CN102633335A - Sewage treatment method - Google Patents
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- CN102633335A CN102633335A CN2012101167440A CN201210116744A CN102633335A CN 102633335 A CN102633335 A CN 102633335A CN 2012101167440 A CN2012101167440 A CN 2012101167440A CN 201210116744 A CN201210116744 A CN 201210116744A CN 102633335 A CN102633335 A CN 102633335A
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Abstract
The invention discloses a sewage treatment method comprising the following steps of: (i) mixing an aluminum oxide solution with an ammonium carbonate solution; agitating uniformly to obtain poly-aluminum chloride for future use; (ii) mixing an acrylic amide solution with an acrylic acid solution; dripping a sodium hydroxide solution into the mixed solution to adjust the pH (Potential of Hydrogen) to be neutral; introducing nitrogen gas and adding an ammonium persulfate solution; shaking uniformly and adding a sodium hydrogensulfite solution to react to obtain polyacrylamide for future use; and (iii) taking sewage and adding the poly-aluminum chloride into the sewage; agitating and adding the polyacrylamide after fine suspension particles appear in the sewage; and agitating and standing after a flocculating constituent appears in the sewage. The sewage treatment method disclosed by the invention has the properties of short flocculating time, long storage time of the flocculating constituent, great impact strength of the flocculating constituent, high COD (Chemical Oxygen Demand) removing rate and good de-coloring effect, and can be widely applied to the treatment of various types of the sewage, particularly papermaking middle-section sewage treatment.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, specifically a kind ofly be used to handle the especially treatment process of papermaking stage casing sewage of various sewage.
Background technology
Along with development of modern industry, the discharging of large amount of sewage, severe contamination the environment of human survival, thereby water pollution is human problem demanding prompt solution.Paper waste is one of major polluting sources of water pollution, contains impurity such as a large amount of fine-fibereds, resin, colorant in its papermaking midcourse wastewater, as when discharging not in addition processing water resources is seriously damaged.The technological process of treating papermaking technology is more both at home and abroad, and wherein the most widely used is flocculent precipitation, promptly utilizes flocculation agent that dispersive fine-grained solids in the sewage liquid is formed throw out, and redeposition filters throw out, reaches the decontamination purpose.At present, handling the normal flocculation agent that uses of papermaking midcourse wastewater has inorganic flocculating agent, inorganic polymer flocculant and organic polymer coargulator, compares with inorganic flocculating agent; The organic floculant consumption is few, and flocculation rate is fast, and the salt that coexisted, medium and ambient temperature effect are little; Treating processes is short, and the sludge quantity of generation is few, but it costs an arm and a leg; And mostly flocculation agent itself or its hydrolysis, degraded product are poisonous; Therefore receive certain restriction, for overcoming the defective that single flocculation agent is disposed of sewage, people usually use composite flocculation agent.Disclose a kind of effective flocculating agent for paper making waste water and preparation method thereof like CN101085687A, this flocculation agent is with water glass, water mixing, adds liquid aluminium sulfate, adds yellow soda ash after the reacting by heating, regulates the reaction of proper pH value post-heating, behind slaking 24 h, gets product.Though this method cost is lower, the suspended substance removal rate is higher, complicated process of preparation, the COD clearance is low, and flco is prone to disperse.In addition; Part industrial enterprise also has and Poly aluminum Chloride (PAC), SEPIGEL 305 and other reagent are formulated as composite flocculation agent dispose of sewage, but because used Poly aluminum Chloride (PAC) and Preparation of Polyacrylamide method are unreasonable, the composite method of use of all ingredients is not good enough in the prescription; It is long to cause flocculation time in decontamination process, occurring; The flocs unit shelf time is short, and staple fibre is prone to disperse the problem that the COD clearance is low.
Summary of the invention
The object of the invention just provides a kind of sewage water treatment method, has the problem that flocculation rate is slow, the flco shelf time is short, the flco impact resistance is poor, the COD clearance is low when existing method is disposed of sewage to solve.
The objective of the invention is to realize through following technical scheme:
A kind of sewage water treatment method provided by the present invention, it may further comprise the steps:
(i) preparation of Poly aluminum Chloride (PAC): be 15～25% liquor alumini chloridi with quality with quality be that 15～25% sal volatile is that 1 ︰ 0.8～1.5 mixes by volume than concentration than concentration, stirring and evenly mixing, Poly aluminum Chloride (PAC), subsequent use;
(ii) Preparation of Polyacrylamide: be 15～25% acrylamide soln with quality with quality be that 15～25% acrylic acid solution is that 1 ︰ 0.8～1.5 mixes by volume than concentration than concentration; Get mixed solution, its pH value of dropping sodium solution adjusting is neutral in this mixed solution, logical nitrogen 20～30 min; The adding quality is 15～25% ammonium persulfate solution than concentration; Shake up, adding quality again is 15～25% sodium sulfite solution than concentration, after the reaction SEPIGEL 305; The volume ratio of wherein said ammonium persulfate solution, sodium sulfite solution and mixed solution is 0.2 ︰, 0.1 ︰ 1;
(iii) get sewage; In sewage, add the Poly aluminum Chloride (PAC) that (i) step prepares, stir 0.5～2 min, after treating tiny suspended particulate to occur in the sewage; Add the SEPIGEL 305 that (ii) step prepares again; Stir 1～2 min, occur in the sewage leaving standstill behind the flocs unit, the volume ratio of wherein said interpolation Poly aluminum Chloride (PAC), SEPIGEL 305 and sewage is 0.2～0.35 ︰, 0.03～0.06 ︰ 100.
The preferred volume ratio of described liquor alumini chloridi of the present invention (i) step and sal volatile is 1 ︰ 1～1.1.
The present invention (ii) preferred volume ratio of the described acrylamide soln of step and acrylic acid solution is 1 ︰ 0.9～1.1.
The present invention (ii) quality of the described sodium hydroxide solution of step is 10% than concentration.
The present invention (iii) preferred volume ratio of the described Poly aluminum Chloride (PAC) of step, SEPIGEL 305 and sewage is 0.25～0.3 ︰, 0.04～0.05 ︰ 100.
Sewage water treatment method provided by the invention; The mechanism of its decontamination reaction is there are a large amount of positively chargeds in the self-control poly aluminium chloride in sewage polymerization plasma; Micelle in the sewage is played effects such as adsorption bridging and charge neutrality; Thereby make elimination of colloid stability, add self-control SEPIGEL 305 adsorption bridging again, make flocculating effect reach optimum regime.
Innovation part of the present invention is poly aluminium chloride and Preparation of Polyacrylamide method; And the interpolation order of two kinds of preparations and the selection of consumption proportion in the WWT use, this can solve and have the problem that flocculation rate is slow, the flco shelf time is short, the COD clearance is low in the process of disposing of sewage.
That uses among the present invention has very strong flocculation and helps the effect of coagulating from preparing polymeric aluminium chloride and SEPIGEL 305; Colloidal particle in the sewage of papermaking stage casing is taken off surely; And make pollutent form floc sedimentation rapidly through effects such as absorption charge neutrality, adsorption bridgings; It is existing relatively handles papermaking wastewater flocculation agent and has that flocculation rate is fast, the flco shelf time for a long time, percent of decolourization be with the COD clearance all can reach more than 95%, pH is applied widely, dried wet tenacity is good, the impact of high pressure resistant water, staple fibre are not easy advantages such as dispersion; And the prices of raw and semifnished materials are cheap, and preparation technology is simple, and are easy for operation; Not only can be widely used in the WWT of papermaking stage casing, also can handle any sewage and industrial sewage.
Embodiment
Following embodiment is used for further explain the present invention, but does not limit the present invention in any form.
Embodiment 1
Get 150 g Aluminum chloride anhydrouss, pulverize the back and slowly add 750 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% liquor alumini chloridi; Get volatile salt 50g again, add and to put into dissolving vessel, add 250 ml ultrapure waters, fully stir, making it fully be dissolved into mass ratio is 20% sal volatile.Be that 1 ︰ 0.8 puts into the chemical combination jar by volume with liquor alumini chloridi for preparing and sal volatile then, violent stirring makes two kinds of solution thorough mixing, promptly obtains poly aluminium chloride, and is subsequent use.Get the 150g acrylic amide, slowly add 750 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% acrylamide soln; Get 150 g vinylformic acid, slowly add the 750ml ultrapure water, making it fully be dissolved into mass ratio is 20% acrylic acid solution; Getting mass ratio and be 20% acrylamide soln is that 1 ︰ 0.8 mixes with mass ratio 20% acrylic acid solution by volume, mixed solution, in this mixed solution, drip quality and be 10% sodium hydroxide solution regulator solution pH to 7 than concentration; Putting into polymerization bottle then vacuumizes; Behind logical nitrogen 20 min, add mass ratio again and be 20% ammonium persulphate promotor, shake up; Add mass ratio again and be 20% the synthetic SEPIGEL 305 of sodium sulfite solution, thereby it is subsequent use to obtain SEPIGEL 305; And the volume ratio of feasible ammonium persulfate solution, sodium sulfite solution and the above-mentioned mixed solution that adds is 0.2 ︰, 0.1 ︰ 1.
When disposing of sewage water sample; Get 200 mL sewage and place 500 mL beakers, start magnetic stirring apparatus after adding 0.5 ml poly aluminium chloride, transfer mixing speed to be 100 r/min after; Stir 1 min; Add 0.08 ml SEPIGEL 305 then, water sample is moved in the graduated cylinder of 500 mL after stirring 1 min, leave standstill.
Embodiment 2
Get 150 g Aluminum chloride anhydrouss, pulverize the back and slowly add 750 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% liquor alumini chloridi; Get volatile salt 50g again, add and to put into dissolving vessel, add the 250ml ultrapure water, fully stir, making it fully be dissolved into mass ratio is 20% sal volatile.Be that 1 ︰ 1.5 puts into the chemical combination jar by volume with liquor alumini chloridi for preparing and sal volatile then, violent stirring makes two kinds of solution thorough mixing, promptly obtains poly aluminium chloride, and is subsequent use.Get the 150g acrylic amide, slowly add the 750ml ultrapure water, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% acrylamide soln; Get 150g vinylformic acid, slowly add the 750ml ultrapure water, making it fully be dissolved into mass ratio is 20% acrylic acid solution; Getting quality and than concentration be 20% acrylamide soln is that 20% acrylic acid solution is that 1 ︰ 1.5 mixes by volume with quality than concentration; Mixed solution, in this mixed solution, dripping quality is 10% sodium hydroxide solution regulator solution pH to 7 than concentration, puts into polymerization bottle then and vacuumizes; Behind logical nitrogen 25 min; Add mass ratio again and be 20% ammonium persulphate promotor, shake up, add mass ratio again and be 20% the synthetic SEPIGEL 305 of sodium sulfite solution; Thereby it is subsequent use to obtain SEPIGEL 305, and the volume ratio of feasible ammonium persulfate solution, sodium sulfite solution and the above-mentioned mixed solution that adds is 0.2 ︰, 0.1 ︰ 1.
When disposing of sewage water sample; Get 200 mL sewage and place 500 mL beakers, start magnetic stirring apparatus after adding 0.6 ml poly aluminium chloride, transfer mixing speed to be 100 r/min after; Stir 0.5 min; Add 0.1 ml SEPIGEL 305 then, water sample is moved in the graduated cylinder of 500 mL after stirring 1.5 min, leave standstill.
Embodiment 3
Get 150 g Aluminum chloride anhydrouss, pulverize the back and slowly add 750 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% liquor alumini chloridi; Get volatile salt 50g again, add and to put into dissolving vessel, add the 250ml ultrapure water, fully stir, making it fully be dissolved into mass ratio is 20% sal volatile.Be that 1 ︰ 1 puts into the chemical combination jar by volume with liquor alumini chloridi for preparing and sal volatile then, violent stirring makes two kinds of solution thorough mixing, promptly obtains poly aluminium chloride, and is subsequent use.Get the 150g acrylic amide, slowly add the 750ml ultrapure water, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 20% acrylamide soln; Get 150g vinylformic acid, slowly add the 750ml ultrapure water, making it fully be dissolved into mass ratio is 20% acrylic acid solution; Getting quality and than concentration be 20% acrylamide soln is that 20% acrylic acid solution is that 1 ︰ 1 mixes by volume with quality than concentration; Mixed solution, in this mixed solution, dripping quality is 10% sodium hydroxide solution regulator solution pH to 7 than concentration, puts into polymerization bottle then and vacuumizes; Behind logical nitrogen 30 min; Adding quality again is 20% ammonium persulphate promotor than concentration, shakes up, and adds quality again and than concentration be 20% the synthetic SEPIGEL 305 of sodium sulfite solution; Thereby it is subsequent use to get SEPIGEL 305, and the volume ratio of feasible ammonium persulfate solution, sodium sulfite solution and the above-mentioned mixed solution that adds is 0.2 ︰, 0.1 ︰ 1.
When disposing of sewage water sample; Get 200 mL sewage and place 500 mL beakers, start magnetic stirring apparatus after adding 0.4 ml poly aluminium chloride, transfer mixing speed to be 100 r/min after; Stir 2.0 min; Add 0.06 ml SEPIGEL 305 then, water sample is moved in the 500 mL graduated cylinders after stirring 2 min, leave standstill.
Embodiment 4
Get 120 g Aluminum chloride anhydrouss, pulverize the back and slowly add 800 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into quality is 15% liquor alumini chloridi than concentration; Get volatile salt 45 g again, add and to put into dissolving vessel, add 300 ml ultrapure waters, fully stir, making it fully be dissolved into quality is 15% sal volatile than concentration.Be that 1 ︰ 1.1 puts into the chemical combination jar by volume with liquor alumini chloridi for preparing and sal volatile then, violent stirring makes two kinds of solution thorough mixing, promptly obtains poly aluminium chloride, and is subsequent use.Get 120 g acrylic amides, slowly add 800 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into mass ratio is 15% acrylamide soln; Get 120 g vinylformic acid, slowly add 800 ml ultrapure waters, making it fully be dissolved into quality is 15% acrylic acid solution than concentration; Getting quality and than concentration be 15% acrylamide soln is that 15% acrylic acid solution is that 1 ︰ 0.9 mixes by volume with quality than concentration; Mixed solution, in this mixed solution, dripping quality is 10% sodium hydroxide solution regulator solution pH to 7 than concentration, puts into polymerization bottle then and vacuumizes; Behind logical nitrogen 25 min; Adding quality again is 15% ammonium persulphate promotor than concentration, shakes up, and adds quality again and than concentration be 15% the synthetic SEPIGEL 305 of sodium sulfite solution; Thereby it is subsequent use to obtain SEPIGEL 305, and the volume ratio of feasible ammonium persulfate solution, sodium sulfite solution and the above-mentioned mixed solution that adds is 0.2 ︰, 0.1 ︰ 1.
When disposing of sewage water sample; Get 200 mL sewage and place 500 mL beakers, start magnetic stirring apparatus after adding 0.5 ml poly aluminium chloride, transfer mixing speed to be 100 r/min after; Stir 1.5 min; Add 0.11 ml SEPIGEL 305 then, water sample is moved in the 500mL graduated cylinder after stirring 1.5 min, leave standstill.
Embodiment 5
Get 150 g Aluminum chloride anhydrouss, pulverize the back and slowly add 600 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into quality is 25% liquor alumini chloridi than concentration; Get volatile salt 50g again, add and to put into dissolving vessel, add the 200ml ultrapure water, fully stir, making it fully be dissolved into quality is 25% sal volatile than concentration.Be that 1 ︰ 1 puts into the chemical combination jar by volume with liquor alumini chloridi for preparing and sal volatile then, violent stirring makes two kinds of solution thorough mixing, promptly obtains poly aluminium chloride, and is subsequent use.Get 150 g acrylic amides, slowly add 600 ml ultrapure waters, put into dissolving vessel, start magnetic stirring apparatus, making it fully be dissolved into quality is 25% acrylamide soln than concentration; Get 150g vinylformic acid, slowly add the 600ml ultrapure water, making it fully be dissolved into mass ratio is 25% acrylic acid solution; Getting quality and than concentration be 25% acrylamide soln and quality is that 25% acrylic acid solution is that 1 ︰ 0.9 mixes by volume than concentration; Mixed solution, in this mixed solution, dripping quality is 10% sodium hydroxide solution regulator solution pH to 7 than concentration, puts into polymerization bottle then and vacuumizes; Behind logical nitrogen 20 min; Adding quality again is 25% ammonium persulphate promotor than concentration, shakes up, and adds quality again and than concentration be 25% the synthetic SEPIGEL 305 of sodium sulfite solution; Thereby it is subsequent use to obtain SEPIGEL 305, and the volume ratio of feasible ammonium persulfate solution, sodium sulfite solution and the above-mentioned mixed solution that adds is 0.2 ︰, 0.1 ︰ 1.
When disposing of sewage water sample; Get 200 mL sewage and place 500 mL beakers, start magnetic stirring apparatus after adding 0.7 ml poly aluminium chloride, transfer mixing speed to be 100 r/min after; Stir 1.5 min; Add 0.12 ml SEPIGEL 305 then, water sample is moved in the 500 mL graduated cylinders after stirring 1 min, leave standstill.
Comparative Examples 1
Prepare the aqueous solution of following quality: 5% polymeric aluminum chlorides solution (PAC), 10% SEPIGEL 305 improvement I type (PAM-I), 10% SEPIGEL 305 improvement II type (PAM-II) than concentration.
When disposing of sewage, get 200 mL sewage and place the 500mL beaker, add 5.0 ml PAC after; Start magnetic stirring apparatus, after the accent mixing speed is 100 r/min, stir 1 min; Add 4.5 ml PAM-I then; Stir and add 3.5 ml PAM-II behind 1 min, water sample is moved in the 500 mL graduated cylinders after stirring 1 min, leave standstill.
PAC, PAM-I and PAM-II come from Gongyi, Henan solid flocculation agent.
The detection method of embodiment 6 specific embodiment of the invention
(1) transparence detects: adopt spectrophotometry-722 type spectrophotometer;
(2) COD clearance: potassium dichromate process;
(3) flco resistance to impact shock coefficient: the settled layer and the suspended solid of come-up layer are collected, and dried, weigh; Calculate by following formula:
The quality W of flco resistance to impact shock coefficient/ζ=settled layer suspended solid
1/ (the quality W of come-up layer suspended solid
2The quality W of+settled layer suspended solid
1)
Detected result: see table 1 for details
Table 1 flocculation agent detergency ability detects
| Project | Flocculation time/s | Flco shelf time/h | Flco resistance to impact shock coefficient/ζ | COD clearance/% | Percent of decolourization/% |
| Embodiment 1 | 18 | 26 | 89.25 | 95.32 | 96.17 |
| Embodiment 2 | 20 | 26 | 90.38 | 94.68 | 96.23 |
| Embodiment 3 | 17 | 25 | 91.13 | 95.72 | 95.78 |
| Embodiment 4 | 18 | 30 | 88.17 | 95.14 | 95.34 |
| Embodiment 5 | 15 | 24 | 90.26 | 95.89 | 95.25 |
| Comparative Examples 1 | 65 | 2 | 79.46 | 80.17 | 89.98 |
Sewage among the embodiment is taken from Li Yuan paper mill, Baoding.
Show by above data, sewage water treatment method provided by the invention will have that flocculation time is short, the flco shelf time for a long time, big, the COD clearance height of flco resistance to impact shock and good decolorizing effect.Therefore, the prices of raw and semifnished materials that this method adopts are cheap, and preparation technology is simple, and is easy to use, good in economic efficiency, is easy to apply.
Claims (5)
1. sewage water treatment method is characterized in that may further comprise the steps:
(i) preparation of Poly aluminum Chloride (PAC): be 15～25% liquor alumini chloridi with quality with quality be that 15～25% sal volatile is that 1 ︰ 0.8～1.5 mixes by volume, stir than concentration than concentration, Poly aluminum Chloride (PAC), subsequent use;
(ii) Preparation of Polyacrylamide: be 15～25% acrylamide soln with quality with quality be that 15～25% acrylic acid solution is that 1 ︰ 0.8～1.5 mixes by volume than concentration than concentration; Get mixed solution, its pH value of dropping sodium solution adjusting is neutral in mixed solution, logical nitrogen 20～30 min; The adding quality is 15～25% ammonium persulfate solution than concentration; Shake up, adding quality again is 15～25% sodium sulfite solution than concentration, after the reaction SEPIGEL 305; The volume ratio of wherein said ammonium persulfate solution, sodium sulfite solution and mixed solution is 0.2 ︰, 0.1 ︰ 1;
(iii) get sewage; In sewage, add the Poly aluminum Chloride (PAC) that (i) step prepares, stir 0.5～2 min, after treating tiny suspended particulate to occur in the sewage; Add the SEPIGEL 305 that (ii) step prepares again; Stir 1～2 min, occur in the sewage leaving standstill behind the flocs unit, the volume ratio of wherein said Poly aluminum Chloride (PAC), SEPIGEL 305 and sewage is 0.2～0.35 ︰, 0.03～0.06 ︰ 100.
2. sewage water treatment method according to claim 1 is characterized in that described liquor alumini chloridi of (i) step and sal volatile are that 1 ︰ 1～1.1 mixes by volume.
3. sewage water treatment method according to claim 1 is characterized in that (ii) the described acrylamide soln of step is that 1 ︰ 0.9～1.1 mixes with acrylic acid solution by volume.
4. sewage water treatment method according to claim 1 is characterized in that (ii) the quality of the described sodium hydroxide solution of step is 10% than concentration.
5. sewage water treatment method according to claim 1 is characterized in that (iii) the volume ratio of the described Poly aluminum Chloride (PAC) of step, SEPIGEL 305 and sewage is 0.25～0.3 ︰, 0.04～0.05 ︰ 100.
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| CN 201210116744 CN102633335B (en) | 2012-04-20 | 2012-04-20 | Sewage treatment method |
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| CN 201210116744 CN102633335B (en) | 2012-04-20 | 2012-04-20 | Sewage treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848933A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Preparation method and application of flocculating agent |
| CN105439266A (en) * | 2015-11-24 | 2016-03-30 | 宜兴市丰烨化学有限公司 | Acrylamide and dimethylamine containing flocculant and preparation method thereof |
| CN110040830A (en) * | 2019-05-30 | 2019-07-23 | 南华大学 | A kind of processing method of industrial wastewater |
| CN112694197A (en) * | 2021-03-24 | 2021-04-23 | 潍坊恒联特种纸有限公司 | Decolorizing process for color papermaking wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999021801A1 (en) * | 1997-10-29 | 1999-05-06 | Prox T.E.C. Poprad, S.R.O. | Method for water purification based on the fenton reaction |
| US20060201861A1 (en) * | 2003-12-23 | 2006-09-14 | Young Wing Y | Water treatment mixture and system for use |
| CN101108751A (en) * | 2006-07-21 | 2008-01-23 | 中国石油化工股份有限公司 | Processing method of urban sewage sludge reduction |
| CN102127188A (en) * | 2010-01-19 | 2011-07-20 | 抚顺市龙凤化工厂 | Preparation method of polyacrylamide with ultrahigh molecular weight |
-
2012
- 2012-04-20 CN CN 201210116744 patent/CN102633335B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999021801A1 (en) * | 1997-10-29 | 1999-05-06 | Prox T.E.C. Poprad, S.R.O. | Method for water purification based on the fenton reaction |
| US20060201861A1 (en) * | 2003-12-23 | 2006-09-14 | Young Wing Y | Water treatment mixture and system for use |
| CN101108751A (en) * | 2006-07-21 | 2008-01-23 | 中国石油化工股份有限公司 | Processing method of urban sewage sludge reduction |
| CN102127188A (en) * | 2010-01-19 | 2011-07-20 | 抚顺市龙凤化工厂 | Preparation method of polyacrylamide with ultrahigh molecular weight |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848933A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Preparation method and application of flocculating agent |
| CN103848933B (en) * | 2012-11-30 | 2016-03-09 | 中国石油天然气股份有限公司 | A kind of preparation method of flocculation agent and application thereof |
| CN105439266A (en) * | 2015-11-24 | 2016-03-30 | 宜兴市丰烨化学有限公司 | Acrylamide and dimethylamine containing flocculant and preparation method thereof |
| CN110040830A (en) * | 2019-05-30 | 2019-07-23 | 南华大学 | A kind of processing method of industrial wastewater |
| CN112694197A (en) * | 2021-03-24 | 2021-04-23 | 潍坊恒联特种纸有限公司 | Decolorizing process for color papermaking wastewater |
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| CN102633335B (en) | 2013-06-19 |
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Granted publication date: 20130619 Termination date: 20190420 |