CN109354145A - A method of organic waste water modification flocculant is prepared with diatomite - Google Patents
A method of organic waste water modification flocculant is prepared with diatomite Download PDFInfo
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- CN109354145A CN109354145A CN201811404528.XA CN201811404528A CN109354145A CN 109354145 A CN109354145 A CN 109354145A CN 201811404528 A CN201811404528 A CN 201811404528A CN 109354145 A CN109354145 A CN 109354145A
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- flocculant
- diatomite
- waste water
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- modified
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 230000004048 modification Effects 0.000 title claims abstract description 14
- 238000012986 modification Methods 0.000 title claims abstract description 14
- 239000010815 organic waste Substances 0.000 title claims abstract description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004411 aluminium Substances 0.000 claims abstract description 21
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920002472 Starch Polymers 0.000 claims abstract description 16
- 235000019698 starch Nutrition 0.000 claims abstract description 16
- 239000008107 starch Substances 0.000 claims abstract description 16
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 235000019353 potassium silicate Nutrition 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 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 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 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 5
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims description 4
- 229940106681 chloroacetic acid Drugs 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims 1
- 239000005909 Kieselgur Substances 0.000 claims 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000008394 flocculating agent Substances 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract 1
- 230000000192 social effect Effects 0.000 abstract 1
- HQAITFAUVZBHNB-UHFFFAOYSA-N sodium;pentahydrate Chemical compound O.O.O.O.O.[Na] HQAITFAUVZBHNB-UHFFFAOYSA-N 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 238000005189 flocculation Methods 0.000 description 5
- 230000016615 flocculation Effects 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- LSQZJLSUYDQPKJ-NJBDSQKTSA-N amoxicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=C(O)C=C1 LSQZJLSUYDQPKJ-NJBDSQKTSA-N 0.000 description 3
- 229960003022 amoxicillin Drugs 0.000 description 3
- LSQZJLSUYDQPKJ-UHFFFAOYSA-N p-Hydroxyampicillin Natural products O=C1N2C(C(O)=O)C(C)(C)SC2C1NC(=O)C(N)C1=CC=C(O)C=C1 LSQZJLSUYDQPKJ-UHFFFAOYSA-N 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910017358 Fe2(SO4) Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 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
- 230000000035 biogenic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of methods for preparing organic waste water modification flocculant with diatomite, belong to organic wastewater processing technology field.The method of the invention extracts SiO using diatomite as raw material2Metasilicate pentahydrate sodium is synthesized, then prepares polymeric aluminium ferrum silicate, and polymeric aluminium ferrum silicate (PAFCSC) flocculant of preparation is modified to obtain modified flocculant using carboxymethyl starch (CMS).The present invention prepares flocculant with diatomite and meets requirement to comprehensive utilization of natural resources, and, it is all very big in China or even All Around The World to the demand of flocculant at present, aluminium system and iron-based flocculating agent occupy very big market with its good treatment effect and low cost, therefore prepare PAFCS flocculant using diatomite and have very big economic significance and social effect.
Description
Technical field
The present invention relates to a kind of methods for preparing organic waste water modification flocculant with diatomite, belong to organic wastewater processing
Technical field.
Background technique
Diatomite is a kind of siliceous rock, it is mainly made of the remains of ancient times diatom, is a kind of biogenic silicon
Matter sedimentary rock.Its chemical component is with SiO2Based on, SiO can be used2·nH2O indicate, mineralogical composition be opal and its mutation, and
Contain a small amount of Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 and organic matter.It is mainly distributed on China, the U.S., Japan, pellet
The states such as wheat, France, about 3.2 hundred million tons of China's diatomite reserves, prospective reserves is concentrated mainly on East China and northeast ground up to more than 20 hundred million tons
Area, wherein larger, reserves it is more have Linjiang city, proven reserve accounts for first, Asia at present, Zhejiang, Yunnan,
Shandong, Sichuan etc. save, though distribution is wide, high-quality soil concentrates merely on Changbai Mountain area, and most of other mineral deposits are 3 ~ 4 grades
Soil, due to impurity content height, cannot direct deep processing and utilization,.
Diatomite is a physico-chemical process sewage disposal technology, efficient modification infusorial earth sewage in processing organic sewage technology
Inorganic agent is the key that the technology, and the present invention directly prepares high performance polymeric aluminium ferrum silicate flocculant by raw material of diatomite,
And processing is modified to it using cheap and easy to get, environmentally protective starch, the processing capacity to organic wastewater is improved, this basis
The process flow and process facility of upper cooperation, technology can realize purpose that is efficient, stable and inexpensively handling organic wastewater.
" protection environment, handle three-waste pollution " is the eternal topic in China or even the world.The pollution of waste water is also in China
Extremely serious, many restrictions have also been made to the discharge of wastewater of enterprise in national policy, however the cost of water treatment of great number, cause very
Multiple enterprises stealthily sewage effluent the phenomenon that, bring huge harm to environment.It is how more efficient, to handle these at low cost useless
How water produces the water process reagent of high performance cheap, is an important topic for alleviating contaminated wastewater.
Summary of the invention
The purpose of the present invention is to solve the deficiency that the prior art utilizes diatomite, provides and a kind of prepared with diatomite
The method of organic wastewater modified flocculant, specifically includes the following steps:
A method of organic waste water modification flocculant is prepared with diatomite, which is characterized in that specifically includes the following steps:
(1) polymeric aluminium ferrum silicate is prepared with diatomite: SiO is extracted from diatomite2, with the SiO of extraction2Prepare waterglass, water
Glass adds aluminum sulfate after being diluted with distilled water and polymeric aluminium ferrum silicate is made in ferric sulfate；
(2) modified carboxymethyl starch (CMS) is added in the ratio of 0.002g/ mL ~ 0.020g/ mL and is prepared with diatomite
Polymer aluminium silicate ferrous solution in, then in 0.0005g/mL ~ 0.010g/mL ratio be added initiator potassium persulfate, in magnetic
It is sufficiently mixed under power stirring, reacts 1min ~ 30min under microwave condition, by acquired solution water bath method, abundant drying is simultaneously ground
It is CMS-PAFCS modified flocculant at dark gray powder shape.
Dioxide-containing silica is 70%-96%, iron oxide content 0.5%-1.5%, oxygen in raw material diatomite of the present invention
Change aluminium content is 1%-6%.
The carboxymethyl starch of modification of the present invention the preparation method comprises the following steps: by 6g~12g soluble starch be added 10mL~
In the ethyl alcohol of 20 mL, it is put into and 30 DEG C~40 DEG C is sufficiently stirred and be heated in heated at constant temperature magnetic agitation water-bath, be then added
The NaOH solid of 2.5g~3.5g after continuing 40~50min of stirring, sequentially adds 10-15ml dissolved with mono- chlorine of 7.0g~7.5g
The aqueous isopropanol of acetic acid and the NaOH solid of 2.5g~3.5g increase temperature to 45 DEG C, sufficiently react 100min~120min
Afterwards, it is neutralized to neutrality with acetum, filters and is washed with 80% ethanol solution to no Cl-, by the solid after filtration washing
Substance is dry under the conditions of 55 DEG C~65 DEG C, and required modified material carboxymethyl starch can be obtained.
Microwave condition of the present invention is 100W ~ 600W.
The organic wastewater modified flocculant of the method for the invention preparation is for handling organic wastewater: adjusting wastewater pH into
Property or alkalinity, according to 0.1g/L~1.6g/L additive amount be added CMS-PAFCS flocculant be sufficiently stirred, flocculation sedimentation 5min~
60in, supernatant are treated waste water.
Aluminium of the present invention, iron-based flocculating agent are introduced made of hydroxyl in silicic acid acid aluminium, iron molecule race reticular structure
Inorganic polymer flocculant by bridge formation, is crosslinked and particle in waste water is promoted to flocculate the effects of adherency, aluminium, iron ion institute
It is positively charged and can effectively neutralize the negative particles in water, the Zeta potential of colloid is reduced, micelle stability is destroyed, so that glue
Group forms flocculation sedimentation by collision, and the precipitation surface product formed is big, there is stronger adsorption capacity.
Beneficial effects of the present invention:
(1) inorganic-organic hybrid high polymer coagulant has both the advantage of the two simultaneously, has affected by environment small, and wadding body is big,
PH wide adaptation range, it is cheap the advantages that.
(2) high temperature being generated by microwave method to activate diatomite, being heated compared to electric furnace, heating efficiency is mentioned
Height, and can be energy saving.
(3) modified flocculant is prepared using diatomite, diatomite utilization rate, and prepared flocculant pair can be improved
Waste water has preferable treatment effect, preferably realizes the conversion of natural resources.
Specific embodiment
The present invention is described in further details with specific embodiment below, but protection scope of the present invention is not limited to institute
State content.
Embodiment 1
A method of organic waste water modification flocculant being prepared with diatomite, specifically includes the following steps:
(1) polymeric aluminium ferrum silicate is prepared with diatomite: SiO is extracted from diatomite2, optimum process condition are as follows: m diatomite: m carbon
Sour sodium is 1: 1.1,750 DEG C of maturing temperature, 1.8 h of calcining time, carries out acidleach with the hydrochloric acid of 3.0 mol/L；It is molten
When glue-gel bath temperature is 94 DEG C, SiO2Yield be 84% or so；With the SiO of extraction2Prepare waterglass, dry method and wet
Method；Waterglass is diluted to SiO with distilled water2Content is 3%, adjusts pH to 6 with 20% sulfuric acid acidification and polymerize instead
It answers, adds aluminum sulfate (Al2(SO4) and ferric sulfate (Fe2(SO4) polymeric aluminium ferrum silicate is made, then pH to 2 is adjusted, wherein n
(Al): n(Fe): n(Si)=5: 2: 1.
(2) preparation of CMS: the ethyl alcohol of 6g soluble starch and 10mL is added in the beaker of 250mL, is put into constant temperature and is added
It is sufficiently stirred in pyromagnetic force stirring water-bath and is heated to 30 DEG C, 2.5gNaOH solid is then added, continued after stirring 40min,
The NaOH solid for sequentially adding aqueous isopropanol and 2.5g of the 10ml dissolved with 7.0g chloroacetic acid increases temperature to 55 DEG C, fills
After dividing reaction 100min, it is neutralized to neutrality with acetum, filters and is simultaneously washed with 80% ethanol solution to no Cl-, will filter
Solid matter after washing is dry under the conditions of 60 DEG C, and required modified material CMS can be obtained.
(3) modified carboxy methyl starch (CMS) is added to the polymerization silicon prepared with diatomite in the ratio of 0.002g/ mL
In sour ferro-aluminum solution, the diatomite material feature of polymeric aluminium ferrum silicate is prepared are as follows: dioxide-containing silica range is 70%, iron oxide
Content range is 0.5%, and alumina content range is 1%；Initiator potassium persulfate 0.0005g/L is added, under magnetic stirring
It is sufficiently mixed, then pours into mixed liquor in the conical flask of 250mL, be grafted 60min under 100W microwave condition, by acquired solution
Water bath method is sufficiently dried and is ground into powder in thermostatic drying chamber, as gained CMS-PAFCS modified flocculant.
The CMS-PAFCS modified flocculant that the present embodiment is prepared is for handling organic wastewater, below with Amoxicillin
For waste water, process conditions are as follows: under the conditions of influent waste water concentration is 600mg/L or so, adjusting wastewater pH to neutral or alkali
Property, CMS-PAFCS flocculant, which is added, according to the additive amount of 0.1g/L is sufficiently stirred, flocculation sedimentation 60min, and supernatant is to handle
Waste water afterwards；Wastewater COD removal rate can reach 68% or more.
Embodiment 2
A method of organic waste water modification flocculant being prepared with diatomite, specifically includes the following steps:
(1) polymeric aluminium ferrum silicate is prepared with diatomite: SiO is extracted from diatomite2, with the SiO of extraction2Prepare waterglass, water
Glass adds aluminum sulfate after being diluted with distilled water and polymeric aluminium ferrum silicate is made in ferric sulfate, and actual conditions are the same as embodiment 1.
(2) preparation of CMS: the ethyl alcohol of 9g soluble starch and 15mL is added in the beaker of 250mL, is put into constant temperature and is added
It is sufficiently stirred in pyromagnetic force stirring water-bath and is heated to 35 DEG C, 3gNaOH solid is then added, continued after stirring 45min, according to
The NaOH solid of the secondary aqueous isopropanol that 12.5ml is added dissolved with 7.25g chloroacetic acid and 3g increases temperature to 60 DEG C, sufficiently
After reacting 110min, it is neutralized to neutrality with acetum, filters and is washed with 80% ethanol solution to no Cl-, by diafiltration
Solid matter after washing is dry under the conditions of 60 DEG C, and required modified material CMS can be obtained.
(3) modified carboxy methyl starch (CMS) is added to the polymerization silicon prepared with diatomite in the ratio of 0.011g/ mL
In sour ferro-aluminum solution, the diatomite material feature of polymeric aluminium ferrum silicate is prepared are as follows: dioxide-containing silica range is 88%, iron oxide
Content range is 1%, and alumina content range is 3.5%.Initiator potassium persulfate 0.00525g/mL is added, in magnetic agitation
Under be sufficiently mixed, then mixed liquor is poured into the conical flask of 250mL, is grafted 30min under 350W microwave condition, gained is molten
Liquid water bath method is sufficiently dried and is ground into powder in thermostatic drying chamber, as gained CMS-PAFCS modified flocculant.
The CMS-PAFCS modified flocculant that the present embodiment is prepared is for handling organic wastewater, below with Amoxicillin
For waste water, process conditions are as follows: under the conditions of influent waste water concentration is 700mg/L or so, adjusting wastewater pH to neutral or alkali
Property, CMS-PAFCS flocculant, which is added, according to the additive amount of 0.85g/L is sufficiently stirred, flocculation sedimentation 33min, and supernatant is to locate
Waste water after reason；Wastewater COD removal rate can reach 76% or more, and treated waste strength is 100mg/L hereinafter, reaching
National emission standard.
Embodiment 3
A method of organic waste water modification flocculant being prepared with diatomite, specifically includes the following steps:
(1) polymeric aluminium ferrum silicate is prepared with diatomite: SiO is extracted from diatomite2, with the SiO of extraction2Prepare waterglass, water
Glass adds aluminum sulfate after being diluted with distilled water and polymeric aluminium ferrum silicate is made in ferric sulfate, and actual conditions are the same as embodiment 1.
(2) preparation of CMS: the ethyl alcohol of 12g soluble starch and 20mL is added in the beaker of 250mL, constant temperature is put into
It is sufficiently stirred in heating magnetic agitation water-bath and is heated to 40 DEG C, 3.5gNaOH solid is then added, continue to stir 50min
Afterwards, sequentially add 15ml dissolved with 7.5g chloroacetic acid aqueous isopropanol and 3.5g NaOH solid, increase temperature to 65 DEG C,
After sufficiently reaction 120min, it is neutralized to neutrality with acetum, filters and is washed with 80% ethanol solution to no Cl-, incited somebody to action
Solid matter after filter washing is dry under the conditions of 60 DEG C, and required modified material CMS can be obtained.
(3) modified carboxy methyl starch (CMS) is added to the polymerization silicon prepared with diatomite in the ratio of 0.011g/ mL
In sour ferro-aluminum solution, the diatomite material feature of polymeric aluminium ferrum silicate is prepared are as follows: dioxide-containing silica range is 96%, iron oxide
Content range is 1.5%, and alumina content range is 6%.Initiator potassium persulfate 0.010g/mL is added, under magnetic stirring
It is sufficiently mixed, then pours into mixed liquor in the conical flask of 250mL, be grafted 10min under 600W microwave condition, by acquired solution
Water bath method is sufficiently dried and is ground into powder in thermostatic drying chamber, as gained CMS-PAFCS modified flocculant.
The CMS-PAFCS modified flocculant that the present embodiment is prepared is for handling organic wastewater, below with Amoxicillin
For waste water, process conditions are as follows: under the conditions of influent waste water concentration is 800mg/L or so, adjusting wastewater pH to neutral or alkali
Property, CMS-PAFCS flocculant, which is added, according to the additive amount of 1.6g/L is sufficiently stirred, flocculation sedimentation 10min, and supernatant is to handle
Waste water afterwards；Wastewater COD removal rate can reach 87% or more.
Claims (5)
1. a kind of method for preparing organic waste water modification flocculant with diatomite, which is characterized in that specifically includes the following steps:
(1) polymeric aluminium ferrum silicate is prepared with diatomite: SiO is extracted from diatomite2, with the SiO of extraction2Prepare waterglass, water glass
Glass adds aluminum sulfate after being diluted with distilled water and polymeric aluminium ferrum silicate is made in ferric sulfate；
(2) modified carboxymethyl starch is added in the ratio of 0.002g/ mL ~ 0.020g/ mL and is gathered with prepared by diatomite
It closes in aluminium iron silicate solution, initiator potassium persulfate then is added in the ratio of 0.0005g/mL ~ 0.010g/mL, is stirred in magnetic force
It mixes down and is sufficiently mixed, react 1min ~ 30min under microwave condition, by acquired solution water bath method, abundant drying is simultaneously ground into ash
Black powder is CMS-PAFCS modified flocculant.
2. the method for preparing organic waste water modification flocculant with diatomite according to claim 1, it is characterised in that: raw silicon
Dioxide-containing silica is 70%-96%, iron oxide content 0.5%-1.5%, alumina content 1%-6% in diatomaceous earth.
3. the method for preparing organic waste water modification flocculant with diatomite according to claim 1, it is characterised in that: modified
Carboxymethyl starch the preparation method comprises the following steps: by 6g~12g soluble starch be added the mL of 10mL~20 ethyl alcohol in, be put into constant temperature and add
It is sufficiently stirred in pyromagnetic force stirring water-bath and is heated to 30 DEG C~40 DEG C, the NaOH solid of 2.5g~3.5g is then added, after
After 40~50min of continuous stirring, sequentially add aqueous isopropanol and 2.5g of the 10-15ml dissolved with 7.0g~7.5g chloroacetic acid~
The NaOH solid of 3.5g increases temperature to 45 DEG C, after sufficiently reaction 100min~120min, is neutralized to neutrality with acetum,
It filters and is washed with 80% ethanol solution to no Cl-, the solid matter after filtration washing is done under the conditions of 55 DEG C~65 DEG C
It is dry, required modified material carboxymethyl starch can be obtained.
4. the method for preparing organic waste water modification flocculant with diatomite according to claim 1, it is characterised in that: micro-strip
Part is 100W ~ 600W.
5. the organic wastewater modified flocculant of claim 1 the method preparation is for handling organic wastewater, it is characterised in that: adjust
Wastewater pH is saved to neutral or alkalinity, CMS-PAFCS flocculant is added according to the additive amount of 0.1g/L~1.6g/L and is sufficiently stirred, wads a quilt with cotton
Retrogradation shallow lake 5min~60in, supernatant are treated waste water.
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Application publication date: 20190219 |