CN102476848A - Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof - Google Patents
Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof Download PDFInfo
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- CN102476848A CN102476848A CN201110319391XA CN201110319391A CN102476848A CN 102476848 A CN102476848 A CN 102476848A CN 201110319391X A CN201110319391X A CN 201110319391XA CN 201110319391 A CN201110319391 A CN 201110319391A CN 102476848 A CN102476848 A CN 102476848A
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Abstract
The invention discloses a composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and an application method thereof, belonging to the field of sewage treatment for environmental protection. The composite dephosphorizing agent is prepared by compounding organics and inorganic minerals, wherein the organics include one or two of organic alcohols, organic esters and carboxylic acids; and the inorganic minerals include one or two of plaster stone, struvite, olivine, magnalium copiapite. Calculated by the total mass percentage of the dephosphorizing agent, the organics account for 20%-25% and the inorganic account for 60%-80%. 10-40 ppm of the composite dephosphorizing agent prepared according to said proportion is added to the low-concentration phosphorous-containing wastewater to adjust the pH value of the phosphorous-containing wastewater to 6.5-8.5; and an air floatation treatment is then performed after the mixture is mixed for 10-30 min. The discharged water can reach the national first class discharge standard; and the composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and the application method disclosed by the invention have the advantages of a simple process flow, a relatively low drug dosage, a relatively low operation cost, no sludge generation, a high dephosphorization effect and the like.
Description
Technical field
The present invention is a kind of composite dephosphorizing agent and application method thereof of handling low-concentration phosphorus-containing wastewater, relates to the removal of phosphate anion in the waste water, belongs to field of waste water treatment in the environment protection.
Background technology
Phosphorus is the one of the chief elements that maintains life in the earth system, also is to constitute organism and participate in the requisite element of metabolic processes.The quality rich scarce, the phosphorus environment of element will directly influence all biological growing that comprise the people.In recent years, body eutrophication has become the problem of worldwide attention, and in general, the total phosphorus mass concentration surpasses 20mg/L in the water body, can think that water body is in eutrophication.And the principal element that causes body eutrophication is phosphorus and nitrogen, and phosphorus has special effect to the eutrophication of water body.The sewage that contains a large amount of nutritive ingredients flows into closed water areas such as lake, has quickened the eutrophication in waters, and this phenomenon comprises that all over the world China all constantly takes place, and has all brought great harm for industry, water industry and agricultural and tourism.After phosphorus-containing wastewater was through a series of physics, chemistry, biological treatment, phosphate ion concentration also had about 2mg/L～20mg/L in the water outlet, can not reach discharging standards, and difficult the removal.
Processing low-concentration phosphorus-containing wastewater method commonly used both at home and abroad at present mainly contains the precipitator method, Coagulation Method, biological process and absorption and ion exchange method.(1) precipitator method are as traditional phosphorus removing method, and comparative maturity aspect theoretical Technology produces problems such as some mud and dephosphorization be thorough inadequately but also exist in the dephosphorization process; (2) biological process has successfully solved unmanageable shortcoming of precipitator method mud and non-secondary pollution phenomenon, but the treatment process more complicated, biological activity is subject to environmental influence; (3) ion exchange method is through phosphate anion being had the very strong method of selecting adsorbing material to remove phosphate anion in the waste water.The investment of this method is little, and technology is simple, but when handling low-concentration phosphorus-containing wastewater, regeneration is frequent, makes troubles to operation.
For overcoming the deficiency of prior art; The invention provides a kind of composite dephosphorizing agent of removing low-concentration phosphorus-containing wastewater; This inventive method technical process is simple, and added amount of chemical is less relatively, and working cost is lower; Can one step of low-concentration phosphorus-containing wastewater of 2mg/L～20mg/L be dropped to below the 0.1mg/L, the inventive method has a extensive future.
Summary of the invention
The objective of the invention is for overcoming the deficiency of prior art, a kind of preparation and application method thereof of removing the composite dephosphorizing agent of low-concentration phosphorus-containing wastewater is provided, this dephosphorization agent low in raw material cost is easy to get, and the preparation method is simple, good practical effect.
The technical scheme that the present invention adopts is: this composite dephosphorizing agent is by organism and inorganic mineral is composite forms, and by accounting for composite dephosphorizing agent total mass per-cent, wherein organism accounts for 20%～25%, and inorganics accounts for 60%～80%.
Said organism is meant organic alcohols, organosilane ester and carboxylic-acid.
Described organic alcohols is one or both in ring ethanol, oleyl alcohol, the propyl carbinol.
Described organosilane ester is one or both in ethylene-acetic acid ethyl ester, octadecyl acrylate, 3-mercapto-propionate, triethyl phosphate, triethly orthoacetate, positive silicic acid second propyl ester, trimethyl orthoacetate, the acetate sugar ester.
Described carboxylic-acid is one or both in sodium vinyl sulfonate, Cyclopropylacetic acid, 2-amino-6-tolyl acid, the 4-ethoxy-phenylacetic acid.
Said inorganic mineral is meant plaster stone, lets out stone, in peridotites and the magnalium yellow copperas one or both.
By accounting for composite dephosphorizing agent total mass per-cent, described organic alcohols is one or both in ring ethanol 5%～15%, oleyl alcohol 5%～15%, the propyl carbinol 5%～15%; Described organosilane ester is one or both in ethylene-acetic acid ethyl ester 5%～15%, octadecyl acrylate 5%～15%, 3-mercapto-propionate 5%～15%, triethyl phosphate 5%～15%, triethly orthoacetate 5%～15%, positive silicic acid second propyl ester 5%～15%, trimethyl orthoacetate 5%～15%, the acetate sugar ester 5%～15%; Described carboxylic-acid is one or both in sodium vinyl sulfonate 5%～15%, Cyclopropylacetic acid 5%～15%, 2-amino-6-tolyl acid 5%～15%, the 4-ethoxy-phenylacetic acid 5%～15%; Described inorganic mineral is plaster stone 35%～75%, let out in stone 35%～75%, peridotites 35%～75%, the magnalium yellow copperas 35%～75% one or both.
The application method of this composite dephosphorizing agent is: in the time of in being added to waste water; According to the height of phosphorus content concentration in the waste water, the mass ratio that adds medicament and waste water is 1:1000～1:100, again phosphorus-containing wastewater pH value is adjusted to 6.5～8.5 earlier; Stir after 10～30min; Carry out air supporting again and handle, strike off one deck residue that floats over the waste water surface with slag scraper at last, water outlet is the waste water of removing phosphorus.
The invention has the beneficial effects as follows:
(1) easy to use, simple to operate;
(2) added amount of chemical is less relatively, and working cost is lower, and does not have the mud generation;
(2) used medicament is inexpensive, be easy to get;
(3) can one step of the phosphorus in the low-concentration phosphorus-containing wastewater of 2mg/L～20mg/L be dropped to below the 0.1mg/L.
Embodiment
Composite dephosphorizing agent of the present invention is by organism and inorganic mineral is composite forms, and by accounting for composite dephosphorizing agent total mass per-cent, wherein organism accounts for 20%～25%, and inorganics accounts for 60%～80%.
Described organic alcohols is one or both in ring ethanol, oleyl alcohol, the propyl carbinol.
Described organosilane ester is one or both in ethylene-acetic acid ethyl ester, octadecyl acrylate, 3-mercapto-propionate, triethyl phosphate, triethly orthoacetate, positive silicic acid second propyl ester, trimethyl orthoacetate, the acetate sugar ester.
Described carboxylic-acid is one or both in sodium vinyl sulfonate, Cyclopropylacetic acid, 2-amino-6-tolyl acid, the 4-ethoxy-phenylacetic acid.
Said inorganic mineral is meant plaster stone, lets out stone, in peridotites and the magnalium yellow copperas one or both.
Above-mentioned composite dephosphorizing agent and mass ratio are specially: described organosilane ester is one or both in ethylene-acetic acid ethyl ester 5%～15%, octadecyl acrylate 5%～15%, 3-mercapto-propionate 5%～15%, triethyl phosphate 5%～15%, triethly orthoacetate 5%～15%, positive silicic acid second propyl ester 5%～15%, trimethyl orthoacetate 5%～15%, the acetate sugar ester 5%～15%; Described carboxylic-acid is one or both in sodium vinyl sulfonate 5%～15%, Cyclopropylacetic acid 5%～15%, 2-amino-6-tolyl acid 5%～15%, the 4-ethoxy-phenylacetic acid 5%～15%; Described inorganic mineral is plaster stone 35%～75%, let out in stone 35%～75%, peridotites 35%～75%, the magnalium yellow copperas 35%～75% one or both.
When dosing; According to the height of phosphorus content concentration in the waste water, the mass ratio that adds medicament and waste water is 1:1000～1:100, again phosphorus-containing wastewater pH value is adjusted to 6.5～8.5 earlier; Stir after 10～30min; Carry out air supporting again and handle, strike off one deck residue that floats over the waste water surface with slag scraper at last, water outlet is the waste water of removing phosphorus.
Instance 1
By accounting for composite dephosphorizing agent total mass per-cent, will encircle ethanol 10%, 3-mercapto-propionate 10%, plaster stone 35%, peridotites 45% and be made into composite dephosphorizing agent, handle certain pharmacy waste water is phosphorous; Phosphorus content 15mg/L in the waste water gets 20L waste water during test, the mass ratio that adds medicament and waste water is 1:890; And regulate pH=6.9, and stir 25min, carry out air supporting again and handle; Strike off one deck residue that floats over the waste water surface with slag scraper at last, phosphorus content is 0.15mg/L in the water outlet.
Instance 2
By accounting for composite dephosphorizing agent total mass per-cent, with oleyl alcohol 5%, triethyl phosphate 5%, sodium vinyl sulfonate 15%, let out stone 20%, magnalium yellow copperas 40% is made into composite dephosphorizing agent, handle certain pharmacy waste water is phosphorous; Phosphorus content 20mg/L in the waste water; Get 3L waste water during test, the mass ratio that adds medicament and waste water is 1:600, and regulates pH=7.1; Stir 20min; Carry out air supporting again and handle, strike off one deck residue that floats over the waste water surface with slag scraper at last, phosphorus content is 0.13mg/L in the water outlet.
Instance 3
By accounting for composite dephosphorizing agent total mass per-cent, propyl carbinol 5%, octadecyl acrylate 10%, Cyclopropylacetic acid 10%, peridotites 75% are made into composite dephosphorizing agent, handle certain pharmacy waste water is phosphorous; Phosphorus content 5mg/L in the waste water gets 5L waste water during test, the mass ratio that adds medicament and waste water is 1:500; And regulate pH=7.9, and stir 27min, carry out air supporting again and handle; Strike off one deck residue that floats over the waste water surface with slag scraper at last, phosphorus content is 0.12mg/L in the water outlet.
Instance 4
By accounting for composite dephosphorizing agent total mass per-cent, will encircle ethanol 10%, acetate sugar ester 10%, be that vinyl sulfonic acid 5%, magnalium yellow copperas 70% are made into composite dephosphorizing agent, handle certain pharmacy waste water is phosphorous; Phosphorus content 18mg/L in the waste water gets 2L waste water during test, the mass ratio that adds medicament and waste water is 1:300; And regulate pH=8.0, and stir 25min, carry out air supporting again and handle; Strike off one deck residue that floats over the waste water surface with slag scraper at last, phosphorus content is 0.13mg/L in the water outlet.
Instance 5
By accounting for composite dephosphorizing agent total mass per-cent, trimethyl orthoacetate 10%, 4-ethoxy-phenylacetic acid 10%, peridotites 35%, magnalium yellow copperas 45% are made into composite dephosphorizing agent, handle certain pharmacy waste water is phosphorous; Phosphorus content 10mg/L in the waste water; Get 8L waste water during test, the mass ratio that adds medicament and waste water is 1:560, and regulates pH=8.5; Stir 30min; Carry out air supporting again and handle, strike off one deck residue that floats over the waste water surface with slag scraper at last, phosphorus content is 0.1mg/L in the water outlet.
Claims (6)
1. a composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater; It is characterized in that: this composite dephosphorizing agent forms by organic alcohols, organosilane ester, carboxylic-acid and inorganic mineral are composite, and inorganic mineral is meant plaster stone, lets out stone, in peridotites and the magnalium yellow copperas one or both; Described organic alcohols is one or both in ring ethanol, oleyl alcohol, the propyl carbinol; Described organosilane ester is one or both in ethylene-acetic acid ethyl ester, octadecyl acrylate, 3-mercapto-propionate, triethyl phosphate, triethly orthoacetate, positive silicic acid second propyl ester, trimethyl orthoacetate, the acetate sugar ester; Described carboxylic-acid is one or both in sodium vinyl sulfonate, Cyclopropylacetic acid, 2-amino-6-tolyl acid, the 4-ethoxy-phenylacetic acid.
2. a kind of composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater according to claim 1; It is characterized in that: by accounting for composite dephosphorizing agent total mass per-cent, ring ethanol 10%, 3-mercapto-propionate 10%, plaster stone 35%, peridotites 45% are made into composite dephosphorizing agent.
3. a kind of composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater according to claim 1; It is characterized in that: by accounting for composite dephosphorizing agent total mass per-cent, oleyl alcohol 5%, triethyl phosphate 5%, sodium vinyl sulfonate 15%, let out stone 20%, magnalium yellow copperas 40% is made into composite dephosphorizing agent.
4. a kind of composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater according to claim 1; It is characterized in that: by accounting for composite dephosphorizing agent total mass per-cent, propyl carbinol 5%, octadecyl acrylate 10%, Cyclopropylacetic acid 10%, peridotites 75% are made into composite dephosphorizing agent.
5. a kind of composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater according to claim 1; It is characterized in that:, encircle ethanol 10%, acetate sugar ester 10%, be that vinyl sulfonic acid 5%, magnalium yellow copperas 70% are made into composite dephosphorizing agent by accounting for composite dephosphorizing agent total mass per-cent.
6. a kind of composite dephosphorizing agent and application method thereof of removing low-concentration phosphorus-containing wastewater according to claim 1; It is characterized in that: by accounting for composite dephosphorizing agent total mass per-cent, trimethyl orthoacetate 10%, 4-ethoxy-phenylacetic acid 10%, peridotites 35%, magnalium yellow copperas 45% are made into composite dephosphorizing agent.
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| CN201110319391XA CN102476848A (en) | 2011-10-20 | 2011-10-20 | Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof |
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| CN201110319391XA CN102476848A (en) | 2011-10-20 | 2011-10-20 | Composite dephosphorizing agent for removing phosphorus from low-concentration phosphorous-containing wastewater and application method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976460A (en) * | 2012-12-11 | 2013-03-20 | 常州大学 | Boiler waste slag-based composite dephosphorizing material and application method thereof |
| CN103011365A (en) * | 2012-11-27 | 2013-04-03 | 常州大学 | Compound phosphorus removing agent for removing low-concentration phosphorus wastewater |
| CN106830123A (en) * | 2017-03-09 | 2017-06-13 | 桂林融通科技有限公司 | A kind of agricultural chemicals waste water dephosphorization agent |
| CN107555518A (en) * | 2017-09-18 | 2018-01-09 | 江苏科力特环保科技有限公司 | A kind of activated carbon water treatment agent |
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| JP2001334274A (en) * | 2000-05-25 | 2001-12-04 | Kurita Water Ind Ltd | Dephosphorization method |
| JP2005040739A (en) * | 2003-07-24 | 2005-02-17 | Unitika Ltd | Phosphate-containing wastewater treatment method |
| CN101318730A (en) * | 2008-05-06 | 2008-12-10 | 华南理工大学 | Inorganic-organic composite chemical dephosphorization agent, preparation method and application thereof |
| CN101560005A (en) * | 2009-06-01 | 2009-10-21 | 湖南师范大学 | Amphoteric polymeric flocculant for removing phosphor in sewage |
| CN101575133A (en) * | 2008-12-05 | 2009-11-11 | 江苏工业学院 | Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof |
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2011
- 2011-10-20 CN CN201110319391XA patent/CN102476848A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001334274A (en) * | 2000-05-25 | 2001-12-04 | Kurita Water Ind Ltd | Dephosphorization method |
| JP2005040739A (en) * | 2003-07-24 | 2005-02-17 | Unitika Ltd | Phosphate-containing wastewater treatment method |
| CN101318730A (en) * | 2008-05-06 | 2008-12-10 | 华南理工大学 | Inorganic-organic composite chemical dephosphorization agent, preparation method and application thereof |
| CN101575133A (en) * | 2008-12-05 | 2009-11-11 | 江苏工业学院 | Composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and application method thereof |
| CN101560005A (en) * | 2009-06-01 | 2009-10-21 | 湖南师范大学 | Amphoteric polymeric flocculant for removing phosphor in sewage |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011365A (en) * | 2012-11-27 | 2013-04-03 | 常州大学 | Compound phosphorus removing agent for removing low-concentration phosphorus wastewater |
| CN102976460A (en) * | 2012-12-11 | 2013-03-20 | 常州大学 | Boiler waste slag-based composite dephosphorizing material and application method thereof |
| CN106830123A (en) * | 2017-03-09 | 2017-06-13 | 桂林融通科技有限公司 | A kind of agricultural chemicals waste water dephosphorization agent |
| CN107555518A (en) * | 2017-09-18 | 2018-01-09 | 江苏科力特环保科技有限公司 | A kind of activated carbon water treatment agent |
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Application publication date: 20120530 |