosphorus deep removal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296958.XA CN107973386A (en) | 2017-12-08 | 2017-12-08 | A kind of Dephosphorising agent and application for phosphorus deep removal |
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| CN107973386A true CN107973386A (en) | 2018-05-01 |
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| CN201711296958.XA Pending CN107973386A (en) | 2017-12-08 | 2017-12-08 | A kind of Dephosphorising agent and application for phosphorus deep removal |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010055559A (en) * | 1999-12-10 | 2001-07-04 | 최주식 | A solid and liquid separating method on food dregs by basefing hydrolysis |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
| CN102153177A (en) * | 2011-04-25 | 2011-08-17 | 宜兴禾大水处理技术有限公司 | Efficient dephosphorization agent for waste water treatment |
| CN103991987A (en) * | 2014-06-09 | 2014-08-20 | 北京碧水源环境工程有限公司 | Process for pre-treating high-concentration phosphorus-containing wastewater to remove total phosphorus (TP) and process system thereof |
| CN104828924A (en) * | 2015-05-19 | 2015-08-12 | 杭州正洁环保科技有限公司 | Composite dephosphorizing agent for treating phosphorus-containing wastewater and application method thereof |
| CN107055730A (en) * | 2017-01-18 | 2017-08-18 | 四川东江化工有限公司 | A kind of high efficiency composition dephosphorization agent and preparation method thereof |
-
2017
- 2017-12-08 CN CN201711296958.XA patent/CN107973386A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010055559A (en) * | 1999-12-10 | 2001-07-04 | 최주식 | A solid and liquid separating method on food dregs by basefing hydrolysis |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
| CN102153177A (en) * | 2011-04-25 | 2011-08-17 | 宜兴禾大水处理技术有限公司 | Efficient dephosphorization agent for waste water treatment |
| CN103991987A (en) * | 2014-06-09 | 2014-08-20 | 北京碧水源环境工程有限公司 | Process for pre-treating high-concentration phosphorus-containing wastewater to remove total phosphorus (TP) and process system thereof |
| CN104828924A (en) * | 2015-05-19 | 2015-08-12 | 杭州正洁环保科技有限公司 | Composite dephosphorizing agent for treating phosphorus-containing wastewater and application method thereof |
| CN107055730A (en) * | 2017-01-18 | 2017-08-18 | 四川东江化工有限公司 | A kind of high efficiency composition dephosphorization agent and preparation method thereof |
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Application publication date: 20180501 |
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