CN101830476B - Method for preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag - Google Patents
Method for preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag Download PDFInfo
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- CN101830476B CN101830476B CN2009100106787A CN200910010678A CN101830476B CN 101830476 B CN101830476 B CN 101830476B CN 2009100106787 A CN2009100106787 A CN 2009100106787A CN 200910010678 A CN200910010678 A CN 200910010678A CN 101830476 B CN101830476 B CN 101830476B
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- 239000002699 waste material Substances 0.000 title claims abstract description 40
- 239000002893 slag Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004058 oil shale Substances 0.000 title claims abstract description 17
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 54
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 37
- 239000004411 aluminium Substances 0.000 claims description 23
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 9
- 238000009835 boiling Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000002425 crystallisation Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000006210 lotion Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000001117 sulphuric acid Substances 0.000 claims description 4
- 235000011149 sulphuric acid Nutrition 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000002689 soil Substances 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000012847 fine chemical Substances 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- 238000007670 refining Methods 0.000 description 8
- 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 description 6
- 239000000693 micelle Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 159000000013 aluminium salts Chemical class 0.000 description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000003079 shale oil Substances 0.000 description 3
- 235000001018 Hibiscus sabdariffa Nutrition 0.000 description 2
- 235000005291 Rumex acetosa Nutrition 0.000 description 2
- 240000007001 Rumex acetosella Species 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000413 hydrolysate Substances 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 235000003513 sheep sorrel Nutrition 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for preparing a polymeric ferric aluminum silicate flocculant from waste oil shale slag. The method comprises the following steps of: separating SiO2 in the waste oil shale slag to form a solid phase by adopting acid dipping; turning Al2O3 and Fe2O3 into aluminum salt and ferric salt; dissolving in a liquid phase; polymerizing the ferric aluminum solution into polymeric ferric aluminum under an alkaline condition; and re-polymerizing the polymeric ferric aluminum and polysilicic acid according to a certain mol ratio to obtain a polymeric ferric aluminum silicate flocculant. By using the method, the polymeric ferric aluminum silicate flocculant can be prepared from the waste oil shale slag, thus, the waste oil shale slag is fully utilized, the utilization rate is improved, the economic benefits are increased, turning waste into valuable is realized, a great amount of slag is avoided to be accumulated, the soil occupation is reduced and the environmental pollution is lessened. The method has simple process procedures, small investment and low cost and is used for preparing the polymeric ferric aluminum silicate flocculant as a water treating agent with remarkable treating effect on oil-bearing wastewater, thereby being a brilliant-prospect industrialized method for the fine chemical industry and the comprehensive utilization of the waste oil shale slag.
Description
One, technical field
The present invention relates to a kind of method with preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag.
Two, background technology
China's oil shale aboundresources, recyclable shale oil stock number is 12,000,000,000 tons, mainly is distributed in Huadian, Jilin Province, farming peace, ground such as Maoming, Guangdong, Fushun occupy the 4th in the world.The main mode of utilizing of oil shale resource is to refine shale oil and direct combustion power generation.With Fushun is example, utilizes every year oil shale to produce nearly 400,000 tons of shale oil, and the bituminous shale waste slag that produced in a year can reach 1,100 ten thousand tons.Effectively utilize the method for oil page or leaf waste residue also few now, cause the bituminous shale waste slag bulk deposition, not only take large-area soil, but also have bigger problem of environmental pollution.Therefore how comprehensive utilization bituminous shale waste slag better improves the added value of oil shale resource, is the technical problem that needs to be resolved hurrily.Be rich in kaolinite (Al in China's bituminous shale waste slag
2O
3SiO
22H
2O), promptly the clay silico-aluminate wherein contains 50～70%SiO
2, 10～25%Al
2O
3And a spot of Fe
2O
3As seen containing the main component for preparing polymeric aluminium ferrum silicate in the bituminous shale waste slag, utilize preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag that it is turned waste into wealth, is a kind of effective way.Polymeric aluminium ferrum silicate flocculant is a kind of water conditioner, is used for sewage is carried out purifying treatment.At present, the technology for preparing polymeric aluminium ferrum silicate flocculant with oil shale is not appeared in the newspapers.
Three, summary of the invention
The purpose of this invention is to provide a kind of method with preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag, adopt this method that bituminous shale waste slag is turned waste into wealth, thereby solve land occupation and problem of environmental pollution, better reached the purpose of oil shale comprehensive utilization simultaneously.
For achieving the above object, the technical solution used in the present invention is:
1. bituminous shale waste slag is ground to below 100 orders, at 550-750 ℃ of following roasting 2-3 hour;
2. the solid-to-liquid ratio adding concentration according to 1: 3 is the sulphuric acid soln of 30%-40% in the waste residue after roasting, under little condition of boiling acidleach 4-6 hour, heat filtering, ferro-aluminum solution and filter residue, with gained filter residue washing 1-2 time, the gained washing lotion is incorporated ferro-aluminum solution into one time;
3. will go up step gained ferro-aluminum solution evaporation to the density of solution is 1.38g/cm
3, crystallisation by cooling filters, and the gained crystal is used to prepare Tai-Ace S 150, and gained filtrate is for containing sour ferro-aluminum solution;
4. according to 1: 3 solid-to-liquid ratio, will go up the step gained and contain sour ferro-aluminum solution and mix, and under little condition of boiling, react 4-6 hour with initiate bituminous shale waste slag, get secondary ferro-aluminum solution, crystallisation by cooling filters, the gained crystal is used to prepare Tai-Ace S 150, and gained filtrate is three secondary aluminium ferrous solutions;
5. measure the volumetric molar concentration that goes up iron in the step gained three secondary aluminium ferrous solutions, in solution, add sodium silicate solution, guarantee that the mol ratio of silicon and iron is 1 in the solution: 5-10, add the sodium hydroxide solution that concentration is 4mol/L then, the pH value that makes solution is between 1-1.2, and ageing 3 hours under 40 ℃ of temperature, make polymeric aluminium ferrum silicate flocculant.
The present invention adopts acidleach with the SiO in the bituminous shale waste slag
2Be separated to solid phase, with Al
2O
3And Fe
2O
3Become aluminium salt and molysite and be dissolved in liquid phase, the iron aluminum solutions aggregates into polymeric ferric aluminum under alkaline condition, and polymerization iron aluminium and poly-silicic acid are pressed the certain mol proportion repolymerization and promptly got polymerization aluminium ferrosilicon salt.The hydrolysate of aluminium salt and molysite has the cohesion and the characteristic of throwing out concurrently, and conclusion is got up, and in the water treatment coagulation process, Hydrolysis Reactions of Metal-ions and polymerization process just takes place after adding aluminium salt and molysite.At this moment, the various products of energy strong adsorption hydrolysis of water-borne glue grain and polyreaction.The positively charged multinuclear coordination ion that is adsorbed can compression double electric layer, reduces zeta-potential, makes that the maximum potential energy that repels reduces between micelle, thereby micelle is taken off surely, brings into play cohesion.But as multinuclear polymkeric substance is by two or more micelle institute co-absorbed, then this polymkeric substance just can be built bridge two or more micelle bondings, performance throwing out, throwing out enlarge and just progressively form flocs unit (also claiming alumen ustum), thereby finish whole coagulation process.Poly silicate aluminium ferric flocculating agent is as high molecular polymer, and when treating water, the balance that adds the poly aluminium iron silicate in the waste water is destroyed.Al
3+, Fe
3+Be hydrolyzed into the colloid of positively charged, silicic acid polymerization becomes electronegative polyphosphazene polymer silicic acid, and as the nucleus of condensation of coagulating agent, absorption Al (OH)
3, Fe (OH)
3Colloid and suspended solid.Active silicic acid and Al
3+, Fe
3+The hydrolysate opposite charge is very big to the zeta-potential influence of hydrolytic precipitation thing, quickens flocculating settling.
Adopt aforesaid method to prepare polymeric aluminium ferrum silicate flocculant, bituminous shale waste slag is fully used, improved utilization ratio with bituminous shale waste slag, increased economic benefit, avoid the bulk deposition of waste residue when turning waste into wealth, reduced the appropriation of land amount, reduced environmental pollution.Present method technological process is simple, invests for a short time, and cost is low, and prepared water conditioner---polymeric aluminium ferrum silicate flocculant to the obvious processing effect of oily(waste)water, is better than other commercially available poly-iron product.Be a kind of bituminous shale waste slag fine chemistry industry, comprehensive utilization industrialization method that has prospect.
Four, embodiment
Embodiment 1:
1. take by weighing be ground to 100 orders following, at 2 hours bituminous shale waste slag of 550 ℃ of following roastings, 100.51 grams;
2. add 30% sulphuric acid soln 300.73 grams according to 1: 3 solid-to-liquid ratio, acid-leaching reaction is 5 hours under little condition of boiling, heat filtering, ferro-aluminum solution and filter residue, with gained filter residue washing 1 time, the gained washing lotion is incorporated ferro-aluminum solution into one time, obtains ferro-aluminum solution 265ml one time;
3. will go up step gained ferro-aluminum solution evaporation to the density of solution is 1.38g/cm
3, crystallisation by cooling filters, and gets 132ml respectively and contains sour ferro-aluminum solution and crystal, and crystal is used to prepare Tai-Ace S 150;
4. according to 1: 3 solid-to-liquid ratio, will go up the step gained and contain sour ferro-aluminum solution and mix, and under little condition of boiling, react 4 hours with the initiate bituminous shale waste slag of 45 grams, get secondary ferro-aluminum solution, crystallisation by cooling filters, get 85.5ml three secondary aluminium ferrous solution and crystal respectively, crystal is used to prepare Tai-Ace S 150;
5. the volumetric molar concentration of iron and aluminium is respectively 0.75mol and 0.88mol in the gained three secondary aluminium ferrous solutions of last step of mensuration, adding volumetric molar concentration in solution is the water glass liquid of 1.429mol/l, guarantee that the mol ratio of silicon and iron is 1: 10 in the solution, adding volumetric molar concentration then is 4mol/l sodium hydroxide solution 8ml, the pH value that makes solution is between 1-1.2, and ageing 3 hours under 40 ℃ of temperature, make polymeric aluminium ferrum silicate flocculant.
Adopt the water conditioner of this examples preparation---polymeric aluminium ferrum silicate flocculant, be the thick transparent liquid of sorrel, product index is as follows:
20 ℃ of density are 1.35g/cm
3Effective constituent (Fe+Al) 4.86%; Basicity is about 9%.
Treatment effect effect (dosage is 90mg/l) to oily(waste)water:
Oil refining sewerage COD is 6000mg/l before handling, and handling back COD is 4200mg/l, and the COD clearance reaches 30%;
The oil refining sewerage oleaginousness is 60mg/l before handling, and handling the back oleaginousness is 112mg/l, and the clearance of oil is 80% in the oil refining sewerage;
The oil refining sewerage turbidity is 112NTU before handling, and handling the back turbidity is 1.6NTU, and turbidity removal rate reaches more than 98%.
Embodiment 2:
1. take by weighing be ground to 100 orders following, at 2 hours bituminous shale waste slag of 650 ℃ of following roastings, 100.03 grams;
2. add 36% sulphuric acid soln 300.06 grams according to 1: 3 solid-to-liquid ratio, under little condition of boiling, acidleach 4.5 hours, heat filtering, ferro-aluminum solution and filter residue, with gained filter residue washing 1 time, the gained washing lotion is incorporated ferro-aluminum solution into one time, obtains ferro-aluminum solution 400ml one time;
3. will go up ferro-aluminum solution evaporation of step gained to solution density is 1.38g/cm
3, crystallisation by cooling filters, and gets 240ml respectively and contains sour ferro-aluminum solution and crystal, and crystal is used to prepare Tai-Ace S 150;
4. according to 1: 3 solid-to-liquid ratio, will go up the step gained and contain sour ferro-aluminum solution and mix, and under little condition of boiling, react 5 hours with the initiate bituminous shale waste slag of 110 grams, get secondary ferro-aluminum solution, crystallisation by cooling filters, get 85.5ml three secondary aluminium ferrous solution and crystal respectively, crystal is used to prepare Tai-Ace S 150;
5. the volumetric molar concentration of iron and aluminium is respectively 0.78mol and 0.80mol in the gained three secondary aluminium ferrous solutions of last step of mensuration, adding volumetric molar concentration in solution is the sodium silicate solution of 1.429mol/l, guarantee that the mol ratio of silicon and iron is 1: 7 in the solution, adding volumetric molar concentration then is 4mol/l sodium hydroxide solution 10ml, the pH value that makes solution is between 1-1.2, and ageing 3 hours under 40 ℃ of temperature, make the polymer aluminium silicate ferrous solution.
Adopt water conditioner---the polymeric aluminium ferrum silicate flocculant of present embodiment preparation, be the thick transparent liquid of sorrel, product index is as follows:
20 ℃ of density are 1.36g/cm
3Effective constituent (Fe+Al) 5.1%; Basicity is about 16%.
Treatment effect effect (dosage is 90mg/l) to oily(waste)water:
Oil refining sewerage COD is 6000mg/l before handling, and handling back COD is 4500mg/l, and the COD clearance reaches 25%;
The oil refining sewerage oleaginousness is 600mg/l before handling, and handling the back oleaginousness is 108mg/l, and the clearance of oil is 82% in the oil refining sewerage;
The oil refining sewerage turbidity is 112NTU before handling, and handling the back turbidity is 1.0NTU, and turbidity removal rate reaches more than 99%.
Claims (1)
1. the method with preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag is characterized in that: comprise the steps:
1. bituminous shale waste slag is ground to below 100 orders, at 550-750 ℃ of following roasting 2-3 hour;
2. the solid-to-liquid ratio adding concentration according to 1: 3 is the sulphuric acid soln of 30%-40% in the waste residue after roasting, under little condition of boiling acid-leaching reaction 4-6 hour, heat filtering, ferro-aluminum solution and filter residue, with gained filter residue washing 1-2 time, the gained washing lotion is incorporated ferro-aluminum solution into one time;
3. will go up ferro-aluminum solution evaporation of step gained to solution density is 1.38g/cm
3, crystallisation by cooling filters, and gained filtrate is for containing sour ferro-aluminum solution;
4. according to 1: 3 solid-to-liquid ratio, will go up the step gained and contain sour ferro-aluminum solution and mixes, and reaction 4-6 hour under little condition of boiling with initiate bituminous shale waste slag, must secondary ferro-aluminum solution, crystallisation by cooling, filtration, gained filtrate is three secondary aluminium ferrous solutions;
5. measure the volumetric molar concentration that goes up iron in the step gained three secondary aluminium ferrous solutions, in solution, add sodium silicate solution, guarantee that the mol ratio of silicon and iron is 1 in the solution: 5-10, add the sodium hydroxide solution that concentration is 4mol/L then, the pH value that makes solution is between 1-1.2, and ageing 3 hours under 40 ℃ of temperature, make polymeric aluminium ferrum silicate flocculant.
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| CN102092828B (en) * | 2010-12-08 | 2012-10-03 | 东北电力大学 | Method for preparing polymer calcium-aluminum silicate coagulant from carbide slag |
| CN105858786A (en) * | 2016-04-27 | 2016-08-17 | 陈书仁 | Sewage purifying agent |
| CN105858838B (en) * | 2016-04-29 | 2019-03-26 | 绍兴文理学院 | A kind of sludge incineration source flocculant and preparation method thereof |
| CN112551658A (en) * | 2020-11-17 | 2021-03-26 | 鄂尔多斯应用技术学院 | High-alumina fly ash defluorination flocculant and preparation method and application thereof |
| CN113461126B (en) * | 2021-07-08 | 2022-02-01 | 陇东学院 | Coagulant and application thereof in water-based paint wastewater |
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|---|---|---|---|---|
| CN1994881A (en) * | 2006-12-29 | 2007-07-11 | 中国铝业股份有限公司 | Method for preparing polysilicate aluminium molten iron processing agent using bauxite gangue |
| CN101125697A (en) * | 2007-08-24 | 2008-02-20 | 中国石油大学(华东) | A method of producing coagulant for water treatment with coal gangue |
| CN101182061A (en) * | 2007-11-06 | 2008-05-21 | 陈兆东 | Method for producing highly-effective compound polysilicate aluminum and ferric flocculant by coal ash and kaolinite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994881A (en) * | 2006-12-29 | 2007-07-11 | 中国铝业股份有限公司 | Method for preparing polysilicate aluminium molten iron processing agent using bauxite gangue |
| CN101125697A (en) * | 2007-08-24 | 2008-02-20 | 中国石油大学(华东) | A method of producing coagulant for water treatment with coal gangue |
| CN101182061A (en) * | 2007-11-06 | 2008-05-21 | 陈兆东 | Method for producing highly-effective compound polysilicate aluminum and ferric flocculant by coal ash and kaolinite |
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