CN101665277A - Method for processing low radioactive waste liquid by continuous electrodeionization - Google Patents
Method for processing low radioactive waste liquid by continuous electrodeionization Download PDFInfo
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- CN101665277A CN101665277A CN200910093102A CN200910093102A CN101665277A CN 101665277 A CN101665277 A CN 101665277A CN 200910093102 A CN200910093102 A CN 200910093102A CN 200910093102 A CN200910093102 A CN 200910093102A CN 101665277 A CN101665277 A CN 101665277A
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- exchange resin
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- waste liquid
- radioactive waste
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- 239000007788 liquid Substances 0.000 title claims abstract description 31
- 239000002901 radioactive waste Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title claims abstract description 11
- 238000009296 electrodeionization Methods 0.000 title abstract description 3
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 239000013505 freshwater Substances 0.000 claims abstract description 43
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 35
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 23
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 12
- 150000002500 ions Chemical class 0.000 claims abstract description 11
- 238000005341 cation exchange Methods 0.000 claims abstract description 10
- 150000001450 anions Chemical class 0.000 claims abstract description 9
- 230000005684 electric field Effects 0.000 claims abstract description 9
- 239000003014 ion exchange membrane Substances 0.000 claims abstract description 5
- 230000007646 directional migration Effects 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 13
- 238000010612 desalination reaction Methods 0.000 claims description 12
- 125000002091 cationic group Chemical group 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 239000003729 cation exchange resin Substances 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005349 anion exchange Methods 0.000 claims description 8
- 125000003277 amino group Chemical group 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 5
- 125000000320 amidine group Chemical group 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 229910001428 transition metal ion Inorganic materials 0.000 abstract 1
- 239000002585 base Substances 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 14
- 238000005342 ion exchange Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000013139 quantization Methods 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002925 low-level radioactive waste Substances 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000004055 radioactive waste management Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 239000002354 radioactive wastewater Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a method for processing low radioactive waste liquid by continuous electrodeionization, which is characterized by comprising the following steps: alternately arranging an anion exchange membrane and a cation exchange membrane between a negative electrode and a positive electrode; filling ion exchange resin between the ion exchange membranes to form fresh water chambers; forming a concentrated water chamber between adjacent fresh water chambers; alternately arranging the fresh water chambers and the concentrated water chambers to form a whole membrane pile; filling 20-60 percent of alkalescence anion exchange resin, 30-50 percent of strongly acidic cation resin and 10-30 percent of strongly basic anion resin into the fresh water chambers; applying direct current voltage at both ends of the membrane pile and leading the direction of an electric field to be perpendicular to the ion exchange membranes. The low radioactive waste liquid enters into the fresh water chambers, and nuclide ions generate directional migration under the action of a direct current electric field in a resin phase and enter the concentrated water chambers by the anion exchange membrane and the cation exchange membrane. The alkalescence anion exchange resin is added into the membrane pile, and the processing efficiency is greatly improved by fully utilizing the high selectivity of theresin on transition metal ions on the premise of not changing equipment.
Description
Technical field
The present invention relates to a kind of method of utilizing continuous electric desalination to handle low radioactive waste liquid, belong to technical field of sewage.
Background technology
The nuclear disposal of three wastes is as an important component part of nuclear industry, and its status is very important, more and more is subjected to the public's common concern.The processing of low radioactive waste liquid is one of important content of the nuclear disposal of three wastes with disposing.All all activities with the radioactive material qualitative correlation of nuclear installation must be considered the operations staff and the public's health and safety and all activities influence to environment.Aprowl the refuse of Chan Shenging need store and dispose safely.The refuse small quantization is the core of radioactive waste management, limits radiocontamination deposits yields and diffusion with this, the refuse amount that reduce to store and dispose, thus reduce to the influence of environment with to the total cost of radioactive waste management.Low radioactive waste liquid amount proportion in nuclear waste is very big, and it is carried out cost-effective processing will have tangible contribution to the refuse small quantization.
Ion-exchange and evaporating and concentrating process are the common technologies that low radioactive waste liquid is handled.Possess skills advantages such as maturation, efficient height, technology be simple, easy to operate of ion exchange technique.The ion exchange resin that is used for the low radioactive waste liquid processing mostly is disposable use, does not regenerate, and the radioactive spent resin generation is big, needs further treatment and disposal, can not satisfy the requirement of radwaste small quantization fully.Evaporation concentration also is the common technology that low radioactive waste liquid is handled, and satisfies emission standard after the vapour condensation cooling, if still do not satisfy standard, then enters ion exchange system, and its disadvantage is that energy consumption is too high.
Continuous electric desalination (CEDI, Continuous Electrodeionization) technology is the membrane technology that recent development is got up.This technology is ion exchange resin to be filled in form the CEDI unit between the anion and cation exchange membrane, anion-exchange membrane and cationic exchange membrane are alternately arranged, ion in the water by resin absorption after, under the effect of volts DS, be removed by anion and cation exchange membrane respectively.Water molecules is decomposed into hydrogen ion and hydroxide ion under effect of electric field, ion exchange resin is carried out cyclic regeneration, makes resin keep optimum Working.Utilize continuous electric desalination (CEDI) technical finesse low radioactive waste liquid, great advantage is: 1) resin cyclic regeneration automatically under volts DS, need not to add soda acid, and "dead" in theory spent resin produces; 2) to the requirement of energy consumption well below evaporation concentration method.
With the CEDI technology is that the embrane method ultrapure water production technique of core has become the first-selected technology that ultrapure water is produced in present electric power, electronics, pharmacy, the biotechnology field.But with modern novel C EDI technical finesse low level waste water, international research is just at the early-stage, reports lessly, belongs to international perspective study direction.
The resin of filling in the CEDI membrane stack is divided into two big classes: storng-acid cation exchange resin is to remove nucleic ionic major portion; Strongly basic anion exchange resin mainly plays electrobalance and pH poising action, to nucleic ionic removal effect seldom.Storng-acid cation exchange resin and strongly basic anion exchange resin are filled in the freshwater room of CEDI membrane stack with segmentation or blended mode.
But existing C EDI technology all to remove strong and weak electricity medium in the water, to make high-quality ultrapure water as target, handle by the low radioactive waste liquid that can't directly apply to nuclear industry.In low radioactive waste liquid, nucleic ionic concentration is often than low 4-5 the order of magnitude of conventional on-radiation ionic concentration, and storng-acid cation exchange resin does not have very strong selectivity for cationic absorption in the water, therefore causes the poor selectivity of CEDI technology for the nucleic ion remaval.Directly use existing C EDI technology in the low radioactive waste liquid of nuclear industry is handled, have the problem of the following aspects: it is not high that the nucleic ionic is removed efficient, and the water quality of fresh water water outlet can not meet the demands; The electric current overwhelming majority is used for water on-radiation ionic to be removed, and the watt current utilization ratio is low, the energy consumption height.
Summary of the invention
Handle the problem that low level waste water exists at existing continuous electric desalination, the objective of the invention is to improve the efficient that continuous electric desalination is handled low radioactive waste liquid by the method for improving membrane stack freshwater room internal resin proportioning.
The objective of the invention is to realize by the following technical solutions: a kind of method of utilizing continuous electric desalination to handle low radioactive waste liquid is characterized in that this method comprises the steps:
1) anion-exchange membrane and cationic exchange membrane are arranged alternately between negative electrode and the anode, fill anionite-exchange resin and Zeo-karb between anion-exchange membrane and the cationic exchange membrane, form a processing unit, form freshwater room between the anion and cation exchange membrane in each unit, anion-exchange membrane is always near anodal in each freshwater room, and cationic exchange membrane forms dense hydroecium always near negative pole between the adjacent freshwater room, freshwater room and dense hydroecium are alternately arranged, and constitute whole membrane stack;
2) in freshwater room, fill three kinds of ion exchange resin: weak base anion-exchange resin, strongly basic anion exchange resin and storng-acid cation exchange resin;
3) apply volts DS at the membrane stack two ends, direction of an electric field is vertical with ion-exchange membrane, low radioactive waste liquid enters in the freshwater room, the nucleic ion is at first adsorbed by ion exchange resin, under the effect of DC electric field, directional migration takes place at ion exchange resin in nucleic ion mutually that be adsorbed, enters dense hydroecium by anion and cation exchange membrane and discharges.
Technical characterictic of the present invention also is, three kinds of shared volume percent of ion exchange resin of filling in the freshwater room described step 2) are respectively: weak base anion-exchange resin accounts for 20%-60%, storng-acid cation exchange resin accounts for 30%-50%, and strongly basic anion exchange resin accounts for 10%-30%.
The weak base anion-exchange resin of filling in the freshwater room step 2 of the present invention), the ratio that its quaternary amine functional group accounts for amidine functional group is 0～20%.
The weak base anion-exchange resin of filling in the freshwater room step 2 of the present invention), before being filled into freshwater room, adopt following step to carry out pre-treatment: first hydrochloric acid or sulfuric acid drip washing with 0.1～1.0mol/L, hydrochloric acid or vitriolic volume are 2-10 times of handled ion exchange resin volume, sodium hydroxide solution with equivalent makes the transition again, the volume of sodium hydroxide solution is 2-10 a times of handled ion exchange resin volume, at last with excessive deionized water flushing.
The present invention compares with existing CEDI technology, have the following advantages and the high-lighting effect: different with traditional ion-exchange idea, the weak base anion-exchange resin that this proposed is that a kind of weak solution is from property coordination multipolymer, active group is contained in functional group on the skeleton side chain, has the characteristic of electron donor(ED); Part trace level activity nucleic ion, particularly radioactive corrosion products perhaps has the sky electronic orbit in the water, perhaps can pass through valence shell or the close electronic orbit hydridization of energy, has the characteristic of electron acceptor(EA).Therefore, weak base anion-exchange resin shows having the special selectivity of radionuclide ionic of transition metal feature, and this character is that strongly basic anion exchange resin is not available.Simultaneously, weak base anion-exchange resin can play electrobalance and the effect of pH equilibrated in membrane stack.
In the membrane stack freshwater room, add the weak base anion-exchange resin thing, be actually in keeping original membrane stack in the anionite-exchange resin electrobalance and pH poising action, make this part resin possess the radionuclide of removal ionic function, particularly remove radionuclide ion with transition metal feature.Under the prerequisite of structure that does not change equipment and stability, increased substantially the removal efficient of whole membrane stack, thereby made the CEDI technology have more specific aim and suitability for the processing of radioactive wastewater to low radioactive waste liquid.Compare with original CEDI, the new membrane stack that has added weak base anion-exchange resin can improve 1-2 more than the order of magnitude on removal efficient.
Embodiment
A kind of method of utilizing continuous electric desalination to handle low radioactive waste liquid provided by the invention, its concrete processing step is as follows:
1) anion-exchange membrane and cationic exchange membrane are arranged alternately between negative electrode and the anode, fill anionite-exchange resin and Zeo-karb between anion-exchange membrane and the cationic exchange membrane, form a processing unit, form freshwater room between the anion and cation exchange membrane in each unit, anion-exchange membrane is always near anodal in each freshwater room, and cationic exchange membrane forms dense hydroecium always near negative pole between the adjacent freshwater room, freshwater room and dense hydroecium are alternately arranged, and constitute whole membrane stack;
2) in freshwater room, fill three kinds of ion exchange resin: weak base anion-exchange resin, strongly basic anion exchange resin and storng-acid cation exchange resin; Three kinds of shared volume percent of ion exchange resin are respectively: weak base anion-exchange resin accounts for 20%-60%, storng-acid cation exchange resin accounts for 30%-50%, strongly basic anion exchange resin accounts for 10%-30%, the weak base anion-exchange resin of Tian Chonging wherein, it is 0～20% that its quaternary amine functional group accounts for the amidine functional group ratio.
Weak base anion-exchange resin should be earlier before being packed into freshwater room with hydrochloric acid or the sulfuric acid drip washing of 0.1～1.0mol/L, hydrochloric acid or vitriolic volume are 2-10 times of handled ion exchange resin volume, sodium hydroxide solution with equivalent makes the transition again, the volume of sodium hydroxide solution is 2-10 a times of handled ion exchange resin volume, at last with excessive deionized water flushing
3) apply volts DS at the membrane stack two ends, direction of an electric field is vertical with ion-exchange membrane, low radioactive waste liquid enters in the freshwater room, the nucleic ion is at first adsorbed by ion exchange resin, under the effect of DC electric field, directional migration takes place at ion exchange resin in nucleic ion mutually that be adsorbed, enters dense hydroecium by anion and cation exchange membrane and discharges.
Enumerate several specific embodiments below, understand the present invention with further:
Embodiment 1:
Utilize described method to handle the low radioactive waste liquid that contains Co, the volume content of weak base anion-exchange resin is 60% in the freshwater room of CEDI membrane stack, do not contain quaternary amine functional group, before being packed into freshwater room, use the abundant drip washing of hydrochloric acid of 1.0mol/L earlier, sodium hydroxide solution with equivalent makes the transition again, the volume of acid ﹠ alkali liquid is 2 times of handled weak base anion-exchange resin amount, washes with deionized water at last.When the concentration of Co was at 100 μ g/L in membrane stack is intake, the concentration of Co was lower than 2ng/L in the water outlet, removed efficient and was higher than 99.998%.
Embodiment 2:
Utilize described method to handle the low radioactive waste liquid that contains Co, Cs, Sr, the volume content of weak base anion-exchange resin is 20% in the freshwater room of CEDI membrane stack, do not contain quaternary amine functional group, before being packed into freshwater room, use the abundant drip washing of hydrochloric acid of 0.1mol/L earlier, sodium hydroxide solution with equivalent makes the transition again, the volume of acid ﹠ alkali liquid is 10 times of handled weak base anion-exchange resin amount, washes with deionized water at last.The volume content of the freshwater room middle strong acidity Zeo-karb of CEDI membrane stack is 50%, and the volume content of strongly basic anion exchange resin is 30%.When the concentration of Co, Cs, Sr was at 10 μ g/L in membrane stack is intake, the Co in the water outlet, Cs, Sr concentration were lower than 2ng/L, 1ng/L and 5ng/L respectively, removed efficient and were higher than 99.98%, 99.99% and 99.95% respectively.
Embodiment 3:
Utilize described method to handle the low radioactive waste liquid that contains Co, Cs, Sr, the volume content of weak base anion-exchange resin is 30% in the freshwater room of CEDI membrane stack, contain 20% quaternary amine functional group, before being packed into freshwater room, use the abundant drip washing of sulfuric acid of 0.25mol/L earlier, sodium hydroxide solution with equivalent makes the transition again, the volume of acid ﹠ alkali liquid is 5 times of the ion exchange resin amount of handling, washes with deionized water at last.The volume content of the freshwater room middle strong acidity Zeo-karb of CEDI membrane stack is 50%, and the volume content of strongly basic anion exchange resin is 20%.When the concentration of Co, Cs, Sr was at 10 μ g/L in membrane stack is intake, Co, Cs, Sr concentration all were lower than 10ng/L in the water outlet, removed efficient all more than 99.9%.
Claims (4)
1. a method of utilizing continuous electric desalination to handle low radioactive waste liquid is characterized in that this method comprises the steps:
1) anion-exchange membrane and cationic exchange membrane are arranged alternately between negative electrode and the anode, fill anionite-exchange resin and Zeo-karb between anion-exchange membrane and the cationic exchange membrane, form a processing unit, form freshwater room between the anion and cation exchange membrane in each unit, anion-exchange membrane is always near anodal in each freshwater room, and cationic exchange membrane forms dense hydroecium always near negative pole between the adjacent freshwater room, freshwater room and dense hydroecium are alternately arranged, and constitute whole membrane stack;
2) in freshwater room, fill three kinds of ion exchange resin: weak base anion-exchange resin, strongly basic anion exchange resin and storng-acid cation exchange resin;
3) apply volts DS at the membrane stack two ends, direction of an electric field is vertical with ion-exchange membrane, low radioactive waste liquid enters in the freshwater room, the nucleic ion is at first adsorbed by ion exchange resin, under the effect of DC electric field, directional migration takes place at ion exchange resin in nucleic ion mutually that be adsorbed, enters dense hydroecium by anion and cation exchange membrane and discharges.
2. according to the described method of utilizing continuous electric desalination to handle low radioactive waste liquid of claim 1, it is characterized in that, three kinds of shared volume percent of ion exchange resin of filling in the freshwater room are respectively: weak base anion-exchange resin accounts for 20%-60%, storng-acid cation exchange resin accounts for 30%-50%, and strongly basic anion exchange resin accounts for 10%-30%.
3. according to claim 1 or the 2 described methods of utilizing continuous electric desalination to handle low radioactive waste liquid, it is characterized in that, the weak base anion-exchange resin of in freshwater room, filling, it is 0～20% that its quaternary amine functional group accounts for the amidine functional group ratio.
4. according to the described method of utilizing continuous electric desalination to handle low radioactive waste liquid of claim 1, it is characterized in that, weak base anion-exchange resin is first hydrochloric acid or sulfuric acid drip washing with 0.1～1.0mol/L before being packed into freshwater room, hydrochloric acid or vitriolic volume are 2-10 times of handled ion exchange resin volume, sodium hydroxide solution with equivalent makes the transition again, the volume of sodium hydroxide solution is 2-10 a times of handled ion exchange resin volume, at last with excessive deionized water flushing.
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| CN2009100931021A CN101665277B (en) | 2009-09-18 | 2009-09-18 | Method for processing low radioactive waste liquid by continuous electrodeionization |
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| CN2009100931021A CN101665277B (en) | 2009-09-18 | 2009-09-18 | Method for processing low radioactive waste liquid by continuous electrodeionization |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976454A (en) * | 2012-10-29 | 2013-03-20 | 中国科学院过程工程研究所 | Method for separating cations of NH4<+> and Mg<2+> with same electric properties in fermentation wasterwater by using packed bed electrodialyzer |
| CN103177784A (en) * | 2013-03-28 | 2013-06-26 | 清华大学 | Method for treating radioactive wastewater |
| CN105427912A (en) * | 2015-11-03 | 2016-03-23 | 上海核工程研究设计院 | Method for separating boron and radionuclides in radioactive wastewater |
| CN105762394A (en) * | 2016-03-22 | 2016-07-13 | 清华大学 | Microbial desalination cell provided with filtering type negative pole and application of microbial desalination cell |
| CN106630353A (en) * | 2016-12-28 | 2017-05-10 | 中海油能源发展股份有限公司珠海冷能利用分公司 | Method and device for preparing supplied water of ship boiler by seawater |
| US10083769B2 (en) | 2013-10-24 | 2018-09-25 | Kurita Water Industries Ltd. | Treatment method and treatment apparatus of iron-group metal ion-containing liquid, method and apparatus for electrodepositing Co and Fe, and decontamination method and decontamination apparatus of radioactive waste ion exchange resin |
| CN109592756A (en) * | 2018-12-28 | 2019-04-09 | 中国科学院青岛生物能源与过程研究所 | A kind of polymer overmold film that NdFeB permanent magnets are excellent and its preparation and the application in electrodialysis recycling concentrating waste acid |
| CN113398761A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Membrane, membrane stack, device and method |
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| CN101060021A (en) * | 2007-04-13 | 2007-10-24 | 清华大学 | A method for thickening the low level radioactive wastewater |
| CN101051534A (en) * | 2007-04-27 | 2007-10-10 | 清华大学 | Method for treating water containing low radioactivity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102976454A (en) * | 2012-10-29 | 2013-03-20 | 中国科学院过程工程研究所 | Method for separating cations of NH4<+> and Mg<2+> with same electric properties in fermentation wasterwater by using packed bed electrodialyzer |
| CN102976454B (en) * | 2012-10-29 | 2014-06-04 | 中国科学院过程工程研究所 | Method for separating cations of NH4<+> and Mg<2+> with same electric properties in fermentation wasterwater by using packed bed electrodialyzer |
| CN103177784A (en) * | 2013-03-28 | 2013-06-26 | 清华大学 | Method for treating radioactive wastewater |
| WO2014153974A1 (en) * | 2013-03-28 | 2014-10-02 | 清华大学 | Radioactive wastewater treating method |
| CN103177784B (en) * | 2013-03-28 | 2015-06-03 | 清华大学 | Method for treating radioactive wastewater |
| US10046987B2 (en) | 2013-03-28 | 2018-08-14 | Tsinghua University | Method of treatment of radioactive wastewater |
| US10083769B2 (en) | 2013-10-24 | 2018-09-25 | Kurita Water Industries Ltd. | Treatment method and treatment apparatus of iron-group metal ion-containing liquid, method and apparatus for electrodepositing Co and Fe, and decontamination method and decontamination apparatus of radioactive waste ion exchange resin |
| CN105427912A (en) * | 2015-11-03 | 2016-03-23 | 上海核工程研究设计院 | Method for separating boron and radionuclides in radioactive wastewater |
| CN105762394A (en) * | 2016-03-22 | 2016-07-13 | 清华大学 | Microbial desalination cell provided with filtering type negative pole and application of microbial desalination cell |
| CN106630353A (en) * | 2016-12-28 | 2017-05-10 | 中海油能源发展股份有限公司珠海冷能利用分公司 | Method and device for preparing supplied water of ship boiler by seawater |
| CN109592756A (en) * | 2018-12-28 | 2019-04-09 | 中国科学院青岛生物能源与过程研究所 | A kind of polymer overmold film that NdFeB permanent magnets are excellent and its preparation and the application in electrodialysis recycling concentrating waste acid |
| CN113398761A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Membrane, membrane stack, device and method |
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| CN101665277B (en) | 2011-07-20 |
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