CN103304015A - PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof - Google Patents
PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof Download PDFInfo
- Publication number
- CN103304015A CN103304015A CN2013101867404A CN201310186740A CN103304015A CN 103304015 A CN103304015 A CN 103304015A CN 2013101867404 A CN2013101867404 A CN 2013101867404A CN 201310186740 A CN201310186740 A CN 201310186740A CN 103304015 A CN103304015 A CN 103304015A
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- CN
- China
- Prior art keywords
- pdmdaac
- ammonium chloride
- diallyl ammonium
- pac
- water treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000701 coagulant Substances 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920000642 polymer Polymers 0.000 title abstract 3
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000008399 tap water Substances 0.000 claims abstract description 4
- 235000020679 tap water Nutrition 0.000 claims abstract description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 42
- -1 alkyl diallyl ammonium chloride Chemical compound 0.000 claims description 24
- 229920001519 homopolymer Polymers 0.000 claims description 17
- 229920002521 macromolecule Polymers 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 6
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims description 5
- IOMDIVZAGXCCAC-UHFFFAOYSA-M diethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](CC)(CC)CC=C IOMDIVZAGXCCAC-UHFFFAOYSA-M 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 239000010840 domestic wastewater Substances 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 6
- 229920000592 inorganic polymer Polymers 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000001112 coagulating effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical group [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a commercial PAC-PDMDAAC composite polymer coagulant for water treatment and a preparation method thereof. The coagulant is a solid and an inorganic-organic polymeric flocculant complex product, and has special functions of two compounds as well as a synergistic effect. The composite coagulant is prepared through the following steps of proportioning materials, mixing and grinding with PAC (polyaluminium chloride) as the main raw material and by adding less PDMDAAC, and the finished product is a powdery solid. The commercial PAC-PDMDAAC composite polymer coagulant for water treatment is convenient in transportation, storage and use, is suitable for treatment of industrial source water, tap water and industrial and domestic waste water, and has the characteristics of high efficiency, economical efficiency and the like.
Description
Technical field
The present invention relates to a kind of inorganic and organic polymer coagulant double crossing product, preparation method and in the application of water treatment field, relate in particular to commercial grade PAC-PDMDAAC(poly aluminium chloride-Poly Dimethyl Diallyl Ammonium Chloride) complex coagulation medicament, preparation method and in the application of water treatment field.
Background technology
The homopolymer of alkyl diallyl ammonium chloride or multipolymer are the water-soluble organic macromolecule materials with property, are a kind of good cationic coagulating agent, form industrialization abroad already.Since on its macromolecular chain with the positive charge density height, good water solubility, molecular weight is moderate, has coagulation and the dual performance of sterilization, obtains practical application as the non-toxic cation coagulating agent at tap water already abroad.Domestic expensive because of it in recent years, use still seldom, and China uses more inorganic polymer coagulant poly aluminium chloride and has formed distinct Chinese characteristics.
Inorganic-organic complex coagulating agent both at home and abroad still is in conceptual phase, and mostly is composite dose of liquid greatly at present, does not also have industrialized efficient, cheap and transportation, stores easily composite dose of solid.
Summary of the invention
The purpose of this invention is to provide a kind of efficient, cheap novel built high-molecular coagulant adopting, for the treatment of industrial water source, tap water and industry and sanitary sewage etc., provide the compound method of this coagulating agent simultaneously.
For solving the problems of the technologies described above, adopt following technical scheme to realize,
A kind of water treatment PAC-PDMDAAC composite macromolecule coagulant is characterized in that: described composite macromolecule coagulant is that homopolymer or the multipolymer by poly aluminium chloride, alkyl diallyl ammonium chloride constitutes.
The mass ratio of the homopolymer of described poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:1～5.
Preferably, the mass ratio of the homopolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:3.
The homopolymer of described alkyl diallyl ammonium chloride is one or both mixing in Poly Dimethyl Diallyl Ammonium Chloride and the poly-diethyl diallyl ammonium chloride.
The mass ratio of the multipolymer of described poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:1～5.
Preferably, the mass ratio of the multipolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:3.
To be dimethyl diallyl ammonium chloride mix with one or both of the multipolymer of the multipolymer of acrylamide and diethyl diallyl ammonium chloride and acrylamide the multipolymer of described alkyl diallyl ammonium chloride.
A kind of water treatment comprises the steps: with the compound method of PAC-PDMDAAC composite macromolecule coagulant
A. with homopolymer or the copolymer p DMDAAC(Poly Dimethyl Diallyl Ammonium Chloride of alkyl diallyl ammonium chloride) water is configured to 20～30% mass concentration at normal temperatures;
B. with material and Powdered poly aluminium chloride in a) step, add in proportion in the defibrination pulverizing mill, at normal temperatures and pressures, after mixing with 1400 rev/mins speed, form 60～100 order pulverulent solids.
Preferably, the mass concentration after the described poly aluminium chloride dilution is 26%.
The invention has the advantages that: the inorganic polymer coagulant poly aluminium chloride is water-soluble can to produce the aluminium hydroxide structure flco with powerful positive charge, in and electronegative particle in the waste water; The homopolymer of organic polymer coargulator alkyl diallyl ammonium chloride and with the multipolymer of acrylamide, soluble in water, structure is huge, and particle tool net in the water is caught effect, and the tool disinfection.Composite product can be given full play to both synergies, not only can reduce the consumption of inorganic polymer coagulant significantly, can also reduce the COD value of former water, and reduces sludge quantity.
Embodiment
Be further elaborated explanation below in conjunction with the present invention of embodiment.
Embodiment 1
Certain paper mill comprehensive wastewater, undressed water quality is: COD=5250mg/L, SS=2050mg/L, 1200 times of colourities, PH6.5, normal temperature.Add 30mg/L composite mixing high-molecular coagulant adopting of the present invention, through twice mixing, 500 rev/mins for the first time, mixed 1 minute, 300 rev/mins speed was mixed 5 minutes for the second time, precipitated 15 minutes then.
The mass ratio of the homopolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:3 in the composite mixing high-molecular coagulant adopting, and preparation technology is as follows:
A), at first will be configured to 26% mass concentration under the homopolymer of alkyl diallyl ammonium chloride or the copolymer p DMDAAC water normal temperature;
B), with material and poly aluminium chloride in a) step, add simultaneously in proportion in the defibrination pulverizing mill, at normal temperatures and pressures, after mixing with 1400 rev/mins speed, form 60～100 purpose powdery products.
Handling back water quality becomes: COD=410mg/L, and clearance reaches 92.2%; 120 times of colourities, clearance reaches 90%; SS=12mg/L, clearance reaches 99.4%; PH6.4.Water quality is limpid behind coagulating sedimentation.
Embodiment 2
Limit, the Changjiang river water source factory: about 1000,500, the 100NTU of raw water turbidity, 7.15,22 ℃ of PH, composite mixing high-molecular coagulant adopting dosage are respectively 20,10,5mg/L, and water turbidity sees Table 1 all less than 3.0NTU behind the coagulating sedimentation.
Table 1 adds the usefulness that water is handled in the compounding coagulation agent
Embodiment 3
Composite high-molecular coagulant adopting is that the mass ratio of the multipolymer of poly aluminium chloride and alkyl diallyl ammonium chloride and acrylamide is 1000: 3 in the present embodiment, and preparation technology is with embodiment 1.
Adopt waste water, the handling procedure identical with embodiment 1, when composite multipolymer coagulant charging quantity was 30mg/L, handling afterwards, water quality was:: COD is 421mg/L, and clearance is 92.0 %; 128 times of colourities, clearance 89.3%; SS is 10mg/L, clearance 99.5%; PH6.4.Water quality is limpid behind the coagulating sedimentation.
Embodiment 4
With the former water (turbidity 500.7NTU, 7.15,22 ℃ of PH) of the Changjiang river water factory among the embodiment 2, handle with the compounding coagulation agent of different composite amounts, the equal 10mg/L of dosage adopts following handling procedure: 500 rev/mins for the first time, mixed 1 minute; 300 rev/mins for the second time, mixed 5 minutes; Precipitate 15 minutes then.Result sees Table 2;
Table 2 adds the usefulness of dissimilar compound coagulants, different composite dosage processing water
As can be seen from the table, press poly aluminium chloride: alkyl diallyl ammonium chloride homopolymer=1000: the compound coagulant that (1～5) is composite all can make residual turbidity reach requirement.The composite dosage of organic floculant surpasses 3 ‰, and residual turbidity reduces not obvious, and composite cost significantly increases, and is the best with composite dosage 3 ‰ then.
Press poly aluminium chloride: alkyl diallyl ammonium chloride/acrylamide copolymer=1000: the compound coagulant that (1～5) is composite all can make residual turbidity reach requirement.The composite dosage of organic floculant surpasses 3 ‰, and residual turbidity reduces not obvious, and composite cost obviously increases, and is the best with composite dosage 3 ‰.
Embodiment 5
In compound process, PDMDAAC homopolymer or multipolymer need dilute earlier, and weaker concn directly influences the coagulation performance of product.The weaker concn height, moisture increases, and the inorganic polymer coagulant amount reduces, and usefulness reduces; Weaker concn is low, PDMDAAC homopolymer or multipolymer skewness in inorganic polymer coagulant, and usefulness reduces; Weaker concn the best with 26%.
Be example with the Changjiang river Yuan Shui (turbidity 98.5NTU, 7.15,22 ℃ of PH), all add compound coagulant 5mg/L, press the follow procedure coagulation: 500 rev/mins for the first time, mixed 1 minute; 300 rev/mins for the second time, mixed 5 minutes; Precipitate 15 minutes.
The compound coagulant that table 3 is prepared with different weaker concns, the usefulness of processing water
| The compound coagulant of different concns (%) preparation | 20 | 22 | 24 | 26 | 28 | 30 |
| Residual turbidity (NTU) | 4.5 | 3.2 | 2.7 | 1.6 | 2.5 | 3.6 |
As can be known, the control weaker concn is handled the water residual turbidity and all is lower than 5NTU 20%～30% from table, but is the best with 26% weaker concn.
Above-described embodiment is only in order to technical scheme of the present invention to be described but not design of the present invention and protection domain are limited; those of ordinary skill of the present invention is made amendment to technical scheme of the present invention or is equal to replacement; and not breaking away from aim and the scope of technical scheme, it all should be encompassed in the claim scope of the present invention.
Claims (9)
1. water treatment PAC-PDMDAAC composite macromolecule coagulant is characterized in that: described composite macromolecule coagulant is that homopolymer or the multipolymer by poly aluminium chloride, alkyl diallyl ammonium chloride constitutes.
2. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 1, it is characterized in that: the mass ratio of the homopolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:1～5.
3. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 2, it is characterized in that: the mass ratio of the homopolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:3.
4. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 1, it is characterized in that: the homopolymer of described alkyl diallyl ammonium chloride is one or both mixing in Poly Dimethyl Diallyl Ammonium Chloride and the poly-diethyl diallyl ammonium chloride.
5. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 1, it is characterized in that: the mass ratio of the multipolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:1～5.
6. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 5, it is characterized in that: the mass ratio of the multipolymer of poly aluminium chloride and alkyl diallyl ammonium chloride is 1000:3.
7. a kind of water treatment PAC-PDMDAAC composite macromolecule coagulant according to claim 1 is characterized in that: to be dimethyl diallyl ammonium chloride mix with one or both of the multipolymer of the multipolymer of acrylamide and diethyl diallyl ammonium chloride and acrylamide the multipolymer of described alkyl diallyl ammonium chloride.
8. a water treatment PAC-PDMDAAC composite macromolecule coagulant is characterized in that: comprise the steps:
A. homopolymer or the copolymer p DMDAAC water with the alkyl diallyl ammonium chloride is configured to 20～30% mass concentration at normal temperatures;
B. with material and Powdered poly aluminium chloride in a) step, add in proportion in the defibrination pulverizing mill, at normal temperatures and pressures, after mixing with 1400 rev/mins speed, form 60～100 order pulverulent solids.
9. a kind of compound method of handling the composite macromolecule coagulant of tap water, industrial source water and city domestic sewage according to claim 8 is characterized in that: the mass concentration after the described poly aluminium chloride dilution is 26%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101867404A CN103304015A (en) | 2013-05-20 | 2013-05-20 | PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101867404A CN103304015A (en) | 2013-05-20 | 2013-05-20 | PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof |
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| CN103304015A true CN103304015A (en) | 2013-09-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261651A (en) * | 2014-09-19 | 2015-01-07 | 山东瑞特精细化工有限公司 | Polyacrylamide sludge dehydrating agent and preparation method thereof |
| CN105565454A (en) * | 2015-12-31 | 2016-05-11 | 浙江大川新材料股份有限公司 | Preparation method of inorganic/organic flocculating agent compounded water purifying agent |
| CN105621565A (en) * | 2014-11-07 | 2016-06-01 | 中国石油天然气股份有限公司 | Composite water treatment agent for oilfield wastewater, preparation method thereof and oilfield wastewater treatment method |
| CN107162383A (en) * | 2017-05-09 | 2017-09-15 | 同济大学 | A kind of efficiently low chlorine conditioner and its application in high solid digested sludge dehydration |
| CN108529836A (en) * | 2018-04-23 | 2018-09-14 | 杜瑞 | A kind of swollen dedicated high-efficiency sedimentation agent of rising of sludge |
| CN110156121A (en) * | 2018-03-27 | 2019-08-23 | 新疆水处理工程技术研究中心有限公司 | A kind of high efficiency composition magnetic flocculant and preparation method thereof |
| KR102331750B1 (en) * | 2021-03-29 | 2021-12-01 | 한국서부발전 주식회사 | Treatment method for process water |
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2013
- 2013-05-20 CN CN2013101867404A patent/CN103304015A/en active Pending
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261651A (en) * | 2014-09-19 | 2015-01-07 | 山东瑞特精细化工有限公司 | Polyacrylamide sludge dehydrating agent and preparation method thereof |
| CN104261651B (en) * | 2014-09-19 | 2015-12-30 | 山东瑞特精细化工有限公司 | A kind of polyacrylamide sludge dehydrating agent and preparation method thereof |
| CN105621565A (en) * | 2014-11-07 | 2016-06-01 | 中国石油天然气股份有限公司 | Composite water treatment agent for oilfield wastewater, preparation method thereof and oilfield wastewater treatment method |
| CN105565454A (en) * | 2015-12-31 | 2016-05-11 | 浙江大川新材料股份有限公司 | Preparation method of inorganic/organic flocculating agent compounded water purifying agent |
| CN107162383A (en) * | 2017-05-09 | 2017-09-15 | 同济大学 | A kind of efficiently low chlorine conditioner and its application in high solid digested sludge dehydration |
| CN110156121A (en) * | 2018-03-27 | 2019-08-23 | 新疆水处理工程技术研究中心有限公司 | A kind of high efficiency composition magnetic flocculant and preparation method thereof |
| CN108529836A (en) * | 2018-04-23 | 2018-09-14 | 杜瑞 | A kind of swollen dedicated high-efficiency sedimentation agent of rising of sludge |
| CN108529836B (en) * | 2018-04-23 | 2021-03-26 | 杜瑞 | Efficient settling agent special for sludge expansion |
| KR102331750B1 (en) * | 2021-03-29 | 2021-12-01 | 한국서부발전 주식회사 | Treatment method for process water |
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Application publication date: 20130918 |