CN104003494A - Preparation process of inorganic and organic compounded flocculants for water processing - Google Patents
Preparation process of inorganic and organic compounded flocculants for water processing Download PDFInfo
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- CN104003494A CN104003494A CN201410262998.2A CN201410262998A CN104003494A CN 104003494 A CN104003494 A CN 104003494A CN 201410262998 A CN201410262998 A CN 201410262998A CN 104003494 A CN104003494 A CN 104003494A
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Abstract
The invention relates to a preparation process of inorganic and organic compounded flocculants for water processing. The raw materials of the inorganic and organic compounded flocculants comprise starch, polyacrylamide, sodium hypochlorite, sodium carboxy methyl cellulose, sodium silicate, potassium peroxodisulfate, sodium sulfite and water. The preparation process of the inorganic and organic compounded flocculants for water processing has the advantages that the prepared flocculants has the advantages of being environmentally friendly and low in cost, CODcr can be largely reduced when the flocculants are applied to papermaking comprehensive waste water, the recovery rate of fine fibers is high, the retention rate of the fine fibers can be effectively improved, and the waste water load is reduced.
Description
Technical field
The present invention relates to a kind of technology of preparing of composite flocculant, is a kind of water treatment environmental protection flocculation agent of inorganic-organic composite 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.The life that water shortage, water pollute the development to China's national economy and industrial and agricultural production and people has 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 exceedes 120 DEG C, 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 again the degraded of polyacrylamide conversely.Therefore become application one of flocculation agent widely the most, but 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 that uses 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
For the above-mentioned the deficiencies in the prior art of customer service, the invention provides a kind of technology of preparing of flocculation agent of inorganic, organic composite of water treatment.
For realizing the concrete technical scheme that the object of the invention adopts be:
A flocculation agent for water treatment, 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 5g starch, add 50ml water, be placed in stirrer, control rotating speed 160-240 r.p.m, 1 DEG C of temperature 95 scholar, gelatinization was cooled to room temperature after 40 minutes;
(2) be that the polyacrylamide of 30-300 ten thousand is dissolved in 50ml water by 3g relative molecular mass, adding concentration is 10% aqueous sodium hypochlorite solution 30ml, first control rotating speed 200 r.p.m states after 9-11 minute, then to control rotating speed be 100r.p.m, at room temperature react 0.8-3.5 hour;
(3) get PH value for 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, the prepared product of step (1), (2) is added, add 10g Xylo-Mucine simultaneously, stirring and dissolving, in the time that bath temperature reaches 75 DEG C, add 0.0015-0.0025g Potassium Persulphate and 0.004-0.0065g S-WAT as linking agent, water bath with thermostatic control reaction 4h, 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, therefore between superpolymer, be combined into the polyamphoteric electrolyte with cancellated ultra-high molecular weight by effects such as ionic linkage, secondary valence bond power and machinery windings.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, there will be precipitation in PH value during for 2-3, meet polyvalent metal salt and also can react and occur 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:
(CODcr=700mg/L, turbidity is 18000NTU to the waste water of factory of flocculation agent Qu Mou stone material factory, PH: 8～9) test.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, adds above-mentioned flocculant solution according to the consumption of 10g/ m3, and water outlet COD can drop in 79mg/L, and turbidity drops in 60NTU.
Embodiment 2:
(CODcr=700mg/L, turbidity is 18000NTU to the waste water of factory of flocculation agent Qu Mou stone material factory, PH: 8～9) test.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, adds above-mentioned flocculant solution according to the consumption of 10g/ m3, and water outlet COD can drop in 79mg/L, and turbidity drops in 60NTU.
Embodiment 3:
(CODcr=700mg/L, turbidity is 18000NTU to the waste water of factory of flocculation agent Qu Mou stone material factory, PH: 8～9) test.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, adds above-mentioned flocculant solution according to the consumption of 10g/ m3, 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, instead of 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 (1)
1. the flocculation agent of a water treatment, it is characterized in that, its material composition comprises starch, polyacrylamide, clorox, Xylo-Mucine, water glass, Potassium Persulphate, S-WAT and water, and make according to following proportioning and step: (1) adds 50ml water in 5g starch, be placed in stirrer, control rotating speed 160-240 r.p.m, 1 DEG C of temperature 95 scholar, gelatinization was cooled to room temperature after 40 minutes; (2) be that the polyacrylamide of 30-300 ten thousand is dissolved in 50ml water by 3g relative molecular mass, adding concentration is 10% aqueous sodium hypochlorite solution 30ml, first control rotating speed 200 r.p.m states after 9-11 minute, then to control rotating speed be 100r.p.m, at room temperature react 0.8-3.5 hour; (3) get PH value for 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, the prepared product of step (1), (2) is added, add 10g Xylo-Mucine simultaneously, stirring and dissolving, in the time that bath temperature reaches 75 DEG C, add 0.0015-0.0025g Potassium Persulphate and 0.004-0.0065g S-WAT as linking agent, water bath with thermostatic control reaction 4h, obtains flocculant solution.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107739079A (en) * | 2017-11-25 | 2018-02-27 | 长沙秋点兵信息科技有限公司 | A kind of sewage-treating agent and preparation method thereof |
| CN109879392A (en) * | 2019-03-21 | 2019-06-14 | 辽宁大学 | A kind of modified starch/Polyamine Complex and preparation method thereof and in the application for reducing stone wastewater turbidity |
| PL424396A1 (en) * | 2018-01-29 | 2019-08-12 | Zachodniopomorski Uniwersytet Technologiczny W Szczecinie | Nanocomposite flocculant of starch graft copolymers and method for obtaining nanocomposite flocculants of starch graft copolymers |
| CN111573811A (en) * | 2020-05-22 | 2020-08-25 | 中科乐美环保科技有限公司 | Composite cationic polyacrylamide flocculant and preparation method thereof |
| CN114369968A (en) * | 2020-10-14 | 2022-04-19 | 刘耀红 | Special agent for sludge papermaking and preparation method thereof |
| CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
Citations (2)
| 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 |
| CN102701365A (en) * | 2012-06-12 | 2012-10-03 | 徐梁冰 | Flocculant for sewage treatment |
-
2014
- 2014-06-13 CN CN201410262998.2A patent/CN104003494A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701365A (en) * | 2012-06-12 | 2012-10-03 | 徐梁冰 | Flocculant for sewage treatment |
| CN102674519A (en) * | 2012-06-13 | 2012-09-19 | 何斌 | Preparation method of flocculant for sewage treatment |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107739079A (en) * | 2017-11-25 | 2018-02-27 | 长沙秋点兵信息科技有限公司 | A kind of sewage-treating agent and preparation method thereof |
| PL424396A1 (en) * | 2018-01-29 | 2019-08-12 | Zachodniopomorski Uniwersytet Technologiczny W Szczecinie | Nanocomposite flocculant of starch graft copolymers and method for obtaining nanocomposite flocculants of starch graft copolymers |
| CN109879392A (en) * | 2019-03-21 | 2019-06-14 | 辽宁大学 | A kind of modified starch/Polyamine Complex and preparation method thereof and in the application for reducing stone wastewater turbidity |
| CN111573811A (en) * | 2020-05-22 | 2020-08-25 | 中科乐美环保科技有限公司 | Composite cationic polyacrylamide flocculant and preparation method thereof |
| CN114369968A (en) * | 2020-10-14 | 2022-04-19 | 刘耀红 | Special agent for sludge papermaking and preparation method thereof |
| CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
| CN115432908B (en) * | 2022-09-15 | 2023-12-26 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
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Application publication date: 20140827 |