CN102964007A - Method for removing cobalt in sewage - Google Patents
Method for removing cobalt in sewage Download PDFInfo
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- CN102964007A CN102964007A CN2012105322426A CN201210532242A CN102964007A CN 102964007 A CN102964007 A CN 102964007A CN 2012105322426 A CN2012105322426 A CN 2012105322426A CN 201210532242 A CN201210532242 A CN 201210532242A CN 102964007 A CN102964007 A CN 102964007A
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- China
- Prior art keywords
- cobalt
- sewage
- waste water
- containing wastewater
- minutes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 50
- 239000010941 cobalt Substances 0.000 title claims abstract description 50
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000010865 sewage Substances 0.000 title claims abstract description 12
- 150000002500 ions Chemical class 0.000 claims abstract description 10
- 230000003311 flocculating effect Effects 0.000 claims abstract description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 3
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims abstract description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 3
- 239000002351 wastewater Substances 0.000 claims description 27
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 12
- 239000013543 active substance Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000005276 aerator Methods 0.000 claims description 7
- 239000002105 nanoparticle Substances 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000003518 caustics Substances 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 2
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 claims description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract 2
- 239000004094 surface-active agent Substances 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- SZEMGTQCPRNXEG-UHFFFAOYSA-M trimethyl(octadecyl)azanium;bromide Chemical compound [Br-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C SZEMGTQCPRNXEG-UHFFFAOYSA-M 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 150000001875 compounds Chemical group 0.000 description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- JJWSNOOGIUMOEE-UHFFFAOYSA-N Monomethylmercury Chemical compound [Hg]C JJWSNOOGIUMOEE-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000001218 blood-brain barrier Anatomy 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
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical group [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000004162 soil erosion Methods 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
Landscapes
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for removing cobalt in sewage, belonging to the field of sewage treatment in environmental protection. The method comprises the following steps: adding polyaluminum chloride, ion dispersant and surfactant into cobalt-containing sewage, flocculating, stirring, and aerating to achieve the purpose of removing cobalt, wherein the ion dispersant is one of sodium carboxymethyl cellulose and ethylene bis stearamide wax; and the surfactant is one of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, octadecyl trimethyl ammonium chloride and octadecyl trimethyl ammonium bromide. The method disclosed by the invention has the characteristics of wide raw material sources, low price, relatively low pharmaceutical dosage, low operating cost, no secondary pollution in the treatment process, high cobalt removal efficiency and high cobalt removal rate (up to 99.9% or above) the like.
Description
Technical field
The present invention relates to a kind of method of removing cobalt in the sewage, belong to field of waste water treatment in the environment protection.
Background technology
Cobalt is a kind of rareness and widely distributed, hypertoxic metallic element, exists mainly with compound form, and is very low in the abundance of occurring in nature, only is 0.75mg/kg, and its toxicity is only second to methyl mercury greater than mercury, cadmium, lead, arsenic and chromium.Cobalt and compounds of cobalt has been put into the monitoring index system of water body priority pollutants Black List and China's water environment quality standard.The concentration of cobalt is very low in the natural water body, but along with the use of cobalt is increasing, the a large amount of entered environments of Cobalt and compounds of cobalt, the cobalt that particularly enters water body by mine Weathering And Leaching, industrial wastewater discharge, atmospheric precipitation and soil erosion etc. constantly increases, and by food chain, skin contact, float cloud of dust mist and enter human body, absorbs by respiratory tract, digestive tube and skin, after entering blood, be distributed in the histoorgan of whole body, easily see through hemato encephalic barrier, serious threat HUMAN HEALTH.Therefore, the cobalt of removal tap water is very important.
At present, the treatment process of cobalt is still rare in the waste water both at home and abroad, and the domestic patent that there is no is especially processed cobalt in the tap water.The method of the processing cobalt-containing wastewater that Environmental Protection Agency is recommended mainly is the activated alumina method of purification and ion exchange method, and these two kinds of methods are processed proper, can be applied to quote and remove cobalt in the water, but the water that cost is higher and ion exchange method is processed is not suitable for directly drinking.Publication number is that CN1067229 discloses a kind of " cobalt-containing wastewater treatment process ", its technical characteristics is, cobalt-containing wastewater adds oxygenant, coprecipitator and alkali successively in sour environment, cobalt finally precipitates with the cobaltous hydroxide form, but the method chemical reagent produces secondary pollution easily, obviously is not suitable for being applied in the tap water.Publication number is that CN1715204 discloses a kind of method of utilizing pyritic ashes to process cobalt-containing wastewater, has realized the effect of the treatment of wastes with processes of wastes against one another, but has contained numerous harmful materials in the pyritic ashes, therefore also is not suitable for being applied in the tap water.
Summary of the invention
The objective of the invention is for overcoming the deficiencies in the prior art, a kind of method of removing cobalt in the sewage is provided, it is extensive that the present invention has raw material sources, cheap, the added amount of chemical less, working cost is low, the treating processes non-secondary pollution, except cobalt efficient is high, clearance can reach 99.9% with first-class characteristics.
The technical solution used in the present invention is: the present invention is by adding polymerize aluminum chloride, ion dispersion agent and tensio-active agent to containing in the cobalt sewage, thereby flocculation stirring, aeration reach the purpose of removing cobalt.
Described ion dispersion agent is a kind of in Xylo-Mucine, the ethylene bis stearic acid amide wax; Described tensio-active agent is a kind of in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, octadecyl trimethyl ammonium chloride, the Cetyltrimethylammonium bromide.
The bubble diameter of described micron-nano-sized aerator is 1～5 μ m.
Concrete operation step of the present invention is:
(1) polymerize aluminum chloride that successively adds 300ppm in cobalt-containing wastewater carries out flocculating settling;
(2) waste water after the sedimentation is 9.5～11.0 with caustic alkali adjusting pH;
(3) then successively add the tensio-active agent of 10～15ppm ion dispersion agent and 20～30ppm, stirred 15～30 minutes;
(4) micron-nano-sized aerator of then packing in cobalt-containing wastewater carries out Air Exposure, and aeration is after 30～45 minutes, and the greasy material of one deck appears in the waste water upper strata, strikes off with slag scraper to get final product.
The invention has the beneficial effects as follows:
(1) technical process is simple, and running cost is low;
(2) obvious processing effect can obtain removing the sewage of cobalt after primary treatment;
(3) treating processes non-secondary pollution, except cobalt efficient is high, clearance can reach more than 99.9%.
Embodiment
Example 1
(1) polymerize aluminum chloride that successively adds 300ppm in cobalt-containing wastewater carries out flocculating settling; (2) waste water after the sedimentation is 9.5 with caustic alkali adjusting pH; (3) then successively add the tensio-active agent of 10ppm ion dispersion agent and 20ppm, stirred 15 minutes; (4) bubble diameter of then packing in cobalt-containing wastewater is that the micron-nano-sized aerator of 1 μ m carries out Air Exposure, and aeration is after 30 minutes, and the greasy material of one deck appears in the waste water upper strata, strikes off with slag scraper to get final product.Cobalt in the waste water drops to 0.17mg/L by 171mg/L, and the cobalt clearance has reached 99.91%.
Example 2
(1) polymerize aluminum chloride that successively adds 300ppm in cobalt-containing wastewater carries out flocculating settling; (2) waste water after the sedimentation is 10.0 with caustic alkali adjusting pH; (3) then successively add the tensio-active agent of 12ppm ion dispersion agent and 25ppm, stirred 25 minutes; (4) bubble diameter of then packing in cobalt-containing wastewater is that the micron-nano-sized aerator of 3 μ m carries out Air Exposure, and aeration is after 40 minutes, and the greasy material of one deck appears in the waste water upper strata, strikes off with slag scraper to get final product.Cobalt in the waste water drops to 0.05mg/L by 98mg/L, and the cobalt clearance has reached 99.95%.
Example 3
(1) polymerize aluminum chloride that successively adds 300ppm in cobalt-containing wastewater carries out flocculating settling; (2) waste water after the sedimentation is 11.0 with caustic alkali adjusting pH; (3) then successively add the tensio-active agent of 15ppm ion dispersion agent and 30ppm, stirred 30 minutes; (4) bubble diameter of then packing in cobalt-containing wastewater is that the micron-nano-sized aerator of 5 μ m carries out Air Exposure, and aeration is after 45 minutes, and the greasy material of one deck appears in the waste water upper strata, strikes off with slag scraper to get final product.Cobalt in the waste water drops to 0.03mg/L by 69mg/L, and the cobalt clearance has reached 99.96%.
Claims (3)
1. method of removing cobalt in the sewage is characterized in that:
(1) polymerize aluminum chloride that successively adds 300ppm in cobalt-containing wastewater carries out flocculating settling;
(2) waste water after the sedimentation is 9.5～11.0 with caustic alkali adjusting pH;
(3) then successively add the tensio-active agent of 10～15ppm ion dispersion agent and 20～30ppm, stirred 15～30 minutes;
(4) micron-nano-sized aerator of then packing in cobalt-containing wastewater carries out Air Exposure, and aeration is after 30～45 minutes, and the greasy material of one deck appears in the waste water upper strata, strikes off with slag scraper to get final product.
2. described a kind of method of removing cobalt in the sewage according to claim 1 is characterized in that: described ion dispersion agent is a kind of in Xylo-Mucine, the ethylene bis stearic acid amide wax; Described tensio-active agent is a kind of in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, octadecyl trimethyl ammonium chloride, the Cetyltrimethylammonium bromide.
3. described a kind of method of removing cobalt in the sewage according to claim 1, it is characterized in that: the bubble diameter of described micron-nano-sized aerator is 1～5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105322426A CN102964007A (en) | 2012-12-11 | 2012-12-11 | Method for removing cobalt in sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105322426A CN102964007A (en) | 2012-12-11 | 2012-12-11 | Method for removing cobalt in sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102964007A true CN102964007A (en) | 2013-03-13 |
Family
ID=47794480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105322426A Pending CN102964007A (en) | 2012-12-11 | 2012-12-11 | Method for removing cobalt in sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102964007A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140169A (en) * | 2014-07-18 | 2014-11-12 | 常州大学 | Method for removing selenium ions in circuit board etching waste water |
| CN105858775A (en) * | 2016-04-04 | 2016-08-17 | 北京师范大学 | Method for efficiently absorbing cobalt in water by using iron-aluminum mud |
| CN106629776A (en) * | 2016-11-23 | 2017-05-10 | 荆门市格林美新材料有限公司 | Method for deeply removing cobalt ions in ammonium chloride solution |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU370196A1 (en) * | 1971-02-08 | 1973-02-15 | Авторы изобретени витель | METHOD FOR DECOBALTIZATION OF PRODUCTS OF HYDROFORMING OF OLEFINS |
| CN1837080A (en) * | 2005-03-21 | 2006-09-27 | 大连交通大学 | Co-condensation air flotation water purification process |
| CN101628764A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Processing method of industrial waste water generated in hydrometallurgical process of nickel, cobalt and copper |
| US20110243819A1 (en) * | 2010-04-06 | 2011-10-06 | Zinn Paul J | Metal scavenging polymers and uses thereof |
| CN103011476A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing cobalt in sewage |
-
2012
- 2012-12-11 CN CN2012105322426A patent/CN102964007A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU370196A1 (en) * | 1971-02-08 | 1973-02-15 | Авторы изобретени витель | METHOD FOR DECOBALTIZATION OF PRODUCTS OF HYDROFORMING OF OLEFINS |
| CN1837080A (en) * | 2005-03-21 | 2006-09-27 | 大连交通大学 | Co-condensation air flotation water purification process |
| CN101628764A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Processing method of industrial waste water generated in hydrometallurgical process of nickel, cobalt and copper |
| US20110243819A1 (en) * | 2010-04-06 | 2011-10-06 | Zinn Paul J | Metal scavenging polymers and uses thereof |
| CN103011476A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing cobalt in sewage |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140169A (en) * | 2014-07-18 | 2014-11-12 | 常州大学 | Method for removing selenium ions in circuit board etching waste water |
| CN105858775A (en) * | 2016-04-04 | 2016-08-17 | 北京师范大学 | Method for efficiently absorbing cobalt in water by using iron-aluminum mud |
| CN105858775B (en) * | 2016-04-04 | 2019-02-22 | 北京师范大学 | A method for efficiently adsorbing cobalt in water by using iron-aluminum mud |
| CN106629776A (en) * | 2016-11-23 | 2017-05-10 | 荆门市格林美新材料有限公司 | Method for deeply removing cobalt ions in ammonium chloride solution |
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| PB01 | Publication | ||
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Application publication date: 20130313 |