CN104437341A - Preparation method and application of adsorbent for treating zinc-containing waste water - Google Patents
Preparation method and application of adsorbent for treating zinc-containing waste water Download PDFInfo
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- CN104437341A CN104437341A CN201410690082.7A CN201410690082A CN104437341A CN 104437341 A CN104437341 A CN 104437341A CN 201410690082 A CN201410690082 A CN 201410690082A CN 104437341 A CN104437341 A CN 104437341A
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- ardealite
- zinc
- adsorbent
- water
- phosphogypsum
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- 239000011701 zinc Substances 0.000 title claims abstract description 49
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 48
- 239000002351 wastewater Substances 0.000 title claims abstract description 28
- 239000003463 adsorbent Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims abstract description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 30
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 11
- 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 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 230000009514 concussion Effects 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 238000005342 ion exchange Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 239000011780 sodium chloride Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract 6
- 239000002250 absorbent Substances 0.000 abstract 3
- 230000002745 absorbent Effects 0.000 abstract 3
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- 239000001164 aluminium sulphate Substances 0.000 abstract 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 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 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/048—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing phosphorus, e.g. phosphates, apatites, hydroxyapatites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a preparation method and application of an adsorbent for treating zinc-containing waste water and belongs to the technical field of heavy metal wastewater treatment. The preparation method comprises the following steps: performing pretreatment on phosphogypsum with sodium chloride, modifying phosphogypsum by adopting an aluminium sulphate modification technology to obtain an aluminium-base-modified phosphogypsum absorbent, allowing Al <3+> entering phosphogypsum layers through an ion exchange react to prop open the layers to increase the layer distance and diameter. Micropore structures of the absorbent provided by the invention are further increased, so that the porosity rate and the specific surface area of phosphogypsum are increased, and the absorbent has better adsorption performance; the further treated phosphogypsum has a higher adsorption capacity, so that the adsorbent becomes an excellent adsorbing material for removing zinc ions.
Description
Technical field
The present invention relates to a kind of preparation method and application of Treatment of Zinc-containing Wastewater adsorbent, belong to technical field of heavy metal wastewater treatment.
Background technology
Zinc is the heavy metal resources of a kind of reserves on earth compared with horn of plenty.China's zinc resource reserves occupy second place of the world, and zinc resource is also widely used in modern industry production as among smelting, pharmacy and food service industry.Zinc is the indispensable element of health, and it is extensively present in human muscle and bone, but content is very micro-, if excess serious consequence will occur.The main source of zinc-containing water is that its discharge of electroplating wastewater has serious harm to health and industrial or agricultural activity, there is the harm such as persistence, toxicity is large, seriously polluted, once can not be biodegradable after entered environment, great majority participate in food chain circulation, and finally accumulate in vivo, destroy organism normal physiological metabolic activity, be detrimental to health.Make a general survey of the treatment technology of plating zinc-containing water both at home and abroad at present, apply more, mainly contain compared with the technique of mature and reliable: the precipitation method, ion-exchange, electrolysis, absorption method, bioanalysis, membrane separation process etc.But these methods exist, and capital cost is high, operation complexity, can not recycle the shortcomings such as the mud after absorption.Therefore, find a kind of way of fine solution zinc pollution, for the maintenance of good ecological environment, the urban ecological environment that especially industry is flourishing is very important.
Ardealite is the solid waste produced in Wet-process phosphoric acid (WPPA) technical process, and its main component is CaSO
42H
2o, in May, 2006, State Environmental Protection Administration was with ring letter (2006) No. 176 civilian forms, by qualitative for ardealite be dangerous solid waste, be classified as the controlling object of national noxious waste pollution environment.Therefore the harmless treatment of ardealite and comprehensive utilization become one of focus of Resource Recovery of Industrial Solid Waste research field.
The recycling of ardealite has become the key that phosphate fertilizer industry realizes sustainable development.Therefore, how to fully utilize ardealite, control pollution that ardealite produces, the treatment of wastes with processes of wastes against one another, improve the value of ardealite, create good social benefit and environmental benefit and just seem and be even more important.Ardealite may be used for Treatment of Zinc-containing Wastewater in utilization, it is a kind of method of the treatment of wastes with processes of wastes against one another, but the ardealite adsorption capacity of non-modified and specific area on the low side, being directly used for Treatment of Zinc-containing Wastewater can not reach emission request (<2mg/L) to zinc in country " integrated wastewater discharge standard " (GB8978-1996).
It is the processing method disclosing a kind of zinc-containing water in the patent of CN102464398A at publication number.The method utilizes flocculence Treatment of Zinc-containing Wastewater.Its processing step is be the powdered substance prepared with the mass ratio of 1:1 ~ 1:5 by iron aluminocopiapite and amorphous silica, then this material is joined in zinc-containing water processes.Although the method dezincification effect is high, the preparation process of raw material is comparatively complicated, is unfavorable for large-scale industrial production.
Publication number be CN102464397A patent in disclose a kind of composite zinc removing agent method of Treatment of Zinc-containing Wastewater.The method utilizes By Bubble-floating Method Treatment of Zinc-containing Wastewater.Its processing step is for be re-dubbed composite zinc removing agent by organic matter and inorganic matter, join when pH value is 4.0 ~ 6.0 in zinc-containing water, after stirring 10 ~ 30min, the waste water of gained carries out air-flotation process again, finally one deck residue Slag Scraping Device floating over wastewater surface is struck off, water outlet can lower than national grade one discharge standard.The method equally the preparation of composite zinc removing agent and operating cost higher, be unfavorable for the comprehensive utilization of resources of discarded object.
Foreign study proves, the ardealite not carrying out modification has certain characterization of adsorption, has good absorption property under appropriate conditions to zinc.Ardealite simultaneously after absorption can utilize again as building materials after super-dry process, thus achieves the process of ardealite comprehensive utilization of resources.
Summary of the invention
Technical problem to be solved by this invention is to provide the method utilizing additive agent modified ardealite process to electroplate zinc-containing water, ardealite specific area after additive agent modified is large, adsorption capacity is high, and use modified ardealite Treatment of Zinc-containing Wastewater can reach the emission request to zinc in country " integrated wastewater discharge standard " (GB8978-1996).
Technical scheme of the present invention is as follows, through following each step:
(1) by ardealite sample broke to 120 ~ 180 order, spend deionized water 3 ~ 5 times to remove impurity in ardealite afterwards and obtain purifying ardealite, in saturated nacl aqueous solution, purifying ardealite is added in the ratio of 32 ~ 48g/L, be mixed with suspension, stir 3-7h under 30-40 DEG C of condition after, decompress filter, spend deionized water to neutral, normal temperature oven dry is less than or equal to 0.5% to water content and obtains sodium ardealite sample;
(2) in the ratio of 32 ~ 48g/L, sodium ardealite sample is added the Al that mass concentration is 1-5%
2(SO
4)
3in solution, stir 4-8h under 30-40 DEG C of condition after, decompress filter, spends deionized water to neutral, is less than or equal to 0.5% in 120-160 DEG C of oven dry to water content, then carries out grinding rear 120-180 mesh sieve excessively, obtains aluminium modified ardealite adsorbent.
The adsorbent that the preparation method of Treatment of Zinc-containing Wastewater adsorbent of the present invention prepares is for the treatment of zinc-containing water, comprise the following steps: the adsorbent prepared is joined in zinc-containing water with the ratio of 8 ~ 12g/L, in waste water, the concentration of zinc ion is 50-90mg/L, and be fully uniformly mixed, muddy water filtration is carried out contact concussion 90 ~ 120min at 15 ~ 20 DEG C after, discard filter residue, and measure the content of zinc ion in the filtrate after process.
The present invention adopts sodium chloride and aluminum sulfate as additive, carries out modification produce and obtain aluminium base modified ardealite adsorbent, Al ardealite
3+ardealite interlayer is entered into by ion-exchange reactions, and make interlayer strut to add large interlamellar spacing and aperture, the microcellular structure of this adsorbent increases further, thus improve porosity and the specific area of ardealite, there is good absorption property, make the ardealite after process have higher adsorption capacity further, enable to become a kind of good adsorbent material removing zinc ion; Compared with prior art, the invention has the advantages that:
(1) the present invention utilizes sodium chloride and aluminum sulfate modified ardealite, increases the specific area of ardealite, makes it have better adsorption function;
(3) the present invention can realize the removal to zinc in waste water, and overall adsorption amount is higher, under best theoretical condition, aluminium base modified ardealite can reach 69.8mg/g to the adsorbance of zinc, thus has important practical significance to containing the improvement of Zn Cr coating waste water and the improvement of water environment;
(4) the present invention produces the raw material phosphor gypsum of adsorbent is trade waste, provides new thinking by for the treatment of wastes with processes of wastes against one another.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
Embodiment 1
(1) by ardealite sample broke to 120 order, wash magazins' layout in 3 removal ardealites by deionized water and obtain purifying ardealite, 8g purifying ardealite is dissolved in 250mL saturated nacl aqueous solution, be mixed with suspension, stir 3h under 30 DEG C of conditions after, decompress filter, spend deionized water to neutral, normal temperature oven dry is less than or equal to 0.5% to water content and obtains sodium ardealite sample;
(2) 8g sodium ardealite sample is added the Al that 250mL mass concentration is 1%
2(SO
4)
3in solution, stir 4h under 30 DEG C of conditions after, decompress filter, spends deionized water to neutral, is less than or equal to 0.5%, then carries out grinding rear mistake 120 mesh sieve, obtain aluminium modified ardealite adsorbent in 120 DEG C of oven dry to water content;
(3) step (2) gained adsorbent is added in zinc-containing water with the amount of 8g/L, in waste water, the concentration of zinc ion is 50mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 90 minutes at 15 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 1.2mg/L.
Embodiment 2
(1) by ardealite sample broke to 160 order, wash magazins' layout in 4 removal ardealites by deionized water and obtain purifying ardealite, 10g purifying ardealite is dissolved in 250mL saturated nacl aqueous solution, be mixed with suspension, stir 5h under 35 DEG C of conditions after, decompress filter, spend deionized water to neutral, normal temperature oven dry is less than or equal to 0.5% to water content and obtains sodium ardealite sample;
(2) 10g sodium ardealite sample is added the Al that 250mL mass concentration is 3%
2(SO
4)
3in solution, stir 6h under 35 DEG C of conditions after, decompress filter, spends deionized water to neutral, is less than or equal to 0.5%, then carries out grinding rear mistake 160 mesh sieve, obtain aluminium modified ardealite adsorbent in 140 DEG C of oven dry to water content;
(3) step (2) gained adsorbent is added in zinc-containing water with the amount of 10g/L, in waste water, the concentration of zinc ion is 70mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 100 minutes at 18 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 0.8mg/L.
Embodiment 3
(1) by ardealite sample broke to 180 order, wash magazins' layout in 5 removal ardealites by deionized water and obtain purifying ardealite, 12g purifying ardealite is dissolved in 250mL saturated nacl aqueous solution, be mixed with suspension, stir 7h under 40 DEG C of conditions after, decompress filter, spend deionized water to neutral, normal temperature oven dry is less than or equal to 0.5% to water content and obtains sodium ardealite sample;
(2) 12g sodium ardealite sample is added the Al that 250mL mass concentration is 5%
2(SO
4)
3in solution, stir 8h under 40 DEG C of conditions after, decompress filter, spends deionized water to neutral, is less than or equal to 0.5%, then carries out grinding rear mistake 180 mesh sieve, obtain aluminium modified ardealite adsorbent in 160 DEG C of oven dry to water content;
(3) step (2) gained adsorbent is added in zinc-containing water with the amount of 12g/L, in waste water, the concentration of zinc ion is 90mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 120 minutes at 20 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 0.4mg/L.
Comparative example 1
(1) by ardealite sample broke to 120 order, wash magazins' layout in 3 removal ardealites by deionized water and obtain purifying ardealite sample;
(2) step (1) gained adsorbent is added in zinc-containing water with the amount of 8g/L, in waste water, the concentration of zinc ion is 50mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 90 minutes at 15 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 23.8mg/L.
Comparative example 2
(1) by ardealite sample broke to 160 order, wash magazins' layout in 4 removal ardealites by deionized water and obtain purifying ardealite;
(2) step (1) gained adsorbent is added in zinc-containing water with the amount of 10g/L, in waste water, the concentration of zinc ion is 70mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 100 minutes at 18 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 29.8mg/L.
Comparative example 3
(1) by ardealite sample broke to 180 order, wash magazins' layout in 5 removal ardealites by deionized water and obtain purifying ardealite;
(2) step (1) gained adsorbent is added in zinc-containing water with the amount of 12g/L, in waste water, the concentration of zinc ion is 90mg/L, and is fully uniformly mixed, and contacts concussion and carry out muddy water filtration after 120 minutes at 20 DEG C, discard filter residue, in the filtrate after process, the content of zinc is 36.3mg/L.
Claims (2)
1. a preparation method for Treatment of Zinc-containing Wastewater adsorbent, is characterized in that, specifically comprises the following steps:
(1) by ardealite sample broke to 120 ~ 180 order, spend deionized water 3 ~ 5 times to remove impurity in ardealite afterwards and obtain purifying ardealite, in saturated nacl aqueous solution, purifying ardealite is added in the ratio of 32 ~ 48g/L, be mixed with suspension, stir 3-7h under 30-40 DEG C of condition after, decompress filter, spend deionized water to neutral, normal temperature oven dry is less than or equal to 0.5% to water content and obtains sodium ardealite sample;
(2) in the ratio of 32 ~ 48g/L, sodium ardealite sample is added the Al that mass concentration is 1-5%
2(SO
4)
3in solution, stir 4-8h under 30-40 DEG C of condition after, decompress filter, spends deionized water to neutral, is less than or equal to 0.5% in 120-160 DEG C of oven dry to water content, then carries out grinding rear 120-180 mesh sieve excessively, obtains aluminium modified ardealite adsorbent.
2. the adsorbent for preparing of the preparation method of Treatment of Zinc-containing Wastewater adsorbent according to claim 1 is for the treatment of zinc-containing water, it is characterized in that: the adsorbent prepared is joined in zinc-containing water with the ratio of 8 ~ 12g/L, in waste water, the concentration of zinc ion is 50-90mg/L, and be fully uniformly mixed, muddy water filtration is carried out contact concussion 90 ~ 120min at 15 ~ 20 DEG C after, discard filter residue, and measure the content of zinc ion in the filtrate after process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690082.7A CN104437341B (en) | 2014-11-27 | 2014-11-27 | The preparation method of a kind of Treatment of Zinc-containing Wastewater adsorbent and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690082.7A CN104437341B (en) | 2014-11-27 | 2014-11-27 | The preparation method of a kind of Treatment of Zinc-containing Wastewater adsorbent and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104437341A true CN104437341A (en) | 2015-03-25 |
| CN104437341B CN104437341B (en) | 2016-06-22 |
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827504A (en) * | 2017-12-18 | 2018-03-23 | 寿光菌禾生物科技有限公司 | A kind of biological organic fertilizer with prevention and control root knot nematode disease function and preparation method thereof |
| CN113481348A (en) * | 2021-06-30 | 2021-10-08 | 广东牧人王电器有限公司 | Adsorption treatment process for harmful substances in cooking pot |
| CN113996265A (en) * | 2021-11-02 | 2022-02-01 | 南京理工大学 | Preparation method and application of iron-modified phosphogypsum |
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| CN113481348A (en) * | 2021-06-30 | 2021-10-08 | 广东牧人王电器有限公司 | Adsorption treatment process for harmful substances in cooking pot |
| CN113996265A (en) * | 2021-11-02 | 2022-02-01 | 南京理工大学 | Preparation method and application of iron-modified phosphogypsum |
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