CN106315810A - Multiplex load type silicon-based phosphorus removal agent, and preparation method and application thereof - Google Patents
Multiplex load type silicon-based phosphorus removal agent, and preparation method and application thereof Download PDFInfo
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- CN106315810A CN106315810A CN201610849381.XA CN201610849381A CN106315810A CN 106315810 A CN106315810 A CN 106315810A CN 201610849381 A CN201610849381 A CN 201610849381A CN 106315810 A CN106315810 A CN 106315810A
- Authority
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- China
- Prior art keywords
- load type
- silica
- attapulgite clay
- parts
- consumption
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 66
- 239000011574 phosphorus Substances 0.000 title claims abstract description 53
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 title abstract description 4
- 239000010703 silicon Substances 0.000 title abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 52
- 229960000892 attapulgite Drugs 0.000 claims abstract description 48
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 48
- 239000004927 clay Substances 0.000 claims abstract description 47
- 239000010865 sewage Substances 0.000 claims abstract description 34
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 27
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 27
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 27
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 26
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 101
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 88
- 239000000377 silicon dioxide Substances 0.000 claims description 44
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 28
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000004913 activation Effects 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 3
- ZGBSOTLWHZQNLH-UHFFFAOYSA-N [Mg].S(O)(O)(=O)=O Chemical compound [Mg].S(O)(O)(=O)=O ZGBSOTLWHZQNLH-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 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 abstract description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 3
- 238000011068 loading method Methods 0.000 abstract description 3
- HIVGXUNKSAJJDN-UHFFFAOYSA-N [Si].[P] Chemical compound [Si].[P] HIVGXUNKSAJJDN-UHFFFAOYSA-N 0.000 abstract 1
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 20
- 230000001376 precipitating effect Effects 0.000 description 20
- 239000006228 supernatant Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 20
- 239000007788 liquid Substances 0.000 description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 229910019142 PO4 Inorganic materials 0.000 description 8
- 150000001336 alkenes Chemical class 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 8
- 239000010452 phosphate Substances 0.000 description 8
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 8
- 238000012851 eutrophication Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 241000195493 Cryptophyta Species 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 159000000013 aluminium salts Chemical class 0.000 description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011953 bioanalysis Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000192700 Cyanobacteria Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000005422 algal bloom Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 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 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 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
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000009519 fu-yuan Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000000416 hydrocolloid Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052816 inorganic phosphate Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 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
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a multiplex load type silicon-based phosphorus removal agent, and a preparation method and application thereof. The phosphorus removal agent is prepared through the operation steps of activating attapulgite clay dissolved in water under the alkaline condition, loading ferric sulfate under the acid condition, adding polyvinylpyrrolidone, loading magnesium sulfate and the like. Primary experiments show that the phosphorus removal agent provided by the invention is applied according to the proportion of ten thousandth of the mass of the sewage for the sewage with the total phosphorus content being less than 10mg/L; the phosphorus removal efficiency can be higher than 95 percent; good application effects are achieved. Compared with a conventional phosphorus removal agent, the multiplex load type silicon-based phosphorus removal agent has the main technical advantages that each ingredient in the multiplex load type silicon phosphorus removal agent achieves the environment-friendly effect; non-toxicity and harmlessness are achieved; the preparation process is simple and convenient; in addition, the consumption is small; the addition is convenient; the storage is stable; the phosphorus removal is thorough; the effect taking speed is high; the technical defects of great addition, high color outlet chromaticity, high PH value requirements and the like of the existing phosphorus removal agent can be well overcome, so that better popularization and application values are realized.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of silica-based dephosphorization agent of multi-load type, preparation method
And application.
Background technology
Body eutrophication refers to that the nutrient substance such as the phosphorus needed for aquatile, nitrogen are by natural cause or mankind's activity
Impact, enters in a large number in the water bodys such as river, lake, Haikou, causes plankton (such as: various algae etc.) Fast-propagation, water body
Middle dissolved oxygen declines in a large number, water quality deterioration, and then makes a large amount of life entities in water body dead, and aquatic ecosystem and water function are subject to
Suppression and the phenomenon destroyed.The harm of body eutrophication mainly shows as the following aspects:
(1) cause algae raised growth due to the increase of nutrient substance, quickly consume the dissolved oxygen of swallow, and then cause
Oxygen consumption type biology cannot be survived；
(2) many algae can secrete or metabolism goes out poisonous and harmful substance (such as: cyanophyceae can secrete Algae toxins, has carcinogenecity),
Not only endanger other animals and plants, and the resident near drinking water source area is caused serious health threat；
(3) due to the minimizing of Dissolved Oxygen in Water, a large amount of algae is ultimately resulted in dead；Algae after death rots to make water quality deterioration
Becoming muddy, water transparency declines, and ultimately results in the deterioration of water environment, consequently, it is possible to affect sending out of sightseeing tour cause
Exhibition；
(4) when water eutrophication progressively deteriorates, there is catastrophic fluctuation in the whole bioecosystem of water body, and biological is various
Property and stability reduce, destroy the ecological balance in lake, accelerate the process of lake decline.
In recent years, there is the trend being on the rise in China's body eutrophication.Harmful algal is frequently broken out in coastal marine site, makes
Culture fishery suffers heavy losses, and the most seriously destroys the marine eco-environment of coastal region.Additionally, numerous lakes and water
The fresh water such as storehouse and drinking water sources also take place frequently algal bloom event, cause a series of serious water environmental problems to occur.
In body eutrophication factor, a kind of more typical and main influence factor during the enrichment of phosphorus.Farmland
Apply excessive phosphate fertilizer, in city domestic sewage institute rich in phosphorus, some industrial wastewater also contain enrich phosphorus, they are all
The major incentive of body eutrophication.For prevention body eutrophication, " urban wastewater treatment firm pollutant emission standard "
One-level A water outlet phosphorus standard is carried mark by phosphate meter by (GB18918 2002) rise to be counted by total phosphorus (0.50 mg/L).Cause
This, the situation of research and development technology of phosphorus removal from wastewater is the most urgent.
The main method of dephosphorization at present has bioanalysis, absorption method and chemical precipitation method.Bioanalysis dephosphorization operating cost is low, but
Phosphor-removing effect is not sufficiently stable, and is vulnerable to the impact of the extraneous factor such as temperature, dissolved oxygen, and ultimately resulting in water outlet total phosphorus can not be up to standard；
Absorption method is limited by loss in efficiency and the regeneration techniques restriction of adsorbing material, have impact on its application in more areas；Change
It is high, simple to operate that the sedimentation method have dephosphorization efficiency, the feature that the suitability is wide, thus is application main in existing sewage dephosphorization
Method.
Chemical dephosphorization forms calcium phosphate precipitation by chemistry precipitation process and completes, and is nature phosphate precipitating
Artificial strengthening.The phosphorus of nature derives from phosphate rock, deposit, guanite and zoolite, through natural erosion or people
Work is exploited, and enters water body or soil in the form of phosphate, thus constitutes phosphate precipitating.And chemical dephosphorization is in sewage
Artificially add after dephosphorization reagent (slaine medicament) phosphorus deliquescent with sewage (phosphate) mixes, form graininess, non-molten
Solve property indissoluble precipitate and from water separate out process.Conventional dephosphorization reagent has iron salt (iron sulfate, iron chloride, polymerised sulphur
Acid ferrum etc.), aluminium salt (aluminum sulfate, aluminium polychlorid etc.) and Calx etc., but during conventional dephosphorization with ferric salt agent use, water outlet easily occurs
Water turbidity yellowing phenomenon, especially prominent in low-cloudy water body and hydraulic detention time are compared with short processes；Aluminium salt dephosphorization agent dephosphorization is imitated
Rate is the highest, and dosage is relatively big, and is easily introduced in water body by aluminium ion；And use Calx dephosphorization not only to add inconvenience, and neutral or
In Acidic water, dephosphorization efficiency is low, adds the impact of water quality pH value bigger in a large number.In prior art, some researchs are also had to use multiple
The method joined, uses after iron salt, aluminium salt, calcium salt etc. and inorganic carrier such as attapulgite, bentonite etc. directly being mixed, but due to
Technique is excessively simple, and each component can not be the most collaborative, the most fundamentally solves the various drawbacks of conventional dephosphorization agent, based on this
A little defects, design new water process dephosphorization agent and have highly important application value.
Summary of the invention
It is an object of the present invention to provide a kind of silica-based dephosphorization agent of multi-load type, overcome in existing chemical dephosphorization agent with its part
Dosage is big, effluent color dilution is high, pH value requires high defect, thus improves the phosphor-removing effect of sewage disposal.
Details are as follows for the technical scheme that the application is taked.
A kind of silica-based dephosphorization agent of multi-load type, is prepared from by following steps:
(1) attapulgite clay soluble in water is activated in the basic conditions；Specifically, attapulgite clay is dissolved in
After in water, with 10%NaOH solution regulate pH=8 ~ 12, continuously stirred under the conditions of activate 1 ~ 3h；
When dissolving attapulgite clay, in terms of mass fraction, attapulgite clay consumption is 10 ~ 30 parts, and the consumption of water is generally
35 ~ 45 parts；
(2) by acid for attapulgite clay aqueous solution furnishing after activation in step (1), iron sulfate is made to be carried on attapulgite clay
On；Specifically, in regulating step (1) after activation after attapulgite clay aqueous solution pH to 2 ~ 4, add iron sulfate powder,
Continuously stirred no less than 1h；
(3), under heating condition, the solution system of step (2) adds polyvinylpyrrolidone, and forms stable dispersion
System；Specifically, the reaction system of step (2) is heated to 50 ~ 80 DEG C, add polyvinylpyrrolidone under constant temperature, then
Strong agitation is no less than 30 minutes, and making solution is uniform and stable dispersion；
The K value of polyvinylpyrrolidone is optional to K10 ~ K90；
(4) in the solution system of step (3), add magnesium sulfate powder, after being uniformly dispersed, be dried powder process, specifically, protect
Hold solution system temperature (50 ~ 80 DEG C) in step (3), add magnesium sulfate powder under constant temperature, continuously stirred be not less than 1 hour
After, it is the silica-based dephosphorization agent of multi-load type provided herein after being dried powder process；
Can use when being dried powder process to be first dried and (for example with cylinder dry, frozen drying etc., but do when using cylinder dry
Dry temperature no more than 100 DEG C, preferably 60 ~ 80 DEG C) powder process mode again, it is possible to use be spray-dried powder process integration mode enter
OK, when using spray drying powder process, exsiccator leaving air temp should control below 100 DEG C；
In preparation process, in terms of mass fraction, material amounts ratio is, attapulgite clay consumption is 10 ~ 30 parts, iron sulfate
Consumption is 10 ~ 40 parts, and the consumption of polyvinylpyrrolidone is 1 ~ 10 part, and magnesium sulfate consumption is 5 ~ 15 parts.
The preparation method of the described silica-based dephosphorization agent of multi-load type, specifically includes following steps:
(1) attapulgite clay soluble in water is activated in the basic conditions；Specifically, attapulgite clay is dissolved in
After in water, with 10%NaOH solution regulate pH=8 ~ 12, continuously stirred under the conditions of activate 1 ~ 3h；
(2) by acid for attapulgite clay aqueous solution furnishing after activation in step (1), iron sulfate is made to be carried on attapulgite clay
On；Specifically, in regulating step (1) after activation after attapulgite clay aqueous solution pH to 2 ~ 4, add iron sulfate powder,
Continuously stirred no less than 1h；
(3), under heating condition, the solution system of step (2) adds polyvinylpyrrolidone, and forms stable dispersion
System；Specifically, the reaction system of step (2) is heated to 50 ~ 80 DEG C, add polyvinylpyrrolidone under constant temperature, then
Strong agitation is no less than 30 minutes, and making solution is uniform and stable dispersion；
(4) in the solution system of step (3), add magnesium sulfate powder, after being uniformly dispersed, be dried powder process, specifically, protect
Hold solution system temperature (50 ~ 80 DEG C) in step (3), add magnesium sulfate powder under constant temperature, continuously stirred be not less than 1 hour
After, it is dried powder process, is the silica-based dephosphorization agent of multi-load type provided herein.
The application in sewage disposal of the described silica-based dephosphorization agent of multi-load type, to the total phosphorus content dirt less than 10mg/L
Water, by the mass ratio of water body 1.5/1.0/10000ths ~ ten thousand, is used for removing phosphor in sewage element.
The silica-based dephosphorization agent of multi-load type provided by the present invention, when applying as dephosphorization agent, its main technical principle is:
Iron sulfate can be with the inorganic phosphate salt formation insoluble phosphate in water body, and magnesium sulfate has good adsorption bleaching energy
Power, it is possible to the organophosphor pollutant in solidification water body, thereby through the use in conjunction of iron sulfate Yu magnesium sulfate, thus preferably precipitates
P elements in sewage the cleaning of holding water body of trying one's best.
When specifically preparing the silica-based dephosphorization agent of multi-load type provided herein, how golden attapulgite clay is as one
Belonging to silicate mine soil, it, after alkali activates, can form stable dispersion system, and after activation, on the one hand attapulgite clay is greatly increased
Its porosity and specific surface area, excellent carrier when can load as subsequent metal salt；On the other hand attapulgite clay is lived
Meeting dissolution sodium silicate during change, and under the acid condition when loading iron sulfate, auto polymerization is formed by the sodium silicate of institute's dissolution
The inorganic macromole of polysilicon acid, owing to polysilicon acid has good coagulation effect, thus when being used for precipitating phosphor in sewage element, poly-
Silicic acid can make discrete slaine hydrocolloid and phosphate colloid be flocculated in time and form precipitation, avoids further water
Muddy yellowing phenomenon, thus do not affect effluent quality.And the interpolation of preparation process polyvinylpyrrolidone, it primarily serves relaying
Load effect, so that iron sulfate and magnesium sulfate slaine is the most dual is carried on attapulgite clay microgranule, and then
Phosphate in water body and organophosphor are discharged water body with precipitation form.
Preliminary experiment shows, is the simulated water sample of 10mg/L to total phosphorus content, when dephosphorization agent provided herein adds
Amount is water sample mass ratio ten thousand/for the moment, and total phosphorus in water can be down to below 0.5mg/L, and dephosphorization efficiency is more than 95%, shows
Preferably apply effect.Compared with existing conventional dephosphorization agent, the major technique advantage of the present invention has: the silica-based dephosphorization of multi-load type
In agent, the more environmental protection of each component, nontoxic, and preparation technology is easy, and usage amount is less, adds conveniently, and stable storing, removes
Phosphorus is thorough, and onset is rapid, can preferably overcome that existing dephosphorization agent agent dosage is big, effluent color dilution is high, the high technology of pH value requirement lacks
Fall into, thus there is preferable application value.
Detailed description of the invention
Below in conjunction with embodiment, the application is further explained explanation, before introducing specific embodiment, to following enforcement
In example, partial material situation is briefly described as follows:
Simulation Wastewater Sample:
The simulation Wastewater Sample of total phosphorus content 10mg/L it is configured to reference to phosphorus standard solution collocation method in GB GB11893-89；
In following embodiment the silica-based dephosphorization agent of multi-load type prepare raw material:
Attapulgite clay, technical grade, purchased from Lingshou County Ju Tai mineral products processing factory；
Polyvinylpyrrolidone (K10 ~ K90), technical grade, purchased from Jiaozhuo Zhong Weite product pharmaceutcal corporation, Ltd；
Iron sulfate powder, magnesium sulfate powder, be technical grade, is purchased from the prosperous prosperous Chemical Co., Ltd. in Tianjin；
Bodied ferric sulfate, aluminium polychlorid, be technical grade, is purchased from Fuyuan water-purifying material company limited of Gongyi City；
Phosphorus content detection method:
Carrying out according to the assay method of water quality total phosphorus in GB GB11893-89, instrument uses upper Nereid section 721(N) vis spectroscopy
Photometer.
Comparative example
Show the technology effect of the silica-based dephosphorization agent of multi-load type provided by the present invention phosphorous aspect in reducing sewage preferably
Really, invention carries out dephosphorization test to water sample, in this, as comparative example according to existing conventional phosphorus removing method.Related experiment process is brief
It is described as follows.
Configuration 1L total phosphorus content is the simulation Wastewater Sample of 10mg/L；
Bodied ferric sulfate is configured to the solution of mass fraction 30%, according to ferric polysulfate solid quality be water sample ten thousand/
Ratio, is added dropwise to polymeric ferrous sulphate solution in water sample, after quickly stirring 1 minute, and low rate mixing 10 minutes, stand 30 minutes,
Take 2 centimeters supernatant (supernatant is the most light yellow) under liquid level, according to the mensuration side of water quality total phosphorus in GB GB11893-89
Method carries out total phosphorus detection, and testing result shows, after dephosphorization, in water sample, total phosphorus content is 1.83mg/L, and therefore dephosphorization efficiency is
89.7%。
With reference to said method, equally aluminium polychlorid is configured to 30% mass fraction aqueous solution (polyaluminium chloride solid masses
Ratio is similarly water sample ten thousand/) carry out dephosphorization experiment.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, remove
After phosphorus, in water sample, total phosphorus content is 2.04mg/L, and therefore dephosphorization efficiency is 79.6%.
Embodiment 1
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, is prepared from by following steps:
(1) attapulgite clay soluble in water is activated in the basic conditions；Specifically, attapulgite clay is dissolved in
After in water, with 10%NaOH solution regulate pH=8, continuously stirred under the conditions of activate 1h；
When dissolving attapulgite clay, in terms of mass fraction, attapulgite clay consumption is 10 parts, and the consumption of water is 44 parts；
(2) by acid for attapulgite clay aqueous solution furnishing after activation in step (1), iron sulfate is made to be carried on attapulgite clay
On；Specifically, in regulating step (1) after activation after attapulgite clay aqueous solution pH to 2, add iron sulfate powder, hold
Continuous stirring 1h；
(3), under heating condition, the solution system of step (2) adds polyvinylpyrrolidone, and forms stable dispersion
System；Specifically, the reaction system of step (2) is heated to 50 DEG C, add polyvinylpyrrolidone under constant temperature, the most strongly
Stirring 30 minutes, making solution is uniform and stable dispersion；
The K value of polyvinylpyrrolidone is K10；
(4) in the solution system of step (3), add magnesium sulfate powder, after being uniformly dispersed, be dried powder process, specifically, protect
Hold solution system temperature (50 DEG C) in step (3), under constant temperature add magnesium sulfate powder, continuously stirred be not less than 1 hour after,
It is dried powder process, is the silica-based dephosphorization agent of multi-load type provided herein；
In preparation process, in terms of mass fraction, material amounts ratio is, attapulgite clay consumption is 10 parts, the use of iron sulfate
Amount is 40 parts, and the consumption of polyvinylpyrrolidone is 1 part, and magnesium sulfate consumption is 5 parts.
During for precipitating phosphor in sewage element, with method in comparative example, silica-based for multi-load type dephosphorization agent is configured to matter
The solution of amount mark 30%, dephosphorization agent solid masses by water sample ten thousand/ mass ratio be added.Testing result shows,
Under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 1.04mg/L, and therefore dephosphorization efficiency is
89.6%。
Embodiment 2
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.91mg/L, because of
This dephosphorization efficiency is 90.9%.
Embodiment 3
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 3 hours.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.98mg/L, because of
This dephosphorization efficiency is 90.2%.
Embodiment 4
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.86mg/L, because of
This dephosphorization efficiency is 91.4%.
Embodiment 5
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 12.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 1.10mg/L, because of
This dephosphorization efficiency is 89.0%.
From above-described embodiment 1 ~ 3 it can be seen that for obtaining preferable phosphor-removing effect, prepare the silica-based dephosphorization agent of multi-load type
Time, activation deficiency will affect its load performance, proper extension attapulgite clay soak time and properly increase alkaline condition, have
It is beneficial to obtain more preferable phosphor-removing effect, but when long soak time and alkalescence condition are excessive, will result in sodium silicate dissolution too much,
Carrier concn is too low, and then has influence on phosphor-removing effect.
Embodiment 6
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.81mg/L, because of
This dephosphorization efficiency is 91.9%.
Embodiment 7
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 4.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.89mg/L, because of
This dephosphorization efficiency is 91.1%.
From above-described embodiment 6,7 it can be seen that step (2) optimum pH be 3, inappropriate pH value will affect silicon in solution
The auto polymerization degree of acid, and then affect the sedimentation effect after dephosphorization.
Embodiment 8
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.77mg/L, because of
This dephosphorization efficiency is 92.3%.
Embodiment 9
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 80 DEG C.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.79mg/L, because of
This dephosphorization efficiency is 92.1%.
From above-described embodiment 8,9 it can be seen that step (3) heating-up temperature optimum be 70 DEG C, uncomfortable temperature will impact
The expansion of polyvinylpyrrolidone and relaying load effect.
Embodiment 10
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 20 parts, water be 45 parts, the mass fraction of iron sulfate be 20 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.66mg/L, because of
This dephosphorization efficiency is 93.4%.
Embodiment 11
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 15 parts, water be 40 parts, the mass fraction of iron sulfate be 30 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.58mg/L, because of
This dephosphorization efficiency is 94.2%.
Embodiment 12
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 20 parts, water be 45 parts, the mass fraction of iron sulfate be 20 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.65mg/L, because of
This dephosphorization efficiency is 93.5%.
Embodiment 13
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 30 parts, water be 45 parts, the mass fraction of iron sulfate be 10 parts, poly-second
The mass fraction of alkene pyrrolidone is 10 parts, the mass fraction of magnesium sulfate is 15 parts.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.89mg/L, because of
This dephosphorization efficiency is 91.1%.
By above example 10 ~ 13 it can be seen that the mass fraction that optimal material proportion is attapulgite clay be 15 parts,
Water is 40 parts, the mass fraction of iron sulfate is 30 parts, the mass fraction of polyvinylpyrrolidone is 5 parts, the mass parts of magnesium sulfate
Number is 10 parts.
Embodiment 14
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 15 parts, water be 40 parts, the mass fraction of iron sulfate be 30 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts；
And adjust polyvinylpyrrolidone K value for K30.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.51mg/L, because of
This dephosphorization efficiency is 94.9%.
Embodiment 15
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 15 parts, water be 40 parts, the mass fraction of iron sulfate be 30 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts；
And adjust polyvinylpyrrolidone K value for K90.
During for precipitating phosphor in sewage element, with method in comparative example, by water sample ten thousand/ mass ratio add
Add.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.47mg/L, because of
This dephosphorization efficiency is 95.3%.
By embodiment 14,15 it can be seen that along with the increase of polyvinylpyrrolidone K value, dephosphorization efficiency is also constantly carrying
Height, but during too high K value, make polyvinylpyrrolidone high cost, therefore optimum K value is K90.
Embodiment 16
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 15 parts, water be 40 parts, the mass fraction of iron sulfate be 30 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts；
And adjust polyvinylpyrrolidone K value for K90.
During for precipitating phosphor in sewage element, with method in comparative example, enter by the mass ratio of water sample 5/10000ths
Row adds.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 0.22mg/
L, therefore dephosphorization efficiency is 97.8%.
Embodiment 17
The silica-based dephosphorization agent of multi-load type that the present embodiment is provided, its preparation method is with embodiment 1, only in set-up procedure (1)
Soak time is 2 hours, and in set-up procedure (1), pH value is 10, and in set-up procedure (2), pH value is 3, heating in set-up procedure (3)
Temperature is 70 DEG C；
Adjust simultaneously the mass fraction of attapulgite clay be 15 parts, water be 40 parts, the mass fraction of iron sulfate be 30 parts, poly-second
The mass fraction of alkene pyrrolidone is 5 parts, the mass fraction of magnesium sulfate is 10 parts；
And adjust polyvinylpyrrolidone K value for K90.
During for precipitating phosphor in sewage element, with method in comparative example, enter by the mass ratio of water sample 5/10000ths
Row adds.Testing result shows, under liquid level, 2 centimeters supernatant are limpid colourless, and after dephosphorization, in water sample, total phosphorus content is 1.86mg/
L, therefore dephosphorization efficiency is 81.4%.
By embodiment 16,17 it can be seen that along with the increase of Novel dephosphorization agent consumption, dephosphorization efficiency is also improving constantly,
When consumption reduces, dephosphorization efficiency also will decline.Therefore, under different application environmental condition, reality can be determined according to concrete effluent index
Border consumption.For town sewage, according to " urban wastewater treatment firm pollutant emission standard ", dosage be water sample ten thousand/
Mass ratio time, typically can meet discharge standard.
In a word, for summary embodiment and comparative example, the silica-based dephosphorization agent gram of multi-load type provided by the present invention
Take the use limitation of existing chemical dephosphorization agent, for improving water body dephosphorized effect, there is certain benefit, suitably optimized
After the preparation method of dephosphorization agent, it has the most water body dephosphorized advantage, thus has preferable application value.
Claims (8)
1. the silica-based dephosphorization agent of multi-load type, it is characterised in that be prepared from by following steps:
(1) attapulgite clay soluble in water is activated in the basic conditions；
(2) by acid for attapulgite clay aqueous solution furnishing after activation in step (1), iron sulfate is made to be carried on attapulgite clay
On；
(3), under heating condition, the solution system of step (2) adds polyvinylpyrrolidone, and forms stable dispersion
System；
(4) in the solution system of step (3), add magnesium sulfate powder, after being uniformly dispersed, be dried powder process；
In preparation process, in terms of mass fraction, material amounts ratio is, attapulgite clay consumption is 10 ~ 30 parts, iron sulfate
Consumption is 10 ~ 40 parts, and the consumption of polyvinylpyrrolidone is 1 ~ 10 part, and magnesium sulfate consumption is 5 ~ 15 parts.
2. the silica-based dephosphorization agent of multi-load type as claimed in claim 1, it is characterised in that described in step (1), alkalescence is pH=
10。
3. the silica-based dephosphorization agent of multi-load type as claimed in claim 1, it is characterised in that described in step (2), acidity is pH=3.
4. the silica-based dephosphorization agent of multi-load type as claimed in claim 1, it is characterised in that described in step (3), heating-up temperature is
70℃。
5. the as claimed in claim 1 silica-based dephosphorization agent of multi-load type, it is characterised in that polyvinylpyrrolidone K value be K10 ~
K90。
6. the silica-based dephosphorization agent of multi-load type as claimed in claim 1, it is characterised in that in terms of mass fraction, material amounts ratio
Example is, attapulgite clay consumption is 15 parts, and the consumption of iron sulfate is 30 parts, and the consumption of polyvinylpyrrolidone is 5 parts, sulphuric acid
Magnesium consumption is 10 parts.
7. the preparation method of the silica-based dephosphorization agent of multi-load type described in claim 1, it is characterised in that specifically include following step
Rapid:
(1) attapulgite clay soluble in water is activated in the basic conditions；Specifically, attapulgite clay is dissolved in
After in water, regulate pH=8 ~ 12, continuously stirred under the conditions of activate 1 ~ 3h；
(2) by acid for attapulgite clay aqueous solution furnishing after activation in step (1), iron sulfate is made to be carried on attapulgite clay
On；Specifically, in regulating step (1) after activation after attapulgite clay aqueous solution pH to 2 ~ 4, add iron sulfate powder, continue
Stirring is no less than 1h；
(3), under heating condition, the solution system of step (2) adds polyvinylpyrrolidone, and forms stable dispersion
System；Specifically, the reaction system of step (2) is heated to 50 ~ 80 DEG C, add polyvinylpyrrolidone under constant temperature, then
Strong agitation is no less than 30 minutes, and making solution is uniform and stable dispersion；
(4) in the solution system of step (3), add magnesium sulfate powder, after being uniformly dispersed, be dried powder process, specifically, protect
Hold solution system temperature in step (3), under constant temperature add magnesium sulfate powder, continuously stirred be not less than 1 hour after, be dried system
The silica-based dephosphorization agent of multi-load type provided herein it is after powder.
8. multi-load type silica-based dephosphorization agent application in sewage disposal described in claim 1, it is characterised in that total phosphorus is contained
The amount sewage less than 10mg/L, consumption is Water quality 1.0/10000ths ~ the ten thousand of the silica-based dephosphorization agent of multi-load type/
1.5。
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