CN102701365B - Flocculant for sewage treatment - Google Patents
Flocculant for sewage treatment Download PDFInfo
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- CN102701365B CN102701365B CN201210192293.9A CN201210192293A CN102701365B CN 102701365 B CN102701365 B CN 102701365B CN 201210192293 A CN201210192293 A CN 201210192293A CN 102701365 B CN102701365 B CN 102701365B
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- 239000010865 sewage Substances 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000005189 flocculation Methods 0.000 claims abstract description 25
- 230000016615 flocculation Effects 0.000 claims abstract description 25
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 13
- 229920002472 Starch Polymers 0.000 claims abstract description 10
- 239000008107 starch Substances 0.000 claims abstract description 10
- 235000019698 starch Nutrition 0.000 claims abstract description 10
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 8
- 235000019394 potassium persulphate Nutrition 0.000 claims abstract description 8
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- 239000005708 Sodium hypochlorite Substances 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 239000004159 Potassium persulphate Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 4
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- 235000019794 sodium silicate Nutrition 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 16
- 239000004575 stone Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229920001410 Microfiber Polymers 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- -1 Polypropylene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a flocculant for sewage treatment. The flocculant is prepared by compounding the raw materials of polyacrylamide, starch, sodium hypochlorite, sodium carboxymethylcellulose, sodium silicate, potassium peroxydisulfate, sodium sulfite and water. The prepared flocculant has the advantages of green and environmental protection, low cost, small addition amount, quick flocculation speed, little sludge, convenience and safety in use and the like.
Description
Technical field
The present invention relates to composite flocculant, is a kind of water treatment with the environmental protection flocculation agent of inorganic-organic hybrid cheaply specifically.
Background technology
In recent years, along with the fast development of China's national economy, the imbalance between supply and demand of water becomes increasingly conspicuous.Water shortage, water pollute to the development of China's national economy and industrial and agricultural production and people's life formed serious prestige rib.Waste water treating and reutilizing is the main path that solves water crisis.Flocculation sedimentation is the economy of disposing of sewage, easy method.In flocculation sedimentation, the selection of flocculation agent is the most key.In flocculation agent, there is the shortcomings such as dosage is large, moisture percentage in sewage sludge is high in inorganic flocculating agent.And existing organic polymer coargulator, though can overcome above-mentioned deficiency, cost is higher.The preparation of high efficiency, low cost flocculation agent becomes one of focus that investigators pay close attention to for this reason.
Polypropylene phthalein amine (Polyscrylamide) is called for short PAM, molecular formula is: [CH2-CH (CONH2)] n, it is wire high molecular polymer, molecular weight is between 400-2000 ten thousand, solid phase prod outward appearance is white or yellow powder slightly, liquid state is colourless thickness colloidal, soluble in water, when temperature surpasses 120 ℃, easily decomposes.Have bibliographical information, foreign study person finds that the degraded product of polyacrylamide can be used as the nutritive substance of bacterium vital movement, and nutritive substance can promote the degraded of polyacrylamide again conversely.Therefore become application one of flocculation agent widely the most, yet the monomer acrylamide of polyacrylamide is a kind of carcinogenic substance, how current many countries have reduced its application.
A large amount of practices show, two or more flocculation agent is formed to a kind of composite flocculation agent by composite or reaction to be applied, can overcome the deficiency of using single flocculation agent, realize and having complementary advantages, and consumption is few, cost is low, efficiency is high, therefore, composite flocculation agent is research emphasis and the developing direction of flocculation agent from now on.
Summary of the invention
The invention provides the technology of preparing of the flocculation agent of the inorganic-organic hybrid of high efficiency, low cost for a kind of water treatment.
For realizing the concrete technical scheme that the object of the invention adopts, be:
The flocculation agent that sewage disposal is used, is characterized in that, its material composition comprises starch, polyacrylamide, clorox, Xylo-Mucine, water glass, Potassium Persulphate, S-WAT and water, and makes according to following proportioning and step:
1) in 10g starch, add 100ml water, be placed in stirrer, control rotating speed 150-250 r.p.m, 1 ℃ of temperature 90 scholar, gelatinization was cooled to room temperature after 30 minutes;
2) by 5g relative molecular mass, be that the polyacrylamide of 50-500 ten thousand is dissolved in 75ml water, adding concentration is 10% aqueous sodium hypochlorite solution 50ml, first control rotating speed 200 r.p.m states after 8-12 minute, then to control rotating speed be 100 r.p.m, at room temperature react 0.5-4 hour;
3) getting pH value is that 3-4, the modulus sodium silicate solution 500mL that is 3.5-4 is in there-necked flask, and be placed in thermostat water bath, by step 1), 2) prepared product add, add 20g Xylo-Mucine simultaneously, stirring and dissolving, when bath temperature reaches 70 ℃, add 0.001-0.003g Potassium Persulphate and 0.006-0.008g S-WAT as linking agent, water bath with thermostatic control reaction 5h, obtains flocculant solution.
The present invention, by great many of experiments, has selected said components proportioning and corresponding preparation parameter.It is cationic superpolymer that polyacrylamide in flocculant solution of the present invention reacts by Hofmann the polyvinylamine generating, and starch is oxidized into anionic superpolymer in preparation process, so by effects such as ionic linkage, secondary valence bond power and machinery windings, be combined into the polyamphoteric electrolyte with cancellated ultra-high molecular weight between superpolymer.In not only can charge neutrality waste water colloidal particle and particle with negative charge, and the reticulated structure of ultra-high molecular weight has bridging and net is caught effect, easily and colloidal particle and particle form large flocs unit, reach significant flocculating effect.Starch and carboxymethyl cellulose are the abundantest natural macromolecular materials of originating, and owing to having replaced part polyethylene amine with starch in mixture, cost can decline to a great extent.In addition owing to further having adopted cellulose sodium carboxymethyl in mixture, it is the sodium salt of carboxymethyl cellulose ether, belongs to anionic ether of cellulose, is easy to be dispersed in water into transparent colloidal solution, when pH value is 2-3, there will be precipitation, meet polyvalent metal salt and also can react appearance precipitation.Therefore the flocculation agent obtaining has the broken glue ability of inorganic flocculating agent and the rapid flocculation of organic polymer coargulator concurrently.
Beneficial effect of the present invention is, prepared flocculation agent has advantages of environmental protection, with low cost, and in paper mill wastewater, application can make CODcr significantly reduce, and the microfibre rate of recovery is high.In stone sewage, application only needs the consumption of 10-15g/m3, can make the turbidity of stone sewage be down to 60NTU left and right from being greater than 20000NTU.This flocculation agent also can be used as the drainage retention aid in papermaking, can effectively improve the retention of microfibre, reduces waste water load.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described.
Embodiment 1:
1) in 10g Tapioca Starch, add 100ml water, be placed in stirrer, control rotating speed 150 r.p.m, 1 ℃ of temperature 90 scholar, gelatinization was cooled to room temperature after 30 minutes;
2) polyacrylamide that is 1,000,000 by 5g relative molecular mass is dissolved in 75ml water, and adding concentration is 10% aqueous sodium hypochlorite solution 50ml, first controls rotating speed 200 r.p.m states after 8 minutes, then to control rotating speed be 100 r.p.m, at room temperature reacts 2 hours;
3) getting pH value is that 3-4, the modulus sodium silicate solution 500mL that is 3.5 is in there-necked flask, and be placed in thermostat water bath, by step 1), 2) prepared product add, add 20g Xylo-Mucine simultaneously, stirring and dissolving, when bath temperature reaches 70 ℃, add 0.001g Potassium Persulphate and 0.007g S-WAT as linking agent, water bath with thermostatic control reaction 5h, obtains flocculant solution.
The waste water of flocculation agent Qu Mou stone material factory factory (CODcr=700mg/L, turbidity is 18000NTU, PH:8～9) is tested.Waste water is stopped in equalizing tank 4 hours, with balanced water quality and quantity, and tentatively remove suspended substance larger in waste water; Waste water after balanced water quality enters coagulation basin, stops 20min, according to the consumption of 10g/ m3, adds above-mentioned flocculant solution, and water outlet COD can drop in 79mg/L, and turbidity drops in 60NTU.
Embodiment 2:
1) in 10g tapioca flour, add 100ml water, be placed in stirrer, control rotating speed 200 r.p.m, 1 ℃ of temperature 90 scholar, gelatinization was cooled to room temperature after 30 minutes;
2) polyacrylamide that is 5,000,000 by 5g relative molecular mass is dissolved in 75ml water, and adding concentration is 10% aqueous sodium hypochlorite solution 50ml, first controls rotating speed 200 r.p.m states after 10 minutes, then to control rotating speed be 100 r.p.m, at room temperature reacts 1 hour;
3) getting pH value is that 3-4, the modulus sodium silicate solution 500mL that is 3.8 is in there-necked flask, and be placed in thermostat water bath, by step 1), 2) prepared product add, add 20g Xylo-Mucine simultaneously, stirring and dissolving, when bath temperature reaches 70 ℃, add 0.002g Potassium Persulphate and 0.008g as linking agent, water bath with thermostatic control reaction 5h, obtains flocculant solution.
The waste water of flocculation agent Qu Mou stone material factory factory (CODcr=700mg/L, turbidity is 18000NTU, PH:8～9) is tested.Waste water is stopped in equalizing tank 4 hours, with balanced water quality and quantity, and tentatively remove suspended substance larger in waste water; Waste water after balanced water quality enters coagulation basin, stops 20min, according to the consumption of 10g/ m3, adds above-mentioned flocculant solution, and water outlet COD can drop in 79mg/L, and turbidity drops in 60NTU.
Embodiment 3:
1) in 10g Semen Maydis powder, add 100ml water, be placed in stirrer, control rotating speed 250 r.p.m, 1 ℃ of temperature 90 scholar, gelatinization was cooled to room temperature after 30 minutes;
2) polyacrylamide that is 5,000,000 by 5g relative molecular mass is dissolved in 75ml water, and adding concentration is 10% aqueous sodium hypochlorite solution 50ml, first controls rotating speed 200 r.p.m states after 8 minutes, then to control rotating speed be 100 r.p.m, at room temperature reacts 4 hours;
3) getting pH value is that 3-4, the modulus sodium silicate solution 500mL that is 4 is in there-necked flask, and be placed in thermostat water bath, by step 1), 2) prepared product add, add 20g Xylo-Mucine simultaneously, stirring and dissolving, when bath temperature reaches 70 ℃, add 0.003g Potassium Persulphate and 0.006g as linking agent, water bath with thermostatic control reaction 5h, obtains flocculant solution.
The waste water of flocculation agent Qu Mou stone material factory factory (CODcr=700mg/L, turbidity is 18000NTU, PH:8～9) is tested.Waste water is stopped in equalizing tank 4 hours, with balanced water quality and quantity, and tentatively remove suspended substance larger in waste water; Waste water after balanced water quality enters coagulation basin, stops 20min, according to the consumption of 10g/ m3, adds above-mentioned flocculant solution, and water outlet COD can drop in 79mg/L, and turbidity drops in 60NTU.
Finally it should be noted that, the foregoing is only preferred embodiment of the present invention, rather than the restriction to technical solution of the present invention, any being equal to that the technology of the present invention feature is done, replaces or corresponding improvement, still within protection scope of the present invention.
Claims (2)
1. the flocculation agent that sewage disposal is used, is characterized in that, its material composition comprises starch, polyacrylamide, clorox, Xylo-Mucine, water glass, Potassium Persulphate, S-WAT and water, and makes according to following proportioning and step:
1) in 10g starch, add 100ml water, be placed in stirrer, control rotating speed 150-250 r.p.m, 1 ℃ of temperature 90 scholar, gelatinization was cooled to room temperature after 30 minutes;
2) by 5g relative molecular mass, be that the polyacrylamide of 50-500 ten thousand is dissolved in 75ml water, adding concentration is 10% aqueous sodium hypochlorite solution 50ml, first control rotating speed 200 r.p.m states after 8-12 minute, then to control rotating speed be 100 r.p.m, at room temperature react 0.5-4 hour;
3) getting pH value is that 3-4, the modulus sodium silicate solution 500mL that is 3.5-4 is in there-necked flask, and be placed in thermostat water bath, by step 1), 2) prepared product add, add 20g Xylo-Mucine simultaneously, stirring and dissolving, when bath temperature reaches 70 ℃, add 0.001-0.003g Potassium Persulphate and 0.006-0.008g S-WAT as linking agent, water bath with thermostatic control reaction 5h, obtains flocculant solution.
2. the flocculation agent that a kind of sewage disposal according to claim 1 is used, is characterized in that described starch is Tapioca Starch, Semen Maydis powder, tapioca flour or wheat-flour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192293.9A CN102701365B (en) | 2012-06-12 | 2012-06-12 | Flocculant for sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192293.9A CN102701365B (en) | 2012-06-12 | 2012-06-12 | Flocculant for sewage treatment |
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| Publication Number | Publication Date |
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| CN102701365A CN102701365A (en) | 2012-10-03 |
| CN102701365B true CN102701365B (en) | 2014-02-19 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674519A (en) * | 2012-06-13 | 2012-09-19 | 何斌 | Preparation method of flocculant for sewage treatment |
| CN103588270B (en) * | 2013-11-11 | 2015-07-22 | 陕西科技大学 | Method for directly treating papermaking wastewater with hydrolyzed collagen and inorganic metal salts |
| CN104003494A (en) * | 2014-06-13 | 2014-08-27 | 武汉易德绿环保科技开发有限公司 | Preparation process of inorganic and organic compounded flocculants for water processing |
| CN104876312A (en) * | 2015-05-15 | 2015-09-02 | 王英英 | Sewage treatment agent prepared from fruit peels and preparation process thereof |
| CN104843841A (en) * | 2015-05-23 | 2015-08-19 | 张家港市山牧新材料技术开发有限公司 | Sewage flocculant |
| CN105776576A (en) * | 2016-05-26 | 2016-07-20 | 许婷 | Papermaking wastewater treating agent and preparing method thereof |
| CN106995269A (en) * | 2017-04-12 | 2017-08-01 | 芜湖扬展新材料科技服务有限公司 | A kind of dehydration of papermaking sludge composite flocculant |
| CN107473350A (en) * | 2017-08-24 | 2017-12-15 | 江苏亚峰科技集团有限公司 | A kind of sewage disposal precipitating reagent |
| CN108840374A (en) * | 2018-06-05 | 2018-11-20 | 胡莎 | A kind of polymer-modified water treatment agent of maltodextrin and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196334A (en) * | 1997-04-11 | 1998-10-21 | 广州市环境保护科学研究所 | Method for preparing cation/amphoteric graft polyacrylamide flocculating agent |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN101935377A (en) * | 2010-07-26 | 2011-01-05 | 北京化工大学 | Method for preparing flocculating agent used for solid-liquid separation treatment of waste drilling fluid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164492A (en) * | 1987-12-17 | 1989-06-28 | Osaka City | High molecular heavy metal sequestering agent |
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2012
- 2012-06-12 CN CN201210192293.9A patent/CN102701365B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196334A (en) * | 1997-04-11 | 1998-10-21 | 广州市环境保护科学研究所 | Method for preparing cation/amphoteric graft polyacrylamide flocculating agent |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN101935377A (en) * | 2010-07-26 | 2011-01-05 | 北京化工大学 | Method for preparing flocculating agent used for solid-liquid separation treatment of waste drilling fluid |
Non-Patent Citations (1)
| Title |
|---|
| JP平1-164492A 1989.06.28 |
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Effective date of registration: 20180524 Address after: 410205 4, 401, 402, A4 building, 27 Yuan Lu Yuan Yuan, Wen Xuan Road, Changsha hi tech Development Zone, Hunan. Patentee after: Hunan Colton water Co., Ltd. Address before: 410018 307 building, 7 Shanghai Road, 633 South Shaoshan Road, Yuhua District, Changsha, Hunan Patentee before: Deng Jianping |
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Address after: 410205 4, 401, 402, A4 building, 27 Yuan Lu Yuan Yuan, Wen Xuan Road, Changsha hi tech Development Zone, Hunan. Patentee after: Hunan Colton Water Group Co.,Ltd. Address before: 410205 4, 401, 402, A4 building, 27 Yuan Lu Yuan Yuan, Wen Xuan Road, Changsha hi tech Development Zone, Hunan. Patentee before: Hunan Colton Water Co.,Ltd. |