CN108217895A - A kind of method of efficient process arsenic-containing waste water - Google Patents
A kind of method of efficient process arsenic-containing waste water Download PDFInfo
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- CN108217895A CN108217895A CN201810175657.XA CN201810175657A CN108217895A CN 108217895 A CN108217895 A CN 108217895A CN 201810175657 A CN201810175657 A CN 201810175657A CN 108217895 A CN108217895 A CN 108217895A
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- arsenic
- waste water
- containing waste
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- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 96
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000002351 wastewater Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 title claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 40
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 26
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 23
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 19
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 2
- FGIWMSAVEQNPPQ-UHFFFAOYSA-N arsenic;hydrate Chemical compound O.[As] FGIWMSAVEQNPPQ-UHFFFAOYSA-N 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011575 calcium Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001914 filtration Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910000358 iron sulfate Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 201000009030 Carcinoma Diseases 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 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
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of methods of efficient process arsenic-containing waste water, are as follows：1) arsenic ion concentration in arsenic-containing waste water is tested；2) CaCO is added in simultaneously into arsenic-containing waste water3And FeSO4, wherein CaCO3、FeSO4Molar ratio with As elements in arsenic-containing waste water is 1.5~3.5：1.5~5：1, and arsenic-containing waste water is stirred makes its reaction, it precipitates, filter after reaction.The method of the present invention simple process, treatment effeciency are up to more than 99.80%, arsenic content in waste water can be reduced to by requirements of the national standard discharge for the arsenic-containing waste water of high concentration or low concentration, and medicine component is simple used in this method, with preferable economic value, it also is able to the secondary pollution problem that general dearsenicating method is avoided to bring, it is environmental-friendly, there is wide prospects for commercial application.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of method of efficient process arsenic-containing waste water.
Background technology
Arsenic (As) is widely distributed in nature, is a kind of odorless tasteless, nonmetalloid for easily aoxidizing.Arsenic mainly with
The form of compound is present in natural environment.The organic and inorganic compound of arsenic has different degrees of toxicity, harm to the human body
It is very big, if the high arsenic water of human body long-term drinking, arsenic can be accumulated and slow poisoning caused to lead to cutaneum carcinoma and internal organs in vivo
Canceration etc..Since arsenic is to the potential hazard of human body, the Center for Disease Control (CDC) and international cancer research institution (IARC) will
It is determined as the first carcinogen.With the hair in the fields such as mining, chemical industry, chemical pharmacy, pesticide producing, weaving, glass, process hides
Exhibition, a large amount of arsenic-containing waste water are entered in water environment, the safety and health of serious threat human ecological system, therefore arsenic-containing waste water
Effectively improvement it is very urgent, develop high-efficiency and economic arsenic-containing waste water treatment technology have great society, economy and environment meaning
Justice.
The method of country's processing arsenic-containing waste water has chemical precipitation method, absorption method, ion-exchange, membrane separation process and microorganism
Method etc. using dearsenicating method is generally at present chemical precipitation method in industrial production, usually using Ca (OH)2With molysite such as trichlorine
Change iron or ferrous sulfate is added in arsenic-containing waste water, the arsenic in water is made to precipitate.Three in waste water are handled in this way
It needs addition strong oxidizer that trivalent arsenic is oxidized to pentavalent arsenic such as hydrogen peroxide during valency arsenic and carries out subsequent wastewater treatment again, and
Need to be pre-adjusted the pH value in arsenic-containing waste water, as Ca (OH)2Quick release goes out OH after addition-Lead to the Fe (OH) of generation3Crystallization
It reduces its activity and then considerably reduces the removal efficiency of arsenic.Meanwhile need to consume a large amount of medicaments during traditional handicraft, it generates
A large amount of waste residues secondary pollution is caused to environment.
Invention content
The technical problems to be solved by the invention are for above-mentioned deficiency in the prior art, provide a kind of efficiently place
The method for managing arsenic-containing waste water, it is simple for process, it does not need to adjust pH value, only adds in calcium carbonate and iron sulfate precipitation arsenic, do not need to
The additives such as any precipitating reagent, oxidant are added in, dosing is few, at low cost, and sludge quantity is small.
In order to solve the above technical problems, technical solution provided by the invention is：
A kind of method of efficient process arsenic-containing waste water is provided, is as follows：
1) arsenic ion concentration in arsenic-containing waste water is tested；
2) CaCO is added in simultaneously into arsenic-containing waste water3And FeSO4, wherein CaCO3、FeSO4With As elements in arsenic-containing waste water
Molar ratio is 1.5~3.5：1.5~5：1, and arsenic-containing waste water is stirred makes its reaction at normal temperatures, it sinks after reaction
It forms sediment, filtering.
Preferably, CaCO in step 2)3、FeSO4Molar ratio with As elements in arsenic-containing waste water is 1.5~3：2~5：1,
When arsenic ion is As (III) wherein in arsenic-containing waste water, FeSO4：As molar ratios are 2.5~5：1, arsenic ion is As in arsenic-containing waste water
(V) when, FeSO4：As molar ratios are 2~4：1.The present invention using calcium carbonate slow release in water OH-With ferrous sulfate in sky
Can trivalent arsenic be gradually oxidized to pentavalent arsenic under gas existence condition.
Preferably, step 2) mixing speed is 500~900rpm.
Preferably, when arsenic ion is As (III) in step 2) arsenic-containing waste water, the reaction time is 5~12h；Arsenic-containing waste water
When middle arsenic ion is As (V), the reaction time is 3~8h.
Preferably, the step 2) sedimentation time is 1~3.5h.
Calcium carbonate of the present invention is added in arsenic-containing waste water occurs hydrolysis generation HCO first3 -And OH-.With calcium carbonate table
The OH in face-It is constantly consumed, HCO3 -With the H in water+CO is released in reaction2Gas, under stirring, the Fe in solution2+With
CaCO3Particle frequent impact, constantly and OH-With reference to generation Fe (OH)2, Fe (OH) under the action of air2It aoxidizes rapidly,
Generate the Fe (OH) of nascent state3Cotton-shaped colloidal precipitation utilizes nascent state Fe (OH)3Super-active and arsenic coagulation co-precipitation occurs.
The method of the present invention utilizes CaCO3Slowly release OH-The characteristics of promote Fe2+It is rapidly converted into Fe3+, while air and water oxygen
In the presence of causing generated Fe (OH)3For amorphous state colloidal form, (Ca (OH) is added in conventional method2Quick release goes out OH afterwards-
Lead to the Fe (OH) of generation3γ-the FeOOH of crystalline state easily occur) compared to more high activity, and then arsenic is greatly improved
Removal efficiency.
The beneficial effects of the present invention are：The method of the present invention simple process, treatment effeciency may be up to 99.86%, for height
Arsenic content in waste water can be reduced to requirements of the national standard discharge (at the method for the present invention by the arsenic-containing waste water of concentration or low concentration
Reason arsenic-containing waste water can realize that the minimum discharge of arsenic is 0.035mg/L, existing less than China《Integrated wastewater discharge standard》Index
Middle total arsenic content is the standard of 0.5mg/L), and medicine component is simple used in this method, has preferable economic value, moreover it is possible to
The secondary pollution problem that general dearsenicating method is brought enough is avoided, it is environmental-friendly, there is wide prospects for commercial application.
Description of the drawings
Fig. 1 is adds CaCO respectively in comparative example 1-2 of the present invention and embodiment 13、FeSO4And FeSO4+CaCO3To arsenic
When m- removal rate test chart.
Specific embodiment
For those skilled in the art is made to more fully understand technical scheme of the present invention, the present invention is made below in conjunction with the accompanying drawings into
One step is described in detail.
The arsenic containing solution that the present invention is implemented using arsenic initial concentration as 50mg/L simulates arsenic-containing waste water, and (embodiment 1 and 3 contains pentavalent
Arsenic ion, 2 arsenic ion containing trivalent of embodiment).
Embodiment 1
A kind of method of efficient process arsenic-containing waste water, is as follows：
1) FeSO is added in simultaneously into arsenic-containing waste water4And CaCO3, wherein CaCO3：As molar ratios are 1.5：1；FeSO4：As
Molar ratio is 2：1；
2) it is sufficiently stirred under room temperature, stirring intensity 500rmp, mixing time 4 hours；
3) precipitation filtering, takes supernatant to chemically examine, the residual concentration of the arsenic in waste water after above-mentioned process is
It is existing to meet China by 0.071mg/L《Integrated wastewater discharge standard》Index (it is required that total arsenic content is below 0.5mg/L), arsenic
Removal rate be 99.86%.
Comparative example 1
Arsenic-containing waste water is handled using method similar to Example 1, the difference lies in：In step 1) into arsenic-containing waste water
Only add in CaCO3, CaCO3It is 1.5 with As molar ratios in arsenic-containing waste water：1.
After tested, the residual concentration of this comparative example treated arsenic in waste water is 48.63mg/L, and the removal rate of arsenic is
0.85%.
Comparative example 2
Arsenic-containing waste water is handled using method similar to Example 1, the difference lies in：In step 1) into arsenic-containing waste water
Only add in FeSO4, FeSO4It is 2 with As molar ratios in arsenic-containing waste water：1.
After tested, the residual concentration of this comparative example treated arsenic in waste water is 24.60mg/L, and the removal rate of arsenic is
49.33%.
As shown in Figure 1 to add CaCO respectively in comparative example 1-2 and embodiment 13、FeSO4And FeSO4+CaCO3To arsenic
When m- removal rate test chart, as can be seen from Figure 1, be individually added into calcium carbonate and arsenic removal do not acted on, be individually added into molysite to removing
Arsenic have certain effect but reaction speed quickly (1h tends towards stability), and removal rate is 50% or so, and embodiment 1 is by calcium carbonate and sulphur
The removal rate of arsenic significantly improves in the case of sour ferrous addition simultaneously, tends towards stability in 3h, removal rate is higher than 99.5%.
Comparative example 3
Arsenic-containing waste water is handled using method similar to Example 1, the difference lies in：In step 1) into arsenic-containing waste water
Add in Ca (OH)2And FeSO4, wherein Ca (OH)2：As molar ratios are 1.5：1；FeSO4：As molar ratios are 2：1.
After tested, the residual concentration of this comparative example treated arsenic in waste water is 0.75mg/L, and the removal rate of arsenic is
97.63%.Comparative example 3 and embodiment 1 add FeSO respectively under the conditions of identical additive amount4+CaCO3And FeSO4+Ca(OH)2,
Removal rate and residual concentration data comparison to arsenic is it will be evident that embodiment 1 adds in carbonic acid under identical Ca/Fe molar ratios
For calcium compared with comparative example 3 adds in calcium hydroxide, the removal ability of arsenic improves 2 percentage points.Meanwhile the arsenic after the two reaction is residual
Remaining concentration has large change, and sample residual concentration is only that 0.071mg/L compares residual concentration as 0.75mg/L after adding in calcium carbonate
The residual concentration of calcium hydroxide sample its arsenic reduce 9.5%.
Embodiment 2
A kind of method of efficient process arsenic-containing waste water, is as follows：
1) FeSO is added in simultaneously into arsenic-containing waste water4And CaCO3, wherein CaCO3：As molar ratios are 2：1；FeSO4：As rubs
You are than being 3：1；
2) it is sufficiently stirred under room temperature, stirring intensity 700rmp, mixing time 6 hours；
3) precipitation filtering, takes supernatant to chemically examine, the residual concentration of the arsenic in waste water after above-mentioned process is
0.279mg/L。
Embodiment 3
A kind of method of efficient process arsenic-containing waste water, is as follows：
1) FeSO is added in simultaneously into arsenic-containing waste water4And CaCO3, wherein CaCO3：As molar ratios are 2.5：1；FeSO4：As
Molar ratio is 2.5：1；
2) it is sufficiently stirred under room temperature, stirring intensity 600rmp, mixing time 3 hours；
3) precipitation filtering, takes supernatant to chemically examine, the residual concentration of the arsenic in waste water after above-mentioned process is
0.164mg/L。
Claims (5)
- A kind of 1. method of efficient process arsenic-containing waste water, which is characterized in that be as follows：1) arsenic ion concentration in arsenic-containing waste water is tested；2) CaCO is added in simultaneously into arsenic-containing waste water3And FeSO4, wherein CaCO3、FeSO4With mole of As elements in arsenic-containing waste water Than being 1.5~3.5：1.5~5：1, and arsenic-containing waste water is stirred makes its reaction at normal temperatures, precipitation, mistake after reaction Filter.
- 2. according to the method described in claim 1, it is characterized in that, CaCO in step 2)3、FeSO4With As elements in arsenic-containing waste water Molar ratio be 1.5~3：2~5：1, when arsenic ion is As (III) wherein in arsenic-containing waste water, FeSO4：As molar ratios for 2.5~ 5：1, when arsenic ion is As (V) in arsenic-containing waste water, FeSO4：As molar ratios are 2~4：1.
- 3. according to the method described in claim 1, it is characterized in that, step 2) mixing speed is 500~900rpm.
- 4. according to the method described in claim 1, it is characterized in that, in step 2) arsenic-containing waste water arsenic ion be As (III) when, instead It is 5~12h between seasonable；When arsenic ion is As (V) in arsenic-containing waste water, the reaction time is 3~8h.
- 5. according to the method described in claim 1, it is characterized in that, the step 2) sedimentation time is 1~3.5h.
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| CN201810175657.XA CN108217895B (en) | 2018-03-02 | 2018-03-02 | Method for efficiently treating arsenic-containing wastewater |
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| CN201810175657.XA CN108217895B (en) | 2018-03-02 | 2018-03-02 | Method for efficiently treating arsenic-containing wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108485A (en) * | 2020-08-25 | 2020-12-22 | 锡矿山闪星锑业有限责任公司 | Harmless treatment method of arsenate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843961A (en) * | 2006-05-19 | 2006-10-11 | 北京工业大学 | Composite dephosphorizing coagulant dedicated for drinking water |
| CN101475252A (en) * | 2008-11-28 | 2009-07-08 | 浙江大学 | Integrated method for processing arsenic-containing wastewater by using iron composite bentonite |
| CN102557222A (en) * | 2012-02-15 | 2012-07-11 | 天津理工大学 | Method for removing trace arsenic from aqueous solution |
| CN102765831A (en) * | 2012-07-25 | 2012-11-07 | 中南大学 | Purification method of wastewater containing heavy metal and arsenic |
| CN105417767A (en) * | 2015-11-12 | 2016-03-23 | 中南民族大学 | Method for removing arsenic from sulfate acidic wastewater |
| CN105645643A (en) * | 2016-03-24 | 2016-06-08 | 海安县中丽化工材料有限公司 | Phosphorus-containing sewage treatment method |
-
2018
- 2018-03-02 CN CN201810175657.XA patent/CN108217895B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843961A (en) * | 2006-05-19 | 2006-10-11 | 北京工业大学 | Composite dephosphorizing coagulant dedicated for drinking water |
| CN101475252A (en) * | 2008-11-28 | 2009-07-08 | 浙江大学 | Integrated method for processing arsenic-containing wastewater by using iron composite bentonite |
| CN102557222A (en) * | 2012-02-15 | 2012-07-11 | 天津理工大学 | Method for removing trace arsenic from aqueous solution |
| CN102765831A (en) * | 2012-07-25 | 2012-11-07 | 中南大学 | Purification method of wastewater containing heavy metal and arsenic |
| CN105417767A (en) * | 2015-11-12 | 2016-03-23 | 中南民族大学 | Method for removing arsenic from sulfate acidic wastewater |
| CN105645643A (en) * | 2016-03-24 | 2016-06-08 | 海安县中丽化工材料有限公司 | Phosphorus-containing sewage treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108485A (en) * | 2020-08-25 | 2020-12-22 | 锡矿山闪星锑业有限责任公司 | Harmless treatment method of arsenate |
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