CN109384295A - A kind of environmental protection water purification agent and preparation method thereof - Google Patents
A kind of environmental protection water purification agent and preparation method thereof Download PDFInfo
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- CN109384295A CN109384295A CN201811364611.9A CN201811364611A CN109384295A CN 109384295 A CN109384295 A CN 109384295A CN 201811364611 A CN201811364611 A CN 201811364611A CN 109384295 A CN109384295 A CN 109384295A
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- water purification
- purification agent
- aluminium sludge
- environmental protection
- sludge
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000000746 purification Methods 0.000 title claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 58
- 230000007613 environmental effect Effects 0.000 title claims description 30
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000010802 sludge Substances 0.000 claims abstract description 92
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 60
- 239000004411 aluminium Substances 0.000 claims abstract description 53
- 150000001398 aluminium Chemical class 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 34
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 22
- 238000012986 modification Methods 0.000 claims abstract description 12
- 230000004048 modification Effects 0.000 claims abstract description 12
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000003837 high-temperature calcination Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 7
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical group [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 6
- 238000003756 stirring Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 241000628997 Flos Species 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 10
- 238000007605 air drying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 239000010842 industrial wastewater Substances 0.000 description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- -1 Oxygen radical ion Chemical class 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229920000344 molecularly imprinted polymer Polymers 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- C02F1/5236—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
- C02F1/28—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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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)
- Treatment Of Sludge (AREA)
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of environmentally friendly water purification agent, including inorganic metal sulfate, polyacrylamide, modified aluminium sludge, the weight ratio of three is followed successively by 24-40:3-10:40-60, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.The present invention is by being mixed with water purification agent with inorganic metal sulfate and polyacrylamide again for aluminium sludge modification, since modified aluminium sludge specific surface area increases, adsorption site increases, therefore the absorption property and the rate of adsorption of water purification agent are substantially increased, the floss particle of formation is big, it is easy to settle, strainability is good, can be perfectly suitable for different types of wastewater treatment；Using aluminium sludge as raw material, the cost of water purification agent is greatly reduced, the utility value of aluminium sludge is improved, it is made to turn waste into wealth.
Description
Technical field
The present invention relates to technical field of sewage, relate more specifically to a kind of environmentally friendly water purification agent and preparation method thereof.
Background technique
Attention with the raising and government of Public environmental attitude to environmental protection, each business unit also gradually weigh sewage treatment
Depending on getting up.Common sewage/waste water includes industrial wastewater, such as printing and dyeing, electroplating wastewater and sanitary sewage.With printing and dyeing industry
Development, dyes, dye structure and stability all increase, and the COD content of dyeing waste water is higher, chroma in waste water
It is high.Containing heavy metal ion and cyanides such as chromium, cadmium, nickel, copper, zinc, gold, silver in electroplating wastewater, have to human health certain
Influence, being discharged into soil will also result in heavy metal pollution of soil.Sanitary sewage is mainly various washings used in urban life
Agent and sewage, rubbish, excrement etc. also often contain containing large amount of organic, such as cellulose, starch, carbohydrate and fat protein
Pathogen, therefore under anaerobic bacteria effect, easily raw odorant.
Water purification agent is exactly to throw mainly play the mesh of water purification with the aitiogenic medicaments of impurity other in water into the water
's.Sewage during processing, will use arrive water purification agent.Traditional water purification agent is mainly aluminum sulfate, and raw material sources are extensive,
It is cheap, therefore be widely used, but its function is relatively single.With the progress of industry, the kind of industrial wastewater
Class is increasing, and industrial wastewater needs the pollutant kind removed also to increase, and in sewage disposal process, needs to reduce COD, takes off
Color removes removing heavy metals, reduces phosphorus content etc., and traditional water purification agent aluminum sulfate is only used only can not meet purification dirt well
The purpose of water, it is therefore desirable to which water purification agent having multi-functions is just able to satisfy the demand in the market to water purification agent.
During aluminium product, in polishing, pickling and oxidation process, some waste water can be generated, waste water is by flocculation
After precipitating, the sludge for mainly containing alutan can be obtained.Currently, the main processing ways of sludge are landfills, this is not only
A large amount of land resource is occupied, also will cause a degree of soil pollution, therefore develop one and can make full use of aluminium sludge
Approach, improve aluminium sludge utility value, it is very necessary for so that it is turned waste into wealth.
Summary of the invention
The object of the present invention is to provide a kind of cheap, efficient, stable environmentally friendly water purification agents, and it is suitable for various industry
The processing of waste water and sanitary sewage.
The technical solution adopted by the present invention is that: a kind of environmental protection water purification agent comprising inorganic metal sulfate, polyacrylamide
Amine, modified aluminium sludge, the weight ratio of three are followed successively by 24-40:3-10:40-60, and the modified aluminium sludge is by aluminium sludge through dilute salt
Acid modification obtains.
Preferably, the inorganic metal sulfate is one of aluminum sulfate, ferric sulfate, calcium sulfate and magnesium sulfate or several
Kind.
Aluminum sulfate, ferric sulfate, calcium sulfate and magnesium sulfate have huge surface area, have very strong adsorption capacity, therefore
The phosphorus and other impurity in waste water can be effectively adsorbed, good flocculating effect is formed, sinking speed is fast, and strainability is good.This
Outside, sulfate is adaptable to various sewage in water treatment procedure, and the influence to pH is smaller.
Aluminium in aluminium sludge exists in the form of unformed, has gap structure abundant and biggish specific surface area,
So that its adsorption site is more, the rate of adsorption is fast, has stronger affine adsorption capacity to the anion in water.
Present inventor can remove aluminium sludge it is discovered by experiment that by aluminium sludge by Muffle furnace high-temperature calcination
In the crystallization water that contains, the specific surface area of aluminium sludge can be further increased, increase its adsorption site, changed using diluted acid salt
Property, diluted acid salt further corrode the surface of aluminium sludge, its surface are made to form the hole of many hollows, further increase adsorption potential
Point improves the rate of adsorption, to remove the heavy metal and tiny impurity in water removal well.
Preferably, the molecular weight of the polyacrylamide of selection is > 3,000,000.
Polyacrylamide (PAM) is as acrylamide (AM) monomer through the height of water-soluble linear made of free radical polymerization
Molecularly Imprinted Polymer, surface area is big, has good flocculability, and the fine suspension in water can be flocculated and wrapped up, formed
Big particle, to be conducive to settling out for suspended matter.
Preferably, the concentration of the dilute hydrochloric acid is 0.02-0.1mol/L.
Preferably, modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:25-40mL.
More specifically, modified aluminium sludge is prepared by following methods:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is subjected to high-temperature calcination, be cooled to room temperature；
3) calcined aluminium sludge is impregnated again in dilute hydrochloric acid, is stirred, be modified reaction to get dirty to modified aluminium
Mud.
Preferably, in step 1), aluminium sludge is put into Muffle furnace and carries out high-temperature calcination, the heating rate setting of Muffle furnace
For 10-15 DEG C/min,
Preferably, in step 1), the temperature of high-temperature calcination is 250-600 DEG C, and the time of high-temperature calcination is 1-5h.If forged
The temperature of burning is excessively high, the overlong time of calcining, then aluminium sludge can be by excess calcination, to some holes be blocked, in addition, excessively
Calcining can also be such that hydroxyl group decomposes, so that active site be caused to reduce, be unfavorable for improving the absorption property of aluminium sludge.
Preferably, in step 2), the speed of stirring is 100-150r/min, and the time of modified-reaction is 20-48h.
The present invention also provides the preparation methods of environmentally friendly water purification agent, comprising the following steps:
1) by inorganic metal sulfate and modified aluminium sludge ground and mixed；
2) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Preferably, in step 1), inorganic metal sulfate and modified aluminium sludge are ground to 100-120 mesh.
Inorganic metal sulfate and modified aluminium sludge are ground, metal ion and the modification of inorganic metal sulfate can be made
The hydroxide ion that contains in aluminium sludge generates metal hydroxides, such as magnesium sulfate can be with the hydrogen that contains in modified aluminium sludge
Oxygen radical ion generates magnesium hydroxide, and magnesium hydroxide also has stronger adsorptivity, and activity is good, and resiliency is good, is suitable for spent acidic
The processing of water.Therefore by after inorganic metal sulfate and the grinding of modified aluminium sludge, not only there is inorganic metal sulfate and modification
Aluminium sludge also has metal hydroxides, and the adsorptivity of water purification agent both can be improved, also improved the applicability of water purification agent, make it
Suitable for different types of wastewater treatment.
The present invention by the way that aluminium sludge modification is mixed with water purification agent with inorganic metal sulfate and polyacrylamide again, by
Increase in modified aluminium sludge specific surface area, adsorption site increases, therefore substantially increases absorption property and the suction of water purification agent
The floss particle of attached rate, formation is big, is easy to settle, and strainability is good, can be perfectly suitable at different types of waste water
Reason；In addition, greatly reducing the cost of water purification agent as raw material using aluminium sludge, the new way for making full use of aluminium sludge is developed
Diameter improves the utility value of aluminium sludge, it is made to turn waste into wealth.
Specific embodiment
In order to better explain the present invention, it is described further now in conjunction with following embodiment.
Embodiment 1
A kind of environmental protection water purification agent, the environmental protection water purification agent include inorganic metal sulfate, polyacrylamide, modified aluminium dirt
Mud, the weight ratio of three are followed successively by 24:3:40, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.
The inorganic metal sulfate is aluminum sulfate and ferric sulfate (mass ratio 1:1).
The preparation method of the environmental protection water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is put into Muffle furnace (heating rate is set as 10 DEG C/min), high temperature is forged at 250 DEG C
2h is burnt, is cooled to room temperature；
3) aluminium sludge is impregnated in dilute hydrochloric acid at 0.02mol/L, is stirred, be modified reaction 20h to get modified aluminium is arrived
Sludge, wherein modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:25mL；
4) by inorganic metal sulfate and modified aluminium sludge ground and mixed to 100-120 mesh；
5) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Embodiment 2
A kind of environmental protection water purification agent, the environmental protection water purification agent include inorganic metal sulfate, polyacrylamide, modified aluminium dirt
Mud, the weight ratio of three are followed successively by 30:6:50, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.
The inorganic metal sulfate is ferric sulfate.
The preparation method of the environmental protection water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is put into Muffle furnace (heating rate is set as 12 DEG C/min), high temperature is forged at 300 DEG C
2h is burnt, is cooled to room temperature；
3) aluminium sludge is impregnated in dilute hydrochloric acid at 0.05mol/L, is stirred, be modified reaction for 24 hours to get to modified aluminium
Sludge, wherein modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:30mL；
4) by inorganic metal sulfate and modified aluminium sludge ground and mixed to 100-120 mesh；
5) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Embodiment 3
A kind of environmental protection water purification agent, the environmental protection water purification agent include inorganic metal sulfate, polyacrylamide, modified aluminium dirt
Mud, the weight ratio of three are followed successively by 30:8:50, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.
The inorganic metal sulfate is calcium sulfate and magnesium sulfate (mass ratio 1:1).
The preparation method of the environmental protection water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is put into Muffle furnace (heating rate is set as 12 DEG C/min), high temperature is forged at 300 DEG C
2h is burnt, is cooled to room temperature；
3) aluminium sludge is impregnated in dilute hydrochloric acid at 0.05mol/L, is stirred, be modified reaction for 24 hours to get to modified aluminium
Sludge, wherein modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:30mL；
4) by inorganic metal sulfate and modified aluminium sludge ground and mixed to 100-120 mesh；
5) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Embodiment 4
A kind of environmental protection water purification agent, the environmental protection water purification agent include inorganic metal sulfate, polyacrylamide, modified aluminium dirt
Mud, the weight ratio of three are followed successively by 30:8:50, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.
The inorganic metal sulfate is calcium sulfate.
The preparation method of the environmental protection water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is put into Muffle furnace (heating rate is set as 12 DEG C/min), high temperature is forged at 300 DEG C
2h is burnt, is cooled to room temperature；
3) aluminium sludge is impregnated in dilute hydrochloric acid at 0.05mol/L, is stirred, be modified reaction for 24 hours to get to modified aluminium
Sludge, wherein modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:30mL；
4) by inorganic metal sulfate and modified aluminium sludge ground and mixed to 100-120 mesh；
5) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Embodiment 5
A kind of environmental protection water purification agent, the environmental protection water purification agent include inorganic metal sulfate, polyacrylamide, modified aluminium dirt
Mud, the weight ratio of three are followed successively by 30:8:50, and the modified aluminium sludge is obtained by aluminium sludge through dilute hydrochloric acid modification.
The inorganic metal sulfate is magnesium sulfate.
The preparation method of the environmental protection water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) dry aluminium sludge is put into Muffle furnace (heating rate is set as 12 DEG C/min), high temperature is forged at 300 DEG C
2h is burnt, is cooled to room temperature；
3) aluminium sludge is impregnated in dilute hydrochloric acid at 0.05mol/L, is stirred, be modified reaction for 24 hours to get to modified aluminium
Sludge, wherein modifying process, the quality of aluminium sludge and the volume ratio of dilute hydrochloric acid are 1g:30mL；
4) by inorganic metal sulfate and modified aluminium sludge ground and mixed to 100-120 mesh；
5) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
Comparative example 1
A kind of water purification agent, including inorganic metal sulfate, polyacrylamide, aluminium sludge, the weight ratio of three are followed successively by 30:
8:50。
The inorganic metal sulfate is calcium sulfate and magnesium sulfate (mass ratio 1:1).
The preparation method of the water purification agent, comprising the following steps:
1) sludge that will be acquired from aluminum material factory, natural air drying to moisture content about 20%, is put into vacuum oven, at 60 DEG C
Lower freeze-day with constant temperature to water content is about 2%；
2) by inorganic metal sulfate and aluminium sludge ground and mixed to 100-120 mesh；
3) polyacrylamide is added into again to be mixed to get water purification agent is arrived.
Fetch industrial wastewater from a certain printing and dyeing mill, remove some group's sundries, adjusting pH is 6-7, take a small amount of measurement COD,
Coloration, phosphorus content and content of beary metal are separated into 6 groups, every group of 2L, are separately added into the water purification agent of 1.5g embodiment 1-6 preparation,
10min is stirred under 100r/min, is stood, and supernatant is taken, measurement COD, coloration, phosphorus content and content of beary metal calculate removal rate,
Acquired results are as follows.
Claims (10)
1. it is a kind of environmental protection water purification agent, which is characterized in that it is described environmental protection water purification agent include inorganic metal sulfate, polyacrylamide,
Modified aluminium sludge, the weight ratio of three are followed successively by 24-40:3-10:40-60, and the modified aluminium sludge is by aluminium sludge through dilute hydrochloric acid
Modification obtains.
2. environmental protection water purification agent according to claim 1, which is characterized in that the inorganic metal sulfate is aluminum sulfate, sulphur
One or more of sour iron, calcium sulfate and magnesium sulfate.
3. environmental protection water purification agent according to claim 1, which is characterized in that the concentration of the dilute hydrochloric acid is 0.02-0.1mol/
L。
4. environmental protection water purification agent according to claim 1, which is characterized in that modifying process, the quality and dilute hydrochloric acid of aluminium sludge
Volume ratio be 1g:25-40mL.
5. environmental protection water purification agent according to claim 1, which is characterized in that modified aluminium sludge is prepared by following methods:
1) dry aluminium sludge is subjected to high-temperature calcination, it is cooling；
2) calcined aluminium sludge is impregnated again in dilute hydrochloric acid, is stirred, be modified reaction to get modified aluminium sludge is arrived.
6. environmental protection water purification agent according to claim 5, which is characterized in that in step 1), aluminium sludge is put into Muffle furnace
High-temperature calcination is carried out, the heating rate of Muffle furnace is set as 10-15 DEG C/min.
7. environmental protection water purification agent according to claim 5, which is characterized in that in step 1), the temperature of high-temperature calcination is 250-
600 DEG C, the time of high-temperature calcination is 1-5h.
8. environmental protection water purification agent according to claim 5, which is characterized in that in step 2), the speed of stirring is 100-150r/
Min, the time of modified-reaction are 20-48h.
9. the preparation method of environmental protection water purification agent of any of claims 1-8, which comprises the following steps:
1) by inorganic metal sulfate and modified aluminium sludge ground and mixed；
2) polyacrylamide is added into again to be mixed to get environmentally friendly water purification agent is arrived.
10. according to preparation method described in right 9, which is characterized in that in step 1), inorganic metal sulfate and modified aluminium is dirty
Mud is ground to 100-120 mesh.
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Application publication date: 20190226 |