CN101264955A - Process for preparing bentonite dephosphorization water purification agent - Google Patents
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- CN101264955A CN101264955A CNA2008101048407A CN200810104840A CN101264955A CN 101264955 A CN101264955 A CN 101264955A CN A2008101048407 A CNA2008101048407 A CN A2008101048407A CN 200810104840 A CN200810104840 A CN 200810104840A CN 101264955 A CN101264955 A CN 101264955A
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- bentonite
- purification agent
- water purification
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- dephosphorization
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 21
- 239000000440 bentonite Substances 0.000 title claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 title claims description 28
- 238000000746 purification Methods 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title 1
- 229940092782 bentonite Drugs 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000012065 filter cake Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 150000002603 lanthanum Chemical class 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000280 sodium bentonite Inorganic materials 0.000 claims abstract description 5
- 229940080314 sodium bentonite Drugs 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract 2
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 229920000592 inorganic polymer Polymers 0.000 claims description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 206010013786 Dry skin Diseases 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 2
- 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 claims description 2
- 235000011128 aluminium sulphate Nutrition 0.000 claims description 2
- 238000005341 cation exchange Methods 0.000 claims description 2
- 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 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 235000015598 salt intake Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 238000010298 pulverizing process Methods 0.000 abstract description 5
- 238000005189 flocculation Methods 0.000 abstract description 2
- 230000016615 flocculation Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000012629 purifying agent Substances 0.000 abstract 4
- 229910000281 calcium bentonite Inorganic materials 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 15
- 229910019142 PO4 Inorganic materials 0.000 description 13
- 239000010452 phosphate Substances 0.000 description 13
- 239000000725 suspension Substances 0.000 description 12
- 238000005303 weighing Methods 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 6
- 238000012851 eutrophication Methods 0.000 description 5
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 238000002242 deionisation method Methods 0.000 description 3
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 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 3
- 238000002156 mixing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 alum Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A preparation method of bentonite phosphorus removal water purifying agent comprises the steps of drying calcium bentonite or sodium bentonite, pulverizing, sieving with 200 mesh sieve, adding a lanthanum salt solution, stirring in a water bath with room temperature to 60 DEG C for 2-12 hours, washing, and preparing into 5-10 wt% slurry; adding inorganic polymeric flocculant into the above slurry, and stirring; filtering; and drying the filter cake at 70-90 DEG C, and pulverizing to 40-200 mesh powder as bentonite phosphorus removal water purifying agent. The inventive method modifies bentonite with inorganic polymeric flocculant and lanthanum salt, so as to enhance the precipitation, coagulation and flocculation action of the bentonite phosphorus removal water purifying agent through the synergism among the inorganic polymeric flocculant, lanthanum salt and bentonite. The inventive method is simple; and the obtained bentonite phosphorus removal water purifying agent has high efficiency and good safety, and has important application value in environmental protection and controlling of water bodies such as river, lake and water reservoir.
Description
Technical field
A kind of preparation method of bentonite dephosphorization water purification agent is a kind of preparation method who is used for removing the phosphatic composite bentonite water purification agent of eutrophication water body, belongs to the environment protection processing technology field,
Background technology
Along with the aggravation that source quality pollutes, China's body eutrophication phenomenon is also serious gradually, the balance of water ecosystem and stable destruction, and environment for human survival also is subjected to grave danger.The major cause that causes eutrophication is that nitrogen, phosphoric exceed standard, and wherein phosphoric exceeds standard the water body oxygen enrichmentization is had special contribution.Chemical method as economical, water body dephosphorized technology is fit to the national conditions of China's present stage sewage disposal very much efficiently.Present widely used chemical agent comprises: ferro-aluminum flocculation agent, alum, calcium oxide etc.The weak point of this medicament is that the dephosphorization amount is on the low side, only can partly remove the nutritive salt such as resolvability phosphoric acid salt in the water body, can not reach the requirement of advanced treatment; The dissolved phosphorus that can not suppress in the bed mud discharges, and does not reach the effect for the treatment of both principal and secondary aspect of disease.
Wilkinite is as a kind of abundance of originating, Nantural non-toxic, easy to use and expensive few environment-friendly material, the eutrophication that is widely used in water body with its good ion exchangeable and adsorptivity is administered, and the composite bentonite dephosphorization material of synthesized high-performance more and more comes into one's own.
Summary of the invention
The purpose of this invention is to provide phosphatic wilkinite water purification agent and preparation method thereof in a kind of removal eutrophication water body, promptly utilize good ion exchangeable of wilkinite and adsorptivity, adopt inorganic polymer flocculant and lanthanum salt pair wilkinite to carry out modification, by working in coordination with mutually between inorganic polymer flocculant, lanthanum salt and the wilkinite, strengthen precipitin reaction, cohesion, throwing out, reach the purpose of synergy dephosphorization; The stable performance of calcium phosphate precipitation composition granule slowly is deposited to water bottom,, has been avoided the release once more of sedimentary phosphate, thereby has reached the purpose for the treatment of both principal and secondary aspect of disease firmly in bed mud by the wilkinite natural clay.
A kind of preparation method of bentonite dephosphorization water purification agent, this preparation method may further comprise the steps:
(1) calcium-base bentonite or sodium bentonite dry, that pulverize, cross 200 mesh sieves are added in the lanthanum salts solution, lanthanum salt consumption is 1.0～2.5 times of wilkinite cation exchange capacity, room temperature～60 ℃ stirred in water bath 2～12 hours, use deionized water wash then, be mixed with the slurries of 5～10wt%;
(2) inorganic polymer flocculant is added in the above-mentioned slurries, the inorganic polymer flocculant amount that adds in the rear slurry is 10-20wt%, room temperature～60 ℃ stirring 2～6 hours;
Described inorganic polymer flocculant is any or multiple in polymerize aluminum chloride, poly-ferric chloride, bodied ferric sulfate, aluminium iron polychloride, polyaluminium sulfate, poly aluminium sulfate silicate, the polymeric aluminium ferrum silicate;
(3) slurries that step (2) has been reacted are through centrifuging, with 70～90 ℃ of dryings of filter cake 24 hours, are crushed to 40～200 orders, promptly obtain described bentonite dephosphorization water purification agent.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1
A kind of preparation method of bentonite dephosphorization water purification agent, this preparation method may further comprise the steps:
(1) weighing seven hydration Lanthanum trichloride 3g are dissolved in the 400ml deionized water, and 60 ℃ are stirred down; Take by weighing the sodium bentonite 20g of drying, pulverizing, mistake 200 mesh sieves, slowly evenly be added in the lanthanum chloride solution, stir after 2 hours, use deionized water wash 4 times, filter dehydration drops into the filter cake that obtains in the 200ml deionization then, stirs into suspension liquid;
(2) take by weighing the 2g aluminium iron polychloride, be added in the above-mentioned suspension liquid, stirred 4 hours under the room temperature, dehydration is then filtered and is obtained filter cake;
(3) with filter cake 70 ℃ dry 24 hours down, pulverize, cross 200 mesh sieves, obtain dephosphorization water purification agent of the present invention.
Utilize described dephosphorization water purification agent dephosphorization water purifying method, step is as follows:
(1) this dephosphorization water purification agent is mixed with the suspension liquid of 10wt%;
(2) add 0.25g kaolin in the 1L water, after stirring fast, mixing, stirred at a slow speed again 15 minutes, staticly settled then 15 minutes, get the upper strata stillness of night for testing water sample, simultaneously add dipotassium hydrogen phosphate in this water sample, make muddy phosphate radical solution, wherein phosphate concentration is 5mg/L (in P));
(3) with the suspension liquid that is made in (1), join in (2) according to the ratio of adding of 2wt% (P quality/dephosphorization water purification agent quality), can see that moments later a large amount of closely knit flcos occur, clarify gradually on the solution upper strata;
After (4) 48 hours, measure the phosphate concentration in the clear liquid, the result shows that dephosphorization water purification agent reaches 86% to the clearance of phosphate radical.
Embodiment 2
A kind of preparation method of bentonite dephosphorization water purification agent, this preparation method may further comprise the steps:
(1) weighing seven hydration Lanthanum trichloride 5g are dissolved in the 300ml deionized water, and 40 ℃ are stirred down; Take by weighing the calcium-base bentonite 20g of drying, pulverizing, mistake 200 mesh sieves, slowly evenly be added in the lanthanum chloride solution, stir after 6 hours, use deionized water wash 2 times, filter dehydration drops into the filter cake that obtains in the 100ml deionization then, stirs into suspension liquid;
(2) take by weighing the 3g polymerize aluminum chloride, be added in the above-mentioned suspension liquid, 40 ℃ were stirred 2 hours down, and dehydration is then filtered and obtained filter cake;
(3) with filter cake 80 ℃ dry 24 hours down, pulverize, cross 200 mesh sieves, promptly obtain described dephosphorization water purification agent.
Utilize described dephosphorization water purification agent dephosphorization water purifying method, step is as follows:
(1) this dephosphorization water purification agent is mixed with the suspension liquid of 10wt%.
(2) add 0.25g kaolin in the 1L water, after stirring fast, mixing, stirred at a slow speed again 15 minutes, staticly settled then 15 minutes, get the upper strata stillness of night for testing water sample, simultaneously add dipotassium hydrogen phosphate in this water sample, make muddy phosphate radical solution, wherein phosphate concentration is 5mg/L (in P)).
(3) with the suspension liquid that is made in (1), join in (2) according to the ratio of adding of 2wt% (P quality/dephosphorization water purification agent quality), can see that moments later a large amount of closely knit flcos occur, clarify gradually on the solution upper strata.
After (4) 48 hours, measure the phosphate concentration in the clear liquid, the result shows that dephosphorization water purification agent reaches 93% to the clearance of phosphate radical.
Embodiment 3
A kind of preparation method of bentonite dephosphorization water purification agent, this preparation method may further comprise the steps:
(1) weighing seven hydration Lanthanum trichloride 7g are dissolved in the 200ml deionized water, stir under the room temperature; Take by weighing the sodium bentonite 20g of drying, pulverizing, mistake 200 mesh sieves, slowly evenly be added in the lanthanum chloride solution, stir after 12 hours, use deionized water wash 3 times, filter dehydration drops into the filter cake that obtains in the 150ml deionization then, stirs into suspension liquid;
(2) take by weighing the 4g poly-ferric chloride, be added in the above-mentioned suspension liquid, 60 ℃ were stirred 6 hours down, and dehydration is then filtered and obtained filter cake;
(3) with filter cake 90 ℃ dry 24 hours down, pulverize, cross 200 mesh sieves, promptly obtain described dephosphorization water purification agent.
Utilize described dephosphorization water purification agent dephosphorization water purifying method, step is as follows:
(1) this dephosphorization water purification agent is mixed with the suspension liquid of 10wt%.
(2) add 0.25g kaolin in the 1L water, after stirring fast, mixing, stirred at a slow speed again 15 minutes, staticly settled then 15 minutes, get the upper strata stillness of night for testing water sample, simultaneously add dipotassium hydrogen phosphate in this water sample, make muddy phosphate radical solution, wherein phosphate concentration is 5mg/L (in P)).
(3) with the suspension liquid that is made in (1), join in (2) according to the ratio of adding of 2wt% (P quality/dephosphorization water purification agent quality), can see that moments later a large amount of closely knit flcos occur, clarify gradually on the solution upper strata.
After (4) 48 hours, measure the phosphate concentration in the clear liquid, the result shows that dephosphorization water purification agent reaches 98% to the clearance of phosphate radical.
Claims (1)
1, a kind of preparation method of bentonite dephosphorization water purification agent is characterized in that, this preparation method may further comprise the steps
(1) calcium-base bentonite or sodium bentonite dry, that pulverize, cross 200 mesh sieves are added in the lanthanum salts solution, lanthanum salt consumption is 1.0～2.5 times of wilkinite cation exchange capacity, room temperature～60 ℃ stirred in water bath 2～12 hours, use deionized water wash then, be mixed with the slurries of 5～10wt%;
(2) inorganic polymer flocculant is added in the described slurries of step (1), the inorganic polymer flocculant amount that adds in the rear slurry is 10-20wt%, room temperature～60 ℃ stirring 2～6 hours;
Described inorganic polymer flocculant is any or multiple in polymerize aluminum chloride, poly-ferric chloride, bodied ferric sulfate, aluminium iron polychloride, polyaluminium sulfate, poly aluminium sulfate silicate, the polymeric aluminium ferrum silicate;
(3) slurries that step (2) has been reacted after filtration, with 70～90 ℃ of dryings of filter cake 24 hours, be crushed to 40～200 orders after, promptly obtain described bentonite dephosphorization water purification agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101048407A CN101264955A (en) | 2008-04-25 | 2008-04-25 | Process for preparing bentonite dephosphorization water purification agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101048407A CN101264955A (en) | 2008-04-25 | 2008-04-25 | Process for preparing bentonite dephosphorization water purification agent |
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| CN101264955A true CN101264955A (en) | 2008-09-17 |
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| CNA2008101048407A Pending CN101264955A (en) | 2008-04-25 | 2008-04-25 | Process for preparing bentonite dephosphorization water purification agent |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979343A (en) * | 2010-10-08 | 2011-02-23 | 天津市市政工程设计研究院 | Process for treating landscape water eutrophication |
| CN102557221A (en) * | 2012-02-15 | 2012-07-11 | 中国科学院地球化学研究所 | Preparation method and application of eutrophic water body sediment phosphor in-situ passivating agent |
| CN102824893A (en) * | 2012-09-05 | 2012-12-19 | 中国科学院地球化学研究所 | Methods for preparing and applying modified clay mineral passivator |
| CN103347818A (en) * | 2011-02-10 | 2013-10-09 | 运水高有限公司 | Biocidal composition for treating water |
| CN103880140A (en) * | 2012-12-21 | 2014-06-25 | 福斯洛克股份有限公司 | Slurry For Treatment Of Oxyanion Contamination In Water |
| CN103951023A (en) * | 2014-04-18 | 2014-07-30 | 包头轻工职业技术学院 | Compound sewage treatment agent |
| CN104671380A (en) * | 2015-02-13 | 2015-06-03 | 蒋宏宝 | Composite type flocculating agent and preparation method thereof |
| CN105776426A (en) * | 2014-12-19 | 2016-07-20 | 天津市杰刚冶金材料有限公司 | Method for preparing composite flocculant |
| CN105906023A (en) * | 2016-07-12 | 2016-08-31 | 河南永泽环境科技有限公司 | Efficient phosphorus removal compound coagulant |
| CN106082411A (en) * | 2016-07-12 | 2016-11-09 | 河南永泽环境科技有限公司 | A kind of preparation method of efficient dephosphorization compounding coagulation agent |
| CN106186247A (en) * | 2015-04-29 | 2016-12-07 | 郑伟 | A kind of water body control phosphorus preparation and application thereof |
| CN106698548A (en) * | 2017-01-14 | 2017-05-24 | 冯志祥 | High-efficient phosphate removing agent and preparation method thereof |
| CN106745600A (en) * | 2016-12-17 | 2017-05-31 | 安徽师范大学 | A kind of bentonite/poly aluminium iron silicate composite flocculating agent, preparation method and applications |
| CN106830160A (en) * | 2017-01-14 | 2017-06-13 | 冯志祥 | A kind of dephosphorization denitrogenation synthesis agent and preparation method thereof |
| CN107010690A (en) * | 2017-05-11 | 2017-08-04 | 徐明慧 | A kind of city domestic sewage dephosphorization agent and preparation method thereof |
| CN108341459A (en) * | 2018-04-20 | 2018-07-31 | 台州学院 | The method of phosphorus in the alkali lignin Adsorption water body that a kind of nano lanthanum oxide is modified |
| CN108380175A (en) * | 2018-02-28 | 2018-08-10 | 中国科学院广州地球化学研究所 | A kind of carbonic acid gas lanthanum-halloysite composite material and its preparation method and application |
| CN108554372A (en) * | 2018-05-04 | 2018-09-21 | 南京信息工程大学 | The method that phosphorus in water removal is gone using aluminum salt modified clay |
| CN109354083A (en) * | 2018-11-21 | 2019-02-19 | 浙江怀握科技有限公司 | A kind of preparation method of dephosphorization except the water purification agent of ammonia nitrogen |
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| CN110548490A (en) * | 2018-05-31 | 2019-12-10 | 华中科技大学 | Preparation method and application of recyclable lanthanum modified bentonite phosphorus removal material |
| CN110683596A (en) * | 2019-10-09 | 2020-01-14 | 中国科学院南京地理与湖泊研究所 | Production method for realizing phosphorus fixation capacity amplification of clay mineral |
| CN113582319A (en) * | 2021-08-11 | 2021-11-02 | 中新瑞美(天津)环保科技有限公司 | Composite waterproof sodium bentonite blanket for treating water body polluted by phosphorus and arsenic |
| CN113716635A (en) * | 2021-10-15 | 2021-11-30 | 辽宁同筑环保设施运营有限公司 | Phosphorus removing agent for industrial sewage treatment and use method thereof |
| CN113813916A (en) * | 2021-09-17 | 2021-12-21 | 交通运输部天津水运工程科学研究所 | Salt-tolerant deep phosphorus removal agent and preparation method thereof |
-
2008
- 2008-04-25 CN CNA2008101048407A patent/CN101264955A/en active Pending
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979343A (en) * | 2010-10-08 | 2011-02-23 | 天津市市政工程设计研究院 | Process for treating landscape water eutrophication |
| CN103347818A (en) * | 2011-02-10 | 2013-10-09 | 运水高有限公司 | Biocidal composition for treating water |
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