CN102659229B - Environment-friendly composite flocculant - Google Patents
Environment-friendly composite flocculant Download PDFInfo
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- CN102659229B CN102659229B CN201210188048.0A CN201210188048A CN102659229B CN 102659229 B CN102659229 B CN 102659229B CN 201210188048 A CN201210188048 A CN 201210188048A CN 102659229 B CN102659229 B CN 102659229B
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- Prior art keywords
- water
- bath
- starch
- adds
- flocculation agent
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- 239000002131 composite material Substances 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910001868 water Inorganic materials 0.000 claims abstract description 26
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005189 flocculation Methods 0.000 claims abstract description 23
- 230000016615 flocculation Effects 0.000 claims abstract description 23
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920002472 Starch Polymers 0.000 claims abstract description 8
- 239000008107 starch Substances 0.000 claims abstract description 8
- 235000019698 starch Nutrition 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000967 suction filtration Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- -1 Xylo-Mucine Chemical compound 0.000 claims description 3
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 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 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 229920002401 polyacrylamide Polymers 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 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
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 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
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to an environment-friendly composite flocculant which is prepared by taking epoxy chloropropane, triethylamine, starch, sodium carboxymethyl cellulose, water and the like as raw materials, and performing pretreatment, cationic modification and the like. The prepared flocculant disclosed by the invention has the advantages of greenness, environmental friendliness, low cost, low dosage, high flocculation speed, less sludge, high removal rate of various indexes in waste water after treatment, capability of realizing up-to-standard discharge or recycling, simple production and preparation process, simplicity and convenience in use of a product and the like.
Description
Technical field
The present invention relates to a kind of 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, as a kind of important method of wastewater treatment, has a wide range of applications in water technology.In flocculation sedimentation, the selection of flocculation agent is the most key, and the kind of flocculation agent, character, performance are the key factors that affects flocculation treatment effect and cost.In flocculation agent, there is the shortcomings such as dosage is large, moisture percentage in sewage sludge is high in inorganic flocculating agent, and its application is restricted.In organic polymer coargulator, because Syn-Organic flocculants cost of manufacture is high, and exist a certain amount of residual monomer, inevitably brought toxicity, polypropylene phthalein amine (Polyscrylamide) is called for short PAM, molecular formula is: [CH2-CH (CONH2)] n is wire high molecular polymer, and 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.The preparation of high efficiency, low cost flocculation agent becomes one of focus that investigators pay close attention to for this reason.
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:
An environment-friendly type composite flocculation agent, is characterized in that,, its raw material comprises epoxy chloropropane, triethylamine, starch, Xylo-Mucine, dehydrated alcohol, H
2o
2-FeSO
4,, NaOH, Nacl and water, and make according to following proportioning and step:
1) 20-30ml epoxy chloropropane and the excessive excessive flask of putting into of triethylamine are inserted to ice bath pot, airtight stirring reaction 3-4 h, more than standing 5 h of ice bath, gets upper strata liquid after layering;
2) starch 50-55g is added in 150-180mL distilled water, standing and add a certain amount of absolute ethyl alcohol and stirring after water-bath 2-2.5h in 40-50 ℃ of warm water, after suction filtration by filter residue dewatered drying;
3) take step 2) prepared product 20g, the NaCl that adds 50-60ml 0.1% adds 20-25g Xylo-Mucine, stirring and dissolving simultaneously, with certain density NaOH solution, in constant temperature water bath, stir alkalization for some time again, when bath temperature reaches 70 ℃, add 0.005-0.009g H
2o
2-FeSO
4initiator activates 60 S, then the upper strata liquid that adds excessive step 1) to prepare, water bath with thermostatic control reaction 4-5h;
4) the cooling rear suction filtration of reactant, then uses deionized water rinsing, and gains are dried and preserved, and obtains flocculant solution.
The present invention, by great many of experiments, has selected starch and organic constituent proportioning and corresponding preparation parameter, prepares a kind of flocculation agent, and select sanitary sewage, molasses alcohol waste liquid to carry out applied research to it through pre-treatment, cation-modified etc.
Beneficial effect of the present invention is,
1) flocculating effect is good, and sedimentation speed is fast; The clearance of the waste water indices after processing is high, can qualified discharge or reuse;
2) reagent dosage is few, and the addition of composite flocculation agent is 12-16mg/L, saves processing cost;
3) process for producing is simple, and product is easy to use.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described.
Embodiment 1:
1) 20ml epoxy chloropropane and the excessive excessive flask of putting into of triethylamine are inserted to ice bath pot, airtight stirring reaction 4 h, more than standing 5 h of ice bath, get upper strata liquid after layering;
2) tapioca (flour) 55g is added in 160mL distilled water, standing and add a certain amount of absolute ethyl alcohol and stirring after water-bath 2 h in 40 ℃ of warm water, after suction filtration by filter residue dewatered drying;
3) take step 2) prepared product 20g, the NaCl that adds 60ml 0.1% adds 20g Xylo-Mucine, stirring and dissolving simultaneously, with certain density NaOH solution, in constant temperature water bath, stir alkalization for some time again, when bath temperature reaches 70 ℃, add 0.005g H
2o
2-FeSO
4initiator activates 60 S, then the upper strata liquid that adds excessive step 1) to prepare, water bath with thermostatic control reaction 4h;
4) the cooling rear suction filtration of reactant, then uses deionized water rinsing, and gains are dried and preserved, and obtains flocculant solution.
The flocculant solution that this embodiment is obtained, for electroplating wastewater processing, adds according to the amount of 12mg/L, can make electroplating wastewater COD, turbidity, SS reduce respectively 73%, 90%, 71%.
Embodiment 2:
1) 25ml epoxy chloropropane and the excessive excessive flask of putting into of triethylamine are inserted to ice bath pot, airtight stirring reaction 3.5 h, more than standing 5 h of ice bath, get upper strata liquid after layering;
2) ground melon starch 52g is added in 160mL distilled water, standing and add a certain amount of absolute ethyl alcohol and stirring after water-bath 2.2h in 45 ℃ of warm water, after suction filtration by filter residue dewatered drying;
3) take step 2) prepared product 20g, the NaCl that adds 55ml 0.1% adds 23g Xylo-Mucine, stirring and dissolving simultaneously, with certain density NaOH solution, in constant temperature water bath, stir alkalization for some time again, when bath temperature reaches 70 ℃, add 0.007g H
2o
2-FeSO
4initiator activates 60 S, then the upper strata liquid that adds excessive step 1) to prepare, water bath with thermostatic control reaction 4-5h;
4) the cooling rear suction filtration of reactant, then uses deionized water rinsing, and gains are dried and preserved, and obtains flocculant solution.
The flocculant solution that this embodiment is obtained, for electroplating wastewater processing, adds according to the amount of 12mg/L, can make electroplating wastewater COD, turbidity, SS reduce respectively 74%, 91%, 72%.
Embodiment 3:
1) 30ml epoxy chloropropane and the excessive excessive flask of putting into of triethylamine are inserted to ice bath pot, airtight stirring reaction 3-4 h, more than standing 5 h of ice bath, gets upper strata liquid after layering;
2) W-Gum 50g is added in 180mL distilled water, standing and add a certain amount of absolute ethyl alcohol and stirring after water-bath 2.5h in 50 ℃ of warm water, after suction filtration by filter residue dewatered drying;
3) take step 2) prepared product 20g, the NaCl that adds 50ml 0.1% adds 25g Xylo-Mucine, stirring and dissolving simultaneously, with certain density NaOH solution, in constant temperature water bath, stir alkalization for some time again, when bath temperature reaches 70 ℃, add 0.009g H
2o
2-FeSO
4initiator activates 60 S, then the upper strata liquid that adds excessive step 1) to prepare, water bath with thermostatic control reaction 5h;
4) the cooling rear suction filtration of reactant, then uses deionized water rinsing, and gains are dried and preserved, and obtains flocculant solution.
The flocculant solution that this embodiment is obtained, for electroplating wastewater processing, adds according to the amount of 12mg/L, can make electroplating wastewater COD, turbidity, SS reduce respectively 73%, 92%, 73%.
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. an environment-friendly type composite flocculation agent, is characterized in that, its raw material comprises epoxy chloropropane, triethylamine, starch, Xylo-Mucine, dehydrated alcohol, H
2o
2-FeSO
4,, NaOH, NaCl and water, and make according to following proportioning and step:
1) 20-30ml epoxy chloropropane and the excessive excessive flask of putting into of triethylamine are inserted to ice bath pot, airtight stirring reaction 3-4 h, more than standing 5 h of ice bath, gets upper strata liquid after layering;
2) starch 50-55g is added in 150-180mL distilled water, standing and add a certain amount of absolute ethyl alcohol and stirring after water-bath 2-2.5h in 40-50 ℃ of warm water, after suction filtration by filter residue dewatered drying;
3) take step 2) prepared product 20g, the NaCl that adds 50-60ml 0.1% adds 20-25g Xylo-Mucine, stirring and dissolving simultaneously, with certain density NaOH solution, in constant temperature water bath, stir alkalization for some time again, when bath temperature reaches 70 ℃, add 0.005-0.009g H
2o
2-FeSO
4initiator activates 60 S, then the upper strata liquid that adds excessive step 1) to prepare, water bath with thermostatic control reaction 4-5h;
4) the cooling rear suction filtration of reactant, then uses deionized water rinsing, and gains are dried and preserved, and obtains flocculation agent.
2. a kind of environment-friendly type composite flocculation agent according to claim 1, 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 |
|---|---|---|---|
| CN201210188048.0A CN102659229B (en) | 2012-06-08 | 2012-06-08 | Environment-friendly composite flocculant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188048.0A CN102659229B (en) | 2012-06-08 | 2012-06-08 | Environment-friendly composite flocculant |
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| CN102659229A CN102659229A (en) | 2012-09-12 |
| CN102659229B true CN102659229B (en) | 2014-04-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102701348A (en) * | 2012-06-12 | 2012-10-03 | 徐梁冰 | Preparation method for environment-friendly composite flocculant |
| CN105906006B (en) * | 2015-10-16 | 2018-08-17 | 湖北文理学院 | A kind of preparation method of living drainage inorganic agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2129718A2 (en) * | 2007-03-27 | 2009-12-09 | Buckman Laboratories International, Inc. | Compositions and methods to control the growth of microorganisms in aqueous systems |
| CN101423275A (en) * | 2008-11-25 | 2009-05-06 | 西安科技大学 | Method for preparing composite flocculant |
| CN101665280B (en) * | 2009-10-19 | 2011-05-04 | 大连理工大学 | Method for waste water treatment and preparing magnetic flocculant by reclaimed flocculant |
| CN101921015B (en) * | 2010-08-17 | 2012-07-18 | 江门市慧信净水材料有限公司 | Novel inorganic-organic composite macromolecular decolorizing flocculant and preparation method thereof |
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