CN1283561C - Polymerized silica aluminium sulphate coagulant and preparation method thereof - Google Patents
Polymerized silica aluminium sulphate coagulant and preparation method thereof Download PDFInfo
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- CN1283561C CN1283561C CN 03129500 CN03129500A CN1283561C CN 1283561 C CN1283561 C CN 1283561C CN 03129500 CN03129500 CN 03129500 CN 03129500 A CN03129500 A CN 03129500A CN 1283561 C CN1283561 C CN 1283561C
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- vitriol oil
- sodium silicate
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- 239000000701 coagulant Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 7
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 title abstract description 4
- 239000001164 aluminium sulphate Substances 0.000 title abstract 2
- 235000011128 aluminium sulphate Nutrition 0.000 title abstract 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 16
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 21
- 238000006116 polymerization reaction Methods 0.000 claims description 20
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 17
- 229940037003 alum Drugs 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 abstract description 36
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- 229960004029 silicic acid Drugs 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical class O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- -1 rare earth chloride Chemical class 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910001387 inorganic aluminate Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 235000012736 patent blue V Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a polymerized silica aluminium sulphate coagulant and a preparation method thereof. The coagulant is prepared from the raw materials of the weight percentage concentration of 5 to 15% of sodium silicate solutions, 50 to 80% of aluminum sulfate solutions and 90 to 98% of concentrated sulfuric acid; the weight mixture ratio of each raw material of the sodium silicate solutions to the aluminum sulfate solutions to the concentrated sulfuric acid is equal to 1: (1 to 2): (0.12 to 0.30). The preparation method of the coagulant comprises the process steps of sodium silicate solution dilution, two-time acid addition, aluminum sulfate compounding, etc. Compared with the prior art, the present invention has the advantages of simple processes, low cost, etc.
Description
Technical field
The present invention relates to a kind of inorganic polymer flocculant that is used for to water treatment, relate in particular to a kind of polymerization aluminium silicate-sulphate coagulating agent and preparation method thereof.
Background technology
Give coagulating agent or flocculation agent reply human body in the water treatment nontoxic, and cheap, be convenient to production application.Polymer aluminium silicate salt is a kind of novel flocculant that is composited by polymeric silicicacid and metallic aluminium salt, has performances such as adsorption bridging and charge neutrality, can adapt to different water quality and weather condition, and remaining aluminium content can reduce greatly in the water.The method that aluminium salt and polymeric silicicacid complex reaction is prepared polymer aluminium silicate salt is simple, economical.
CN1400172A has introduced a kind of preparation method of polysilicate aluminum sulphate flocculant: the solution that will contain water glass adds in the mineral acid, churning time 1-6 hour, making pH of mixed is 1-4, static curing time 2-24 hour, add the inorganic aluminate aqueous solution then, stirring reaction 1-6 hour, static curing time 12-24 hour must polysilicate aluminum sulphate flocculant.In this way water glass is mixed with acid, pH reduction process is easy to gelling, and the agitation condition of preparation process is difficult to control, and the time is long, unfavorable production.
CN1243099A introduces a kind of preparation method of active polysilicate flocculating agent, and this method is diluted water glass, adds the acid neutralization and makes pH value of solution less than 6, adds metal-salt, after 20-90 ℃ of boiling, adds the single or blended rare earth chloride of trace.This method has improved the stability of product, but needs heating and will add rare earth chloride, the processing requirement complexity.
CN1299783A has introduced a kind of preparation of polymerization alkali formula aluminium silicon flocculation agent, and this method reaches required molecular weight to silicic acid polymerization under alkaline condition, and adding Tai-Ace S 150 and sodium hydroxide polyreaction form polymerization alkali formula aluminium silicon flocculation agent under stirring fast then.This method needs to heat up in reactor, stirs not only complex process, and equipment cost height fast.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of technology polymerization aluminium silicate-sulphate coagulating agent simple, with low cost and preparation method thereof for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of polymerization aluminium silicate-sulphate coagulating agent, it is characterized in that, it is raw material that this coagulating agent adopts sodium silicate solution, alum liquor, the vitriol oil, the weight percent concentration of described sodium silicate solution is 5～15%, the weight percent concentration of described alum liquor is 50～80%, described vitriol oil weight percent concentration is 90～98%, and the weight proportion of each raw material is a sodium silicate solution: alum liquor: the vitriol oil=1: (1～2): (0.12～0.30).
The modulus of described sodium silicate solution is more than 3.
A kind of preparation method of polymerization aluminium silicate-sulphate coagulating agent is characterized in that, this method comprises following processing step:
(1) sodium silicate solution being diluted to weight percent concentration is 5～15%;
(2) adding weight percent concentration is 90～98% the vitriol oil, and this vitriol oil add-on be 0.08～0.15 times of (1) mesosilicic acid sodium solution weight, controls the solution pH value between 9～11, mixes and reacts 15～30 minutes;
(3) add the vitriol oil that weight percent concentration is 90-98% once more in the solution that (2) obtain, the add-on of this vitriol oil is 0.04～0.08 times of (2) middle solution weight, regulates pH value between 2～3;
(4) be 50～80% alum liquors by silica alumina ratio 1 with weight percent concentration: the solution that the weight ratio of (1～2) and (3) obtain carries out composite, stirs and react promptly to make polymerization aluminium silicate-sulphate coagulating agent product after 30～60 minutes.
Product polymerization aluminium silicate-sulphate of the present invention is the composite product of polymeric silicicacid and Tai-Ace S 150, and its proterties is the acid compound coagulant, the shape that is translucent, sky blue liquid.
Compared with prior art, the present invention has following characteristics:
1. preparation is carried out at normal temperatures and pressures, is not subjected to the season temperature Change to place restrictions on simple and easy to do, safe in utilization.The preparation starting material, ample supply and prompt delivery, preparation cost are cheap, suitable with sour aluminium price.
2. preparation process is short＜1.5 hours.
3. the purifying water effect of coagulating agent product has following characteristics with the Tai-Ace S 150 ratio:
(1) the coagulation effect low temperature of feeling better, the influence of low turbid former water is minimum, can effectively overcome Tai-Ace S 150 handling the problem that cryogenically turbid former water exists, and saves the alum agent, reduces production costs, and increases water quality.
The alumen ustum of (2) forming is big and closely knit, and settling velocity is fast, can improve the water production rate of precipitation (clarification) equipment.
(3) with this coagulating agent system water, the content of aluminium reduces significantly in the water supply quality, and the content of aluminium in the tap water effectively is controlled within the safety range of national regulation.
4. coagulating agent of the present invention also can be applicable to Industrial Wastewater Treatment.
5. the inventive method can not produce gel, and can control the molecular weight of product owing to add acid twice in preparation polymeric silicicacid process, and technology is simple, and the production time is short.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of preparation method of polymerization aluminium silicate-sulphate coagulating agent, this method comprises following processing step:
(1) sodium silicate solution being diluted to weight percent concentration is 15%;
(2) adding weight percent concentration is 98% the vitriol oil, and this vitriol oil add-on be 0.08 times of (1) mesosilicic acid sodium solution weight, and controlling the solution pH value is 11, mixes and reacts 30 minutes;
(3) adding weight percent concentration once more in the solution that (2) obtain is 98% the vitriol oil, and the add-on of this vitriol oil is 0.04 times of solution weight in (2), and regulating pH value is 3;
(4) carry out compositely with the weight percent concentration solution that to be 50% alum liquor obtain by 1: 1 weight ratio of silica alumina ratio and (3), stir and react and promptly make polymerization aluminium silicate-sulphate coagulating agent product after 60 minutes.
Embodiment 2
A kind of preparation method of polymerization aluminium silicate-sulphate coagulating agent, this method comprises following processing step:
(1) sodium silicate solution being diluted to weight percent concentration is 5%;
(2) adding weight percent concentration is 90% the vitriol oil, and this vitriol oil add-on be 0.15 times of (1) mesosilicic acid sodium solution weight, and controlling the solution pH value is 9, mixes and reacts 15 minutes;
(3) adding weight percent concentration once more in the solution that (2) obtain is 90% the vitriol oil, and the add-on of this vitriol oil is 0.08 times of solution weight in (2), and regulating pH value is 2;
(4) carry out compositely with the weight percent concentration solution that to be 80% alum liquor obtain by 1: 2 weight ratio of silica alumina ratio and (3), stir and react and promptly make polymerization aluminium silicate-sulphate coagulating agent product after 30 minutes.
Embodiment 3
A kind of preparation method of polymerization aluminium silicate-sulphate coagulating agent, this method comprises following processing step:
(1) sodium silicate solution being diluted to weight percent concentration is 10%;
(2) adding weight percent concentration is 95% the vitriol oil, and this vitriol oil add-on be 0.10 times of (1) mesosilicic acid sodium solution weight, and controlling the solution pH value is 10, mixes and reacts 20 minutes;
(3) adding weight percent concentration once more in the solution that (2) obtain is 95% the vitriol oil, and the add-on of this vitriol oil is 0.05 times of solution weight in (2), and regulating pH value is 3;
(4) carry out compositely with the weight percent concentration solution that to be 60% alum liquor obtain by 1: 2 weight ratio of silica alumina ratio and (3), stir and react and promptly make polymerization aluminium silicate-sulphate coagulating agent product after 40 minutes.
Claims (3)
1. polymerization aluminium silicate-sulphate coagulating agent, it is characterized in that, it is raw material that this coagulating agent adopts sodium silicate solution, alum liquor, the vitriol oil, the weight percent concentration of described sodium silicate solution is 5～15%, the weight percent concentration of described alum liquor is 50～80%, described vitriol oil weight percent concentration is 90～98%, and the weight proportion of each raw material is a sodium silicate solution: alum liquor: the vitriol oil=1: (1～2): (0.12～0.30).
2. polymerization aluminium silicate-sulphate coagulating agent according to claim 1 is characterized in that the modulus of described sodium silicate solution is more than 3.
3. the preparation method of a polymerization aluminium silicate-sulphate coagulating agent is characterized in that, this method comprises following processing step:
(1) sodium silicate solution being diluted to weight percent concentration is 5～15%;
(2) adding weight percent concentration is 90～98% the vitriol oil, and this vitriol oil add-on be 0.08～0.15 times of (1) mesosilicic acid sodium solution weight, controls the solution pH value between 9～11, mixes and reacts 15～30 minutes;
(3) add the vitriol oil that weight percent concentration is 90-98% once more in the solution that (2) obtain, the add-on of this vitriol oil is 0.04～0.08 times of (2) middle solution weight, regulates pH value between 2～3;
(4) be 50～80% alum liquors by silica alumina ratio 1 with weight percent concentration: the solution that the weight ratio of (1～2) and (3) obtain carries out composite, stirs and react promptly to make polymerization aluminium silicate-sulphate coagulating agent product after 30～60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129500 CN1283561C (en) | 2003-06-25 | 2003-06-25 | Polymerized silica aluminium sulphate coagulant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129500 CN1283561C (en) | 2003-06-25 | 2003-06-25 | Polymerized silica aluminium sulphate coagulant and preparation method thereof |
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| Publication Number | Publication Date |
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| CN1565985A CN1565985A (en) | 2005-01-19 |
| CN1283561C true CN1283561C (en) | 2006-11-08 |
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| CN 03129500 Expired - Fee Related CN1283561C (en) | 2003-06-25 | 2003-06-25 | Polymerized silica aluminium sulphate coagulant and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369827C (en) * | 2005-11-10 | 2008-02-20 | 暨南大学 | Process for producing basic poly aluminium sulfate silicate by one step method |
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| CN1565985A (en) | 2005-01-19 |
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Owner name: SHANGHAI URBAN WATER RESOURCES DEVELOPMENT AND UTI Free format text: FORMER OWNER: SHANGHAI CITY RUNNING WATER SHIBEI CO., LTD. Effective date: 20091002 Owner name: SHANGHAI CITY RUNNING WATER SHIBEI CO., LTD. Free format text: FORMER OWNER: SHANGHAI RUNNING WATER SHIBEI SCIENCE CO., LTD. Effective date: 20091002 |
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Effective date of registration: 20091002 Address after: No. 230, Xuchang Road, Shanghai, China: 200082 Patentee after: SHANGHAI NATIONAL ENGINEERING RESEARCH CENTER OF URBAN WATER RESOURCES Co.,Ltd. Address before: No. 206 Siping Road, Shanghai, China: 200086 Patentee before: SHANGHAI WATERWORKS SHIBEI Co.,Ltd. Effective date of registration: 20091002 Address after: No. 206 Siping Road, Shanghai, China: 200086 Patentee after: SHANGHAI WATERWORKS SHIBEI Co.,Ltd. Address before: No. 206 Siping Road, Shanghai, China: 200086 Patentee before: Shanghai Waterworks Shibei Co.,Ltd. |
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