CN104860439A - Movable radioactive waste liquid disposal device and method - Google Patents
Movable radioactive waste liquid disposal device and method Download PDFInfo
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- CN104860439A CN104860439A CN201510228044.4A CN201510228044A CN104860439A CN 104860439 A CN104860439 A CN 104860439A CN 201510228044 A CN201510228044 A CN 201510228044A CN 104860439 A CN104860439 A CN 104860439A
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- ion exchange
- waste liquid
- exchange column
- liquid
- flocculation
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Abstract
The invention relates to a radioactive waste liquid disposal device and method. The radioactive waste liquid disposal device comprises a flocculation filtration and absorption system and an ion exchange system connected with the flocculation filtration and absorption system. The flocculation filtration and absorption system comprises a flocculation reactor and a flocculation filter connected with a flocculation reactor. The ion exchange system comprises an ion exchange column and a precise filter connected with the ion exchange column. The radioactive waste liquid disposal method comprises the steps of firstly enabling waste liquid to perform non-full mixing reaction through the flocculation reactor to form fine and small flocculation bodies, then removing the fine and small flocculation bodies and impurities and absorbing remaining colloid through the flocculation filter, utilizing the ion exchange column to remove positive ions and negative ions in the waste liquid, finally using the precise filter to remove resin and particles carried in the waste liquid. The radioactive waste liquid disposal device and method can effectively remove a large amount of colloid-state and ion-state radioactive nuclides in the waste liquid and finally enable the waste liquid to meet the discharge requirement.
Description
Technical field
The invention belongs to field of waste liquid treatment, be specifically related to a kind of Spent Radioactive liquid processing device and treatment process, be particularly useful for the radioactive liquid waste containing multiple colloidal attitude and ionic state nucleic, the radioactive activity of nucleic is: Cs ~ 1.5 × 10
2gBq/L, Sr ~ 75GBq/L, Co ~ 3 × 10
-1gBq/L, Fe, Cr, Ag 10
-3~ 10
-2gBq/L, I ~ 1.5 × 10
3gBq/L.
Background technology
For radioactive liquid waste process, prior art is generally by mechanical filter or membrane filtration, the method combined with ion-exchange processes, in waste liquid except ionic state radionuclide, also there is the radioactive corrosion products of more colloidal attitude, simple mechanical filter is difficult to it effectively to remove, and with membrane filtration, film is easy to contaminated, results in blockage, and affects work-ing life.
Chinese Patent Application No. is " a kind of Vehicular movable type radioactive waste liquid treatment device " of 200920350039, and its technical scheme mainly comprises mechanical filter, negative resin exchange column, positive resin exchange column, negative and positive hybrid resin exchange column, detects groove, whole Transporting support etc.Stainless steel filter screen, industrial filter sand and exchange resin are equipped with in mechanical filter inside.The ion characteristic that in post, the resin of filling is removed as requested selects the type of each resin.This technical scheme is mainly mechanical filter and ion-exchange, and only adopting simple mechanical filter to filter cannot remove colloid, thus easily causes the radioactive activity of water outlet to exceed standard.
China Patent Publication No. is that CN101229949 discloses a kind of mobile radioactive liquid waste treatment equipment, and this equipment comprises protection vehicle, insulated hold, Waste Water Treatment, PLC control system.Waste Water Treatment comprises solid-liquid separator, prefilter, cartridge filter, two steps ro strainer and built-up type adsorption unit.Built-up type adsorption unit is built with absorption filter element.The main technique of this technology is that membrane filtration adds ionic adsorption.Shortcomings be when suspended substance in waste liquid or colloid concentration higher time easily make film block, affect film work-ing life and process the water yield, built-up type adsorption unit is not mentioned specific configuration also; Have accumulated a large amount of radionuclide in the dense draining of reverse osmosis, its radioactive activity is very high, adds the difficulty of subsequent disposal.
Summary of the invention
For the defect existed in prior art, the invention provides a kind of mobile radioactive liquid liquid waste treating apparatus and treatment process, effectively can remove colloidal attitudes a large amount of in waste liquid and the radionuclide of ionic state, ensure that waste liquid reaches the requirement of discharge; Method is simple, easy to operate.
For reaching above object, the technical solution used in the present invention is: provide a kind of Spent Radioactive liquid processing device, it ion exchange system comprising flocculation filtration adsorption system and be connected with described flocculation filtration adsorption system; The flocculation filtration device that described flocculation filtration adsorption system comprises flocculation reactor and is connected with described flocculation reactor; The accurate filter that described ion exchange system comprises ion exchange column and is connected with described ion exchange column.
Further, described flocculation filtration adsorption system also comprises fore filter, and described fore filter is connected with described flocculation reactor.
Further, the described flocculation filtration device activated charcoal filter that comprises mechanical filter and be connected with described mechanical filter.
Further, described ion exchange system comprises one to the Pyatyi ion exchange column connected in turn, and described one to Pyatyi ion exchange column is respectively first step ion exchange column, second stage ion exchange column, third stage ion exchange column, fourth stage ion exchange column and level V ion exchange column.
Further, the medium of described mechanical filter is respectively hard coal and quartz sand from top to bottom.
Further, the medium of described activated charcoal filter is cocoanut active charcoal.
Further, the medium of described first step ion exchange column and second stage ion exchange column is zeolite; The medium of third stage ion exchange column is positive resin; The medium of fourth stage ion exchange column and level V ion exchange column is negative and positive hybrid resin.
The present invention also provides a kind for the treatment of process of radioactive liquid waste, comprises the steps:
A, waste liquid is entered flocculation reactor hybrid reaction, form tiny flco;
B, enter flocculation filtration device from flocculation reactor waste liquid out, the flco in waste liquid and impurity are removed, and residual colloid is adsorbed;
C, enter ion exchange column from flocculation reactor waste liquid out, the positively charged ion in waste liquid and negatively charged ion are removed;
D, enter accurate filter from ion exchange column waste liquid out, resin remaining in waste liquid, particulate matter are removed.
Further, before above-mentioned steps a, waste liquid is filtered through fore filter, remove solid particulate matter larger in waste liquid.
Further, in above-mentioned steps a, described flocculation filtration device comprises mechanical filter and activated charcoal filter, and first waste liquid enters mechanical filter, removes flco and impurity; Then enter activated charcoal filter, the flco in waste liquid is removed further, and residual colloid is adsorbed.
Advantageous Effects of the present invention is:
(1) the present invention adopts the mode that flocculation filtration adsorption system and ion exchange system combine, and effectively can remove colloidal attitudes a large amount of in waste liquid and the radionuclide of ionic state, ensures that waste liquid reaches the standard of discharge;
(2) treatment unit of the present invention, reaches 105 to the comprehensive average decontamination factor of waste liquid main nucleic Cs, Sr, Co, Cr, Fe, Ag, I; Not more in new medium situation, the disposable amount of disposing waste liquid reaches 30m
3to 100m
3, process flow 3m
3/ h; Non-secondary pollution discharge in treating processes;
(3) the whole device of the present invention is arranged in a freight container, conveniently moving; When running at the scene, can remote control control;
(4) method is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of mobile radioactive liquid liquid waste treating apparatus of the present invention.
In figure:
1-flocculation filtration adsorption system 2-ion exchange system 3-fore filter
4-flocculation reactor 5-mechanical filter 6-activated charcoal filter
7-first ion exchange column 8-second ion exchange column 9-the 3rd ion exchange column
10-the 4th ion exchange column 11-the 5th ion exchange column 12-accurate filter
13-flocculation agent containing tank
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, be mobile radioactive liquid liquid waste treating apparatus of the present invention, the ion exchange system 2 that this device comprises flocculation filtration adsorption system 1 and is connected with flocculation filtration adsorption system 1.Flocculation filtration adsorption system 1 comprises the fore filter 3, flocculation reactor 4, mechanical filter 5, the activated charcoal filter 6 that connect in turn; Ion exchange system 2 comprises one to the Pyatyi ion exchange column and accurate filter 12 that connect in turn.Wherein, Pyatyi ion exchange column is respectively first step ion exchange column 7, second stage ion exchange column 8, third stage ion exchange column 9, fourth stage ion exchange column 10 and level V ion exchange column 11.
Fore filter 3 is for removing the impurity such as larger solid particulate matter in waste liquid.
Flocculation reactor 4 provides flocculation agent by flocculation agent containing tank 13, for there is insufficient reaction with waste liquid, forms tiny flco.
Mechanical filter 5 medium adopts hard coal and quartz sand, and from top to bottom, particle diameter is ascending is divided into two-stage to medium, is respectively hard coal 0.4-0.8mm, quartz sand 0.6-1.2mm, and medium floor height, than 1:1, thus, can remove flco and impurity.
Activated charcoal filter 6 medium is cocoanut active charcoal, for removing flco and impurity further, and the residual colloid of absorption simultaneously.Cocoanut active charcoal particle diameter is 20-50 order, intensity >=97%, iodine sorption value >=1000mg/g, thus, has retain very well and absorption property flco and colloid.
The medium of primary ion exchange column 7 and secondary ion exchange column 8 is zeolite, for removing the most of Cs ion in waste liquid.Sized zeolite particles is 0.4-0.8mm.Strong to Cs ion selectivity, exchange capacity is large, thermostability 750 DEG C.Cs ion builds up on zeolite, can release amount of heat, and can not affect its switching performance when concentration is higher in decay.
The medium of three grades of ion exchange columns 9 is positive resin, for removing the most of positively charged ion in waste liquid.
The medium of four ion exchange columns and Pyatyi ion exchange column is negative and positive hybrid resin, for removing negatively charged ion in waste liquid and remaining positively charged ion.The coefficient of uniformity <1.1 of resin, bed body Initial operation pressure reduction is low, resin long service life.
Accurate filter 12, for removing resin, the particulate matter of carrying secretly in waste liquid, finally makes waste water reach the requirement of discharge.
The whole device of the present invention is arranged in a freight container, conveniently moving; When running at the scene, can remote control control.
Here is mobile radioactive liquid method for treating waste liquid, comprises the following steps: waste liquid extracts enter fore filter 3 through being located at the on-the-spot water pump of process from waste liquid pool, and in waste liquid, the impurity such as larger solid particulate matter is removed; Waste liquid and flocculation agent hybrid reaction in flocculation reactor 4, forms tiny flco; Waste liquid enters mechanical filter 5, and the impurity such as the flco in waste liquid are removed; Waste liquid enters activated charcoal filter 6, and the flco in waste liquid is removed further, and residual colloid is adsorbed; Waste liquid is by I and II ion exchange column 7,8, and the Cs ion major part in waste liquid is removed; Waste liquid is by three grades of ion exchange columns 9, and the positively charged ion major part in waste liquid is removed, and waste liquid is by level Four ion exchange column 10, and the negatively charged ion in waste liquid and residue positively charged ion are removed; Waste liquid is by Pyatyi ion exchange column 11, and in waste liquid, remaining anions and canons is removed further; The resin carried secretly in waste liquid, particulate matter etc., by accurate filter 12, are removed, finally make water outlet reach emission request by waste liquid.
It should be noted that, there is insufficient reaction in waste liquid and flocculation agent, the reaction times is short in flocculation reactor, and the flco of formation is less.Wherein, flocculant concentration concentration 0.5-2ppm, line-blending flow velocity 1-1.5m/s, the hybrid reaction time is 10-20s.
Waste liquid flow velocity in activated charcoal filter 6 is 8-10m/h, and waste liquid flow is 8-16BV/h with the ratio of gac admission space; Waste liquid flow velocity in I and II ion exchange column is 8-16m/h, and waste liquid flow is 8-16BV/h with the ratio of zeolite admission space; Three, four the waste liquid flow velocity, in Pyatyi ion exchange column is 15-30m/h, and waste liquid flow is 4-40BV/h with the ratio of resin admission space.
In sum, the micelle of metallic corrosion products in waste liquid is condensed into small flco by flocculation reaction by the present invention, make it both easily by medium interception and absorption, can not block again, and the multipole ion exchange column by arranging, wherein the medium of I and II ion exchange column adopts zeolite, makes full use of it to the good selectivity of Cs exchange and thermostability, can remove the most of Cs ion in waste liquid.Result shows, the comprehensive average decontamination factor of this device to waste liquid main nucleic Cs, Sr, Co, Cr, Fe, Ag, I reaches 10
5, under not changing medium situation, the disposable amount of disposing waste liquid reaches 30m
3to 100m
3.
Mobile radioactive liquid liquid waste treating apparatus of the present invention and treatment process are not limited to above-mentioned embodiment, and those skilled in the art's technical scheme according to the present invention draws and other embodiment belongs to technological innovation scope of the present invention equally.
Claims (10)
1. a mobile radioactive liquid liquid waste treating apparatus, it ion exchange system (2) comprising flocculation filtration adsorption system (1) and be connected with described flocculation filtration adsorption system (1); It is characterized in that: the flocculation filtration device that described flocculation filtration adsorption system (1) comprises flocculation reactor (4) and is connected with described flocculation reactor (4); The accurate filter (12) that described ion exchange system (2) comprises ion exchange column and is connected with described ion exchange column.
2. mobile radioactive liquid liquid waste treating apparatus as claimed in claim 1, it is characterized in that: described flocculation filtration adsorption system (1) also comprises fore filter (3), and described fore filter (3) is connected with described flocculation reactor (4).
3. mobile radioactive liquid liquid waste treating apparatus as claimed in claim 2, is characterized in that: the activated charcoal filter (6) that described flocculation filtration device comprises mechanical filter (5) and is connected with described mechanical filter (5).
4. the mobile radioactive liquid liquid waste treating apparatus as described in any one of claim 1-3, it is characterized in that: described ion exchange system (2) comprises one to the Pyatyi ion exchange column connected in turn, described one to Pyatyi ion exchange column is respectively first step ion exchange column (7), second stage ion exchange column (8), third stage ion exchange column (9), fourth stage ion exchange column (10) and level V ion exchange column (11).
5. mobile radioactive liquid liquid waste treating apparatus as claimed in claim 3, is characterized in that: the medium of described mechanical filter (5) is respectively hard coal and quartz sand from top to bottom.
6. mobile radioactive liquid liquid waste treating apparatus as claimed in claim 3, is characterized in that: the medium of described activated charcoal filter (6) is cocoanut active charcoal.
7. mobile radioactive liquid liquid waste treating apparatus as claimed in claim 4, is characterized in that: the medium of described first step ion exchange column (7) and second stage ion exchange column (8) is zeolite; The medium of third stage ion exchange column (9) is positive resin; The medium of fourth stage ion exchange column (10) and level V ion exchange column (11) is negative and positive hybrid resin.
8. a treatment process for mobile radioactive liquid waste liquid, comprises the steps:
A, waste liquid is entered flocculation reactor hybrid reaction, form tiny flco;
B, enter flocculation filtration device from flocculation reactor waste liquid out, the flco in waste liquid and impurity are removed, and residual colloid is adsorbed;
C, enter ion exchange column from flocculation reactor waste liquid out, the positively charged ion in waste liquid and negatively charged ion are removed;
D, enter accurate filter by from ion exchange column waste liquid out, resin remaining in waste liquid, particulate matter are removed.
9. the treatment process of mobile radioactive liquid waste liquid according to claim 8, is characterized in that: before above-mentioned steps a, is filtered by waste liquid through fore filter, removes solid particulate matter larger in waste liquid.
10. the treatment process of mobile radioactive liquid waste liquid according to claim 8, is characterized in that: in above-mentioned steps a, and described flocculation filtration device comprises mechanical filter and activated charcoal filter, and first waste liquid enters mechanical filter, removes flco and impurity; Then enter activated charcoal filter, the flco in waste liquid is removed further, and residual colloid is adsorbed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228044.4A CN104860439A (en) | 2015-05-07 | 2015-05-07 | Movable radioactive waste liquid disposal device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228044.4A CN104860439A (en) | 2015-05-07 | 2015-05-07 | Movable radioactive waste liquid disposal device and method |
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| Publication Number | Publication Date |
|---|---|
| CN104860439A true CN104860439A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510228044.4A Pending CN104860439A (en) | 2015-05-07 | 2015-05-07 | Movable radioactive waste liquid disposal device and method |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347456A (en) * | 2015-09-24 | 2016-02-24 | 中国核电工程有限公司 | Neutralizer |
| CN108264032A (en) * | 2018-01-08 | 2018-07-10 | 石河子大学 | A kind of method and carbon material that the mud that flocculates is utilized to prepare carbon material with dyestuff dangerous waste |
| CN109493988A (en) * | 2018-12-14 | 2019-03-19 | 核工业理化工程研究院 | Core biochemical decontamination waste liquid pretreatment unit and processing method |
Citations (4)
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| US4501691A (en) * | 1979-12-25 | 1985-02-26 | Mitsubishi Kinzoku Kabushiki Kaisha | Process for treating a radioactive liquid waste |
| RU2095866C1 (en) * | 1994-05-18 | 1997-11-10 | Московское научно-производственное объединение "Радон" | Device for recovery of liquid radioactive wastes |
| CN201584180U (en) * | 2009-12-24 | 2010-09-15 | 中国核动力研究设计院 | Vehicular movable type radioactive waste liquid treatment device |
| CN203773964U (en) * | 2013-12-31 | 2014-08-13 | 中国核电工程有限公司 | Comprehensive waste liquid treatment system for waste treatment system of nuclear power station |
-
2015
- 2015-05-07 CN CN201510228044.4A patent/CN104860439A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501691A (en) * | 1979-12-25 | 1985-02-26 | Mitsubishi Kinzoku Kabushiki Kaisha | Process for treating a radioactive liquid waste |
| RU2095866C1 (en) * | 1994-05-18 | 1997-11-10 | Московское научно-производственное объединение "Радон" | Device for recovery of liquid radioactive wastes |
| CN201584180U (en) * | 2009-12-24 | 2010-09-15 | 中国核动力研究设计院 | Vehicular movable type radioactive waste liquid treatment device |
| CN203773964U (en) * | 2013-12-31 | 2014-08-13 | 中国核电工程有限公司 | Comprehensive waste liquid treatment system for waste treatment system of nuclear power station |
Non-Patent Citations (2)
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| 李俊雄 等: "内陆AP1000核电厂放射性废液处理系统设计改进", 《电力建设》 * |
| 李元 等: "内陆AP1000放射性废液处理工艺改进分析", 《南方能源建设》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347456A (en) * | 2015-09-24 | 2016-02-24 | 中国核电工程有限公司 | Neutralizer |
| CN108264032A (en) * | 2018-01-08 | 2018-07-10 | 石河子大学 | A kind of method and carbon material that the mud that flocculates is utilized to prepare carbon material with dyestuff dangerous waste |
| CN109493988A (en) * | 2018-12-14 | 2019-03-19 | 核工业理化工程研究院 | Core biochemical decontamination waste liquid pretreatment unit and processing method |
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Application publication date: 20150826 |