CN100542976C - Method with flyash and kaolin production compound aluminium silicate polymer ferric flocculant - Google Patents
Method with flyash and kaolin production compound aluminium silicate polymer ferric flocculant Download PDFInfo
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- CN100542976C CN100542976C CNB2007101899202A CN200710189920A CN100542976C CN 100542976 C CN100542976 C CN 100542976C CN B2007101899202 A CNB2007101899202 A CN B2007101899202A CN 200710189920 A CN200710189920 A CN 200710189920A CN 100542976 C CN100542976 C CN 100542976C
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- 239000010881 fly ash Substances 0.000 title claims abstract description 33
- 239000005995 Aluminium silicate Substances 0.000 title claims abstract description 31
- 235000012211 aluminium silicate Nutrition 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229910000323 aluminium silicate Inorganic materials 0.000 title claims description 9
- -1 compound aluminium silicate Chemical class 0.000 title claims description 9
- 229920000642 polymer Polymers 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000706 filtrate Substances 0.000 claims abstract description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 239000000292 calcium oxide Substances 0.000 claims abstract description 8
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 18
- 239000002893 slag Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 15
- 239000004411 aluminium Substances 0.000 abstract description 11
- 150000001875 compounds Chemical class 0.000 abstract description 11
- 239000000047 product Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000008394 flocculating agent Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 208000024827 Alzheimer disease Diseases 0.000 abstract description 3
- 206010039966 Senile dementia Diseases 0.000 abstract description 3
- 239000012263 liquid product Substances 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 12
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 8
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 6
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 6
- 230000016615 flocculation Effects 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 244000208060 Lawsonia inermis Species 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004042 decolorization Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000413 hydrolysate Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 229960004029 silicic acid Drugs 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical compound CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 235000001018 Hibiscus sabdariffa Nutrition 0.000 description 1
- 108010009736 Protein Hydrolysates Proteins 0.000 description 1
- 235000005291 Rumex acetosa Nutrition 0.000 description 1
- 240000007001 Rumex acetosella Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000003513 sheep sorrel Nutrition 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of method of producing the highly-effective compound polysilicate aluminum ferric flocculant with flyash and kaolin, it is with flyash, kaolin, unslaked lime, water was heated 4-8 hour under 50-120 degree celsius temperature condition behind the thorough mixing by a certain percentage, the naturally cooling after-filtration, filtrate adjust pH to 6～10 get filtrate I; Add concentration in the gained filter residue and be the 4-8 hour naturally cooling after-filtration of under 50-120 degree celsius temperature condition, heating behind 36.7% the technical hydrochloric acid mixing, filtrate II; Filtrate I and filtrate II were mixed in 1: 1 by volume, stir, adjust pH to 3～5, obtain the prepared liquid product of the present invention after leaving standstill, this product combines the advantage of aluminium system and iron-based flocculating agent, stability and purifying water effect are superior, and the water after the processing does not contain aluminium and other objectionable constituent, can effectively reduce the generation of senile dementia; And as raw material, production cost is low with waste material flyash for present method, and the added value of product height has good economic benefits, environmental benefit and social benefit.
Description
One. technical field:
The present invention relates to the production method of a kind of water treatment, particularly relate to a kind of method of producing compound aluminium silicate polymer ferric flocculant liquid with flyash and kaolin with polymeric flocculant.
Two. background technology:
The raising with people's living standard of developing rapidly along with industrial and agricultural production, water consumption and wastewater discharge increase day by day, make limited water resource satisfy growing production of people and living needs, waste discharge is carried out effective purifying treatment and recycles urgently day by day, and various traditional water purification agent can not satisfy the requirement of purification of water quality and environmental protection, health care.It is two big classes that the present inorganic flocculating agent that generally uses has aluminium system and iron, and polymerize aluminum chloride (PAC) and bodied ferric sulfate (PFS) are respectively typical case's representatives of aluminium system and iron-based flocculating agent, and both have different flocculating properties.
Polymerize aluminum chloride (PAC) claim aluminium chlorohydroxide again, is between AlCl
3And Al (OH)
3Between hydrolysate, product has two kinds of liquid and solids, liquid PAC is faint yellow or water white transparency liquid, solid PAC color and luster and liquid product are similar, present lenticular, vitreum shape or arborescens along with the difference of basicity.The method of the PAC of China's production at present mainly contains metallic aluminium (comprising aluminium ash, aluminium slag) method, active aluminium hydroxide method, aluminium sesquioxide (comprising bauxitic clay, coal gangue etc.) method, crystal aluminum chloride method.PAC passes through Al
3+Salt hydrolysis-polymerisate comes " pending waste water " is electrically neutralized, takes off processing such as steady and adsorption bridging, and generation coarse particles flocs unit removes water-borne glue body particle or colloid pollution thing.For handling sanitary sewage, trade effluent etc., have advantages such as coagulation performance is good, flco is big, consumption is few, precipitation is fast, applied widely; And having the paper waste, dyeing waste water etc. of higher COD, colourity and pH value for processing, its percent of decolourization is low, uses to be subjected to certain limitation; Especially aspect purifying drinking water, the residual aluminum of water is higher relatively, and the aluminium of human body Excessive Intake may cause senile dementia, is a very important pathogenesis.Bodied ferric sulfate (PFS) claim sulfovinic acid iron again, is a kind of middle hydrolysate that is prefabricated into by molysite, and liquid product is sorrel or scarlet viscous fluid, and solid phase prod is faint yellow or the lark resin.The method of producing PFS mainly contains the direct oxidation production technique of titanium white by product method, nitration mixture oxidizing process, warm air oxidation, hydrogen peroxide catalyzer, microwave catalysis method etc.The PFS hydrolysate is an ironic hydroxide, and in hydrolysis, polymerization reaction take place generates the multinuclear hydroxo complex, and adsorption bridging also generates the macrobead flocs unit to reach the water purification effect.PFS has good effect at aspects such as handling fluoride waste, high-fluorine drinking water, heavy metal-containing waste water, compares with aluminium salt, and the molysite flocs unit is than great, and the sediment volume is less, but since the color of molysite make it range of application and be restricted.
At present, the annual emissions of China's coal-burning power plant's flyash has reached more than 100,000,000 ton, and its utilization ratio only is about 30%, and a large amount of flyash are piled up in ash, have not only taken a large amount of land resources, and severe contamination environment.Therefore, the comprehensive utilization of flyash is one of popular topic in the environmental protection research field always, how fully to develop flyash, improves the added value of its utilization, and making it turns waste into wealth, and this is the difficult problem that the current techniques field will solve.Because flyash and poly aluminium iron silicate have similar elementary composition, it is the method for feedstock production poly aluminium iron silicate that related scientific research worker has explored with flyash, (name is called " synthetic method of poly aluminium iron silicate " as Chinese patent CN1266038C, the patent No. is: the synthetic method that discloses a kind of poly aluminium iron silicate 200410012422.7), it be with flyash and ironmaking slag be main raw material, preparation technology has comprised the preparation of polymeric ferric aluminum, totally eight step processes such as the preparation of polymeric silicicacid and the preparation of polymeric aluminium ferrum silicate etc., there is following weak point in this method: its employed supplementary material component is more, includes flyash, the ironmaking slag, sodium hydroxide, yellow soda ash, sulfuric acid and hydrochloric acid; And raw material there is particular requirement, Fe
2O
3Content is the ironmaking waste residue 20-40% of 40-50%, Fe
2O
3Content is 4%-10%, Al
2O
3Content is 20-30%, SiO
2Content is the flyash of 40-60%; And for example (name is called " with the method for flyash and ferrous sulfate production poly aluminium iron silicate composite flocculating agent " to Chinese patent CN1325391C, the patent No. is: the production method that discloses a kind of poly aluminium iron silicate composite flocculating agent 200610054143.6), it is by the preparation of primary products, the dipping of primary products and three step of product separation process constitute, this production method preparation condition harshness, as needs with mixture roasting 0.5～2 hour under 800～900 ℃ of temperature condition, if be used for suitability for industrialized production, its technological equipment investment expense, production operation expenses etc. are all higher, and it is too high to be used for cost for wastewater treatment.
Three. summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, a kind of method of producing highly-effective compound polysilicate aluminum ferric flocculant liquid with flyash and kaolin is provided.
The technical scheme that the present invention is taked for the technical solution problem is:
A kind of method of producing the highly-effective compound polysilicate aluminum ferric flocculant with flyash and kaolin, its concrete production stage is as follows:
A kind of method of producing the compound aluminium silicate polymer ferric flocculant with flyash and kaolin, its concrete production stage is as follows:
A. after flyash and kaolin being mixed by weight 1:0.5～2, add unslaked lime, the add-on of unslaked lime be described flyash and kaolin the two mix 1～4% of back gross weight;
B. add entry again, the add-on of water is 1～2 times of solid volume;
C. after the mixture of gained among the step b being stirred, under 50～120 ℃ of temperature condition, heated 4～8 hours, carry out slag liquid behind the naturally cooling and separate, obtain filtrate and filter residue;
D. with gained filtrate adjust pH to 6～10, get filtrate A;
E. in the gained filter residue, add concentration and be 36.7% technical hydrochloric acid, mixture B, the add-on of technical hydrochloric acid is 1～2 times of filter residue volume;
F. mixture B was heated 4～8 hours under 50～120 ℃ of temperature condition, the naturally cooling after-filtration gets liquor C;
G. with filtrate A and liquor C 1:1 mixing by volume, stir, leave standstill adjust pH to 3～5, promptly obtains prepared compound aluminium silicate polymer ferric flocculant liquid.
In the described kaolin: Al
2O
320～38%, SiO
245～60%, Fe
2O
3＜9%.
Positive beneficial effect of the present invention is:
1. highly-effective compound polysilicate aluminum iron (PAFSC) flocculation agent that the present invention produced, it is a kind of water treatment polymeric flocculant, be that (kaolin is the hydrous alumino silicates mixture that multi mineral is formed, and generally contains Al with coal-burning power plant's waste flyash and a kind of cheap kaolin
2O
320-38%, SiO
245-60%, Fe
2O
3＜9%) is main raw material, generate product through batch mixing, dipping, separation, polymerization, this product is the mixture of poly-silicic acid and metal-salt, combine the advantage of aluminium system and iron-based flocculating agent, and weaken each other weakness, not only have adsorption bridging effect and charge neutrality effect, but also have the effect that the molecule aggregation degree is big, polycomponent is collaborative mutually, its stability and purifying water effect want much superior, and the coagulating sedimentation that can be widely used in all kinds of waste water, process water and tap water is handled.And the water after handling does not contain aluminium and other objectionable constituent, has eliminated the potential hazard to human body, can effectively reduce the generation of senile dementia.
2. the present invention produces the method for highly-effective compound polysilicate aluminum ferric flocculant with flyash and kaolin, with waste material flyash as raw material, belong to the renewable resource exploitation, production cost is low, the added value of product height, for the comprehensive utilization of flyash provides new approach, has good economic benefits, environmental benefit and social benefit.
3. the present invention's method of producing the highly-effective compound polysilicate aluminum ferric flocculant with flyash and kaolin, flow process is short, and cost is low, less investment, product stability is good, and flocs unit is shaped rapidly, and sedimentation speed is fast, degerming, deodorizing, decoloration performance is good, and the market competitiveness is strong.
4. test statistics:
The applicant has compared polymerize aluminum chloride (PAC), bodied ferric sulfate (PFS), the impact of performance of highly-effective compound polysilicate aluminum iron of the present invention (PAFSC) flocculation agent in handling all kinds of waste water (comprising sanitary wastewater, the former water of tap water, paper waste, dyeing waste water etc.) respectively, the flocs unit that highly-effective compound polysilicate aluminum iron of the present invention (PAFSC) flocculation agent is handled waste water is big, settling velocity is better, use range is wideer, COD, colourity and turbidity all there are higher removal, best results; And after dyeing waste water handled, percent of decolourization can reach 93～95%.
Table 1: PAFSC of the present invention handles coal mine waste water effect
In the table: COD represents chemical oxygen demand;
SS represents suspended substance (particle).
Table 2: PAFSC Processing Paper Wastewater effect of the present invention (one-level water water quality)
| PH | SS?mg/L | COD?mg/L | Turbidity/degree |
| 8.0 | 44.3 | 24.5 | 28.0 |
| 8.2 | 57.6 | 23.2 | 26.1 |
| 8.1 | 52.3 | 34.6 | 29.4 |
| 8.1 | 54.7 | 38.9 | 27.2 |
| 8.1 | 57.8 | 36.7 | 28.6 |
| 8.2 | 33.5 | 37.8 | 25.7 |
Four. description of drawings:
Fig. 1 is technological process of production figure of the present invention.
Five. embodiment:
The present invention is described further for two example two for row below, and the present invention can form a plurality of embodiment according to different proportionings, is not limited to following two cited embodiment.
Embodiment 1: with 500 kilograms of flyash and 500 kilograms of kaolin, and 20 kilograms of unslaked lime mixings, into reactor feeds intake, adding water, to keep liquid-solid volume ratio be 1: 1, stirs and soak, after heating 6 hours under 100 ℃ of temperature condition, carry out slag liquid after the cooling and separate, filtrate is transferred about PH to 9 and is preserved; The filter wash slag, slag washing water second stage employ capable of circulation is mixed filter residue again with 36.7% technical hydrochloric acid, and keeping liquid-solid volume ratio is 1: 1, stirs at reactor and soaks, and heats 5 hours in 80 ℃ of temperature condition, carries out slag liquid after the cooling and separates, and makes filtrate.Twice filtrate is mixed, stirs, transferred about pH value to 4 at 1: 1, leave standstill, promptly get the henna highly-effective compound polysilicate aluminum iron of the present invention (PAFSC) flocculation agent liquid.
Embodiment 2: with 500 kilograms of flyash and 1000 kilograms of kaolin, and 40 kilograms of unslaked lime mixings, into reactor feeds intake, adding water, to keep liquid-solid volume ratio be 2: 1, stir and soak, 80 ℃ heated 7 hours after, carry out slag liquid after the cooling and separate, filtrate is transferred about PH to 8 and is preserved; The filter wash slag, slag washing water second stage employ capable of circulation is mixed filter residue again with 36.7% technical hydrochloric acid, and keeping liquid-solid volume ratio is 2: 1, stir to soak at reactor, heats 7 hours in 100 ℃, carries out slag liquid after the cooling and separates, and makes filtrate.Twice filtrate is mixed, stirs, transferred about pH value to 4 at 1: 1, leave standstill, promptly get the henna highly-effective compound polysilicate aluminum iron of the present invention (PAFSC) flocculation agent liquid.
Embodiment 3: with 500 kilograms of flyash and 250 kilograms of kaolin, and 30 kilograms of unslaked lime mixings, into reactor feeds intake, adding water, to keep liquid-solid volume ratio be 2: 1, stir and soak, 50 ℃ heated 8 hours after, carry out slag liquid after the cooling and separate, filtrate is transferred about PH to 9 and is preserved; The filter wash slag, slag washing water second stage employ capable of circulation is mixed filter residue again with 36.7% technical hydrochloric acid, and keeping liquid-solid volume ratio is 1.5: 1, stir to soak at reactor, heats 8 hours in 60 ℃, carries out slag liquid after the cooling and separates, and makes filtrate.Twice filtrate is mixed, stirs, transferred about pH value to 4 at 1: 1, leave standstill, promptly get the henna highly-effective compound polysilicate aluminum iron of the present invention (PAFSC) flocculation agent liquid.
Claims (2)
1. method of producing the compound aluminium silicate polymer ferric flocculant with flyash and kaolin, its concrete production stage is as follows:
A. after flyash and kaolin being mixed by weight 1:0.5～2, add unslaked lime, the add-on of unslaked lime be described flyash and kaolin the two mix 1～4% of back gross weight;
B. add entry again, the add-on of water is 1～2 times of solid volume;
C. after the mixture of gained among the step b being stirred, under 50～120 ℃ of temperature condition, heated 4～8 hours, carry out slag liquid behind the naturally cooling and separate, obtain filtrate and filter residue;
D. with gained filtrate adjust pH to 6～10, get filtrate A;
E. in the gained filter residue, add concentration and be 36.7% technical hydrochloric acid, mixture B, the add-on of technical hydrochloric acid is 1～2 times of filter residue volume;
F. mixture B was heated 4～8 hours under 50～120 ℃ of temperature condition, the naturally cooling after-filtration gets liquor C;
G. with filtrate A and liquor C 1:1 mixing by volume, stir, leave standstill adjust pH to 3～5, promptly obtains prepared compound aluminium silicate polymer ferric flocculant liquid.
2. method of producing the compound aluminium silicate polymer ferric flocculant with flyash and kaolin according to claim 1 is characterized in that: in the described kaolin: Al
2O
320～38%, SiO
245～60%, Fe
2O
3＜9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101899202A CN100542976C (en) | 2007-11-06 | 2007-11-06 | Method with flyash and kaolin production compound aluminium silicate polymer ferric flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101899202A CN100542976C (en) | 2007-11-06 | 2007-11-06 | Method with flyash and kaolin production compound aluminium silicate polymer ferric flocculant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182061A CN101182061A (en) | 2008-05-21 |
| CN100542976C true CN100542976C (en) | 2009-09-23 |
Family
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| CN101830476B (en) * | 2009-03-13 | 2011-12-21 | 抚顺矿业集团有限责任公司 | Method for preparing polymeric ferric aluminum silicate flocculant from waste oil shale slag |
| CN102500311A (en) * | 2011-10-08 | 2012-06-20 | 昆明理工大学 | Method for producing adsorbent by modified coal ash |
| CN103232079B (en) * | 2012-06-01 | 2015-02-11 | 邱兵 | Formula and preparation method of natural mineral dyeing and printing industry wastewater treatment agent |
| CN103265102B (en) * | 2013-06-07 | 2014-07-02 | 嘉善海峡净水灵化工有限公司 | Process for recycling filter residues of multi-core aluminium-polyaluminium silicate phosphide chloride |
| CN103613227A (en) * | 2013-12-09 | 2014-03-05 | 天津工业大学 | Treatment method of feedwater raw water |
| CN104512951B (en) * | 2014-12-22 | 2016-05-04 | 江苏永葆环保科技股份有限公司 | A kind of method of utilizing PAC residue coproduction polymeric aluminum sulfate silicate iron and wastewater treatment pulvis |
| CN106335981B (en) * | 2015-07-07 | 2019-08-13 | 云南民族大学 | A kind of method of nickel slag and red mud comprehensive utilization |
| CN105152291B (en) * | 2015-08-12 | 2017-09-22 | 成都理工大学 | Poly aluminium iron silicate acrylamide copolymer composite flocculation agent and preparation method thereof |
| CN105152294A (en) * | 2015-09-09 | 2015-12-16 | 天津工业大学 | Preparation method and application of flocculant for treating urban sewage |
| CN107934978B (en) * | 2017-10-23 | 2020-12-15 | 昆明理工大学 | A method for preparing inorganic polymeric flocculant from fly ash |
| CN108609711A (en) * | 2018-05-18 | 2018-10-02 | 辽宁大学 | A method of by coal ash for manufacturing for poly aluminium iron silicate compound coagulant |
| CN113828014B (en) * | 2021-09-14 | 2023-03-17 | 海南金海浆纸业有限公司 | Purification and decoloration process of polyaluminium chloride solution |
| CN118993470B (en) * | 2024-10-25 | 2025-02-07 | 中铁环境科技工程有限公司 | A method for treating tunnel construction wastewater using modified kaolin |
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| 粉煤灰制备聚硅酸铝铁及条件选择. 朱开金等.化工环保，第24卷第增刊期. 2004 |
| 粉煤灰制备聚硅酸铝铁及条件选择. 朱开金等.化工环保，第24卷第增刊期. 2004 * |
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