CN101891271A - Method of using diatomite to pretreat radioactive waste water - Google Patents
Method of using diatomite to pretreat radioactive waste water Download PDFInfo
- Publication number
- CN101891271A CN101891271A CN 201010198276 CN201010198276A CN101891271A CN 101891271 A CN101891271 A CN 101891271A CN 201010198276 CN201010198276 CN 201010198276 CN 201010198276 A CN201010198276 A CN 201010198276A CN 101891271 A CN101891271 A CN 101891271A
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- China
- Prior art keywords
- diatomite
- wastewater
- waste water
- radioactive wastewater
- radioactive
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- 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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Links
- 239000002354 radioactive wastewater Substances 0.000 title claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002351 wastewater Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 239000012528 membrane Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 2
- 238000009287 sand filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method of using diatomite to pretreat radioactive wastewater and the method belongs to the field of wastewater treatment process. The method comprises the following steps: adding a mixture of activated carbon and diatomite in a weight ratio of 1:2-4 in radioactive wastewater, wherein the weight percentage of the mixture to radioactive wastewater is 0.3%-1%; stirring for 1-3 hours, and using a diatomite filter to filter radioactive wastewater, thus removing suspended particles and radionuclides in the wastewater. In the method, activated carbon and diatomite are added in radioactive wastewater to absorb radionuclides in the wastewater, thus the running time of the diatomite filtration system doubles; and the removal rate of radionuclides in the wastewater is up to more than 20%.
Description
Technical field
The invention belongs to the waste water treatment process field, be specifically related to a kind of method of utilizing diatomite to pretreat radioactive waste water.
Background technology
Can produce a certain amount of radioactive wastewater in operation such as Nuclear power plants, nuclear installation and radio chemistry laboratory and production process, such radioactive wastewater contains pollution substances such as suspended particle, radioactive metal ion usually.Membrane technology is effective ways of handling radioactive wastewater, but pre-treatment is the radioactive wastewater film handle can long-time running key.
The radioactive wastewater pre-treatment can be adopted methods such as sand filtration, micro-filtration, but the low water outlet of sand filtration filtering accuracy can not be satisfied the requirement of film processing system, and micro-filtration exists filter membrane to stop up the defective of the frequent recoil of needs easily.
Kieselguhr filter can be realized fine filtering by the coating of diatomite on filter cloth, has big, the stable advantage of flux, and by the renewal of overlay film realization filter membrane again, is that the ideal of radioactive wastewater pretreatment technology is selected.
Kieselguhr filter is widely used in the control of swimming pool water, and kieselguhr filter recoils up to stopping up the back at the back continuous service of filming with diatomite in conventional wastewater treatment.Radioactive wastewater is because waste water contains micro-content organism pollutent water quality complexity usually, there was the as easy as rolling off a log obstruction of filter membrane in the technology of direct filtration after use was filmed, need frequent demoulding, be not generally 1 hour if in former water, do not add the cycle of operation that diatomite and gac single film, simultaneously to the clearance of radionuclide less than 5%.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing diatomite to pretreat radioactive waste water.
A kind of method of utilizing diatomite to pretreat radioactive waste water, specific as follows: with mass ratio is that 1: 2～4 gac and diatomaceous mixture are added in the radioactive wastewater, wherein, the mass percent of mixture and radioactive wastewater is 0.3%～1%, stir after 1～3 hour, with radioactive wastewater through kieselguhr filter, thereby remove suspended particle and radionuclide in the waste water.
Described gac and diatomaceous mass ratio are preferably 1: 3.
Total β concentration of described radioactive wastewater is 100～10000Bq/L.
The pH value of pending radioactive wastewater is 5～9.
Described kieselguhr filter is commercially available kieselguhr filter.
Beneficial effect of the present invention: this method by in radioactive wastewater, add gac, diatomite adsorbs the radionuclide in the waste water, filter total suspended particulate in the removal waste water through kieselguhr filter, make prolong one times the working time of kieselguhr filter, the clearance of radionuclide reaches more than 20% in the waste water simultaneously.
Embodiment
Following examples be respectively under different conditions to containing Sr, nucleic such as Cs and Co, total β activity are the pre-treatment of the radioactive wastewater of 3000Bq/L, pH 7.5.
Embodiment 1
Gac and the diatomite mass ratio by 1: 2 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 3 ‰ mass ratio, stir after 2 hours to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 25% in above processed waste water, and single cycle of operation of filming is 5 hours.
Embodiment 2
Gac and the diatomite mass ratio by 1: 2 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 1% mass ratio, stir after 2 hours to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 27% in above processed waste water.Single cycle of operation of filming is 4 hours.
Embodiment 3
Gac and the diatomite mass ratio by 1: 3 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 5 ‰ mass ratio, stir after 3 hours to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 26% in above processed waste water.Single cycle of operation of filming is about 6 hours.
Embodiment 4
Gac and the diatomite mass ratio by 1: 3 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 1% mass ratio, stir after 2 hours to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 30% in above processed waste water.Single cycle of operation of filming is about 6 hours.
Embodiment 5
Gac and the diatomite mass ratio by 1: 4 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 3 ‰ mass ratio, stir after 2 hours to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 20% in above processed waste water.Single cycle of operation of filming is about 6 hours.
Embodiment 6
Gac and the diatomite mass ratio by 1: 4 is mixed, then mixture is added in the above-mentioned radioactive wastewater with 1% mass ratio, stir after 1 hour to filter and remove the mixture that is added in the waste water through kieselguhr filter.The clearance of radionuclide is about 31% in above processed waste water.Single cycle of operation of filming is about 5 hours.
Claims (3)
1. method of utilizing diatomite to pretreat radioactive waste water, it is characterized in that, with mass ratio is that 1: 2～4 gac and diatomaceous mixture are added in the radioactive wastewater, wherein, the mass percent of mixture and radioactive wastewater is 0.3%～1%, stir after 1～3 hour, with radioactive wastewater through kieselguhr filter, thereby remove suspended particle and radionuclide in the waste water.
2. the pretreatment process of radioactive wastewater according to claim 1 is characterized in that, gac and diatomaceous mass ratio are 1: 3.
3. the pretreatment process of radioactive wastewater according to claim 1 is characterized in that, total β concentration of described radioactive wastewater is 100～10000Bq/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010198276 CN101891271A (en) | 2010-06-04 | 2010-06-04 | Method of using diatomite to pretreat radioactive waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010198276 CN101891271A (en) | 2010-06-04 | 2010-06-04 | Method of using diatomite to pretreat radioactive waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101891271A true CN101891271A (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010198276 Pending CN101891271A (en) | 2010-06-04 | 2010-06-04 | Method of using diatomite to pretreat radioactive waste water |
Country Status (1)
| Country | Link |
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| CN (1) | CN101891271A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183394A (en) * | 2011-12-31 | 2013-07-03 | 中国石油化工股份有限公司 | Method for treating wastewater through absorption method |
| CN103508509A (en) * | 2013-08-14 | 2014-01-15 | 宁波瑞曼特新材料有限公司 | Method for removing silver, cobalt, and strontium nuclide ions in radioactive waste water |
| CN109856667A (en) * | 2017-11-30 | 2019-06-07 | 中国辐射防护研究院 | A method of measurement radionuclide distribution coefficient in the surface water-suspended matter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09251094A (en) * | 1996-03-15 | 1997-09-22 | Hitachi Ltd | Method and device for treating radioactive liquid waste |
| CN1281525C (en) * | 2004-05-25 | 2006-10-25 | 侯立安 | Method for treatment of radioactive waste water and system therefor |
| CN101628222A (en) * | 2009-08-20 | 2010-01-20 | 蒋永锋 | Filtering medium for removing micro radioactive substances in water and preparation method thereof |
-
2010
- 2010-06-04 CN CN 201010198276 patent/CN101891271A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09251094A (en) * | 1996-03-15 | 1997-09-22 | Hitachi Ltd | Method and device for treating radioactive liquid waste |
| CN1281525C (en) * | 2004-05-25 | 2006-10-25 | 侯立安 | Method for treatment of radioactive waste water and system therefor |
| CN101628222A (en) * | 2009-08-20 | 2010-01-20 | 蒋永锋 | Filtering medium for removing micro radioactive substances in water and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《中国公共卫生》 19961231 李涤等 活性炭清除水中铀污染的效果观察 1－3 第12卷, 第5期 2 * |
| 《海洋环境科学》 19830930 陈进兴 低水平放射性废液的处理 1－3 第2卷, 第3期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183394A (en) * | 2011-12-31 | 2013-07-03 | 中国石油化工股份有限公司 | Method for treating wastewater through absorption method |
| CN103508509A (en) * | 2013-08-14 | 2014-01-15 | 宁波瑞曼特新材料有限公司 | Method for removing silver, cobalt, and strontium nuclide ions in radioactive waste water |
| CN109856667A (en) * | 2017-11-30 | 2019-06-07 | 中国辐射防护研究院 | A method of measurement radionuclide distribution coefficient in the surface water-suspended matter |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
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Open date: 20101124 |