CN218333150U - Volume reduction separation device for tritium-containing wastewater - Google Patents
Volume reduction separation device for tritium-containing wastewater Download PDFInfo
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- CN218333150U CN218333150U CN202222363528.8U CN202222363528U CN218333150U CN 218333150 U CN218333150 U CN 218333150U CN 202222363528 U CN202222363528 U CN 202222363528U CN 218333150 U CN218333150 U CN 218333150U
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Abstract
The utility model discloses a contain volume reduction separator of tritium waste water, including the rectifying column group, the rectifying column group includes a plurality of grades of rectifying columns, and the purification water pitcher links to each other with the rectifying column group, and first order rectifying column is linked together with concentrated tritium ejection of compact cooler, electrolytic cell, hydrogen storage tank, hydrogen isotope adsorption and separation device, carrier gas separator intercommunication pure tritium gas collection tank and pans, pans intercommunication hydrogen storage tank and oxidation unit, and oxidation unit links to each other with the purification water pitcher. The utility model discloses in, carry out rectification separation operation through the rectification column group, can obtain the water that can discharge up to standard from last stage rectification tower top, the dense tritium water that obtains at the bottom of the first order rectification tower obtains the gas mixture of pure tritium gas and other gases through the separable purification of electrolysis, the gas mixture can carry out separation and purification many times, realize the abundant recovery of resource and recycle, operating condition is mild, can satisfy the processing requirement of the large capacity tritium-containing waste water, obtain high-purity tritium product simultaneously.
Description
Technical Field
The utility model belongs to the technical field of radioactive wastewater treatment, concretely relates to tritium-containing wastewater's separator that subtracts holds.
Background
As an important alternative option for fossil energy, nuclear power is more and more concerned and valued, and the installed capacity of a global nuclear power unit is continuously improved. Certain tritium-containing wastewater can be generated in the operation process of the nuclear power reactor, certain low-level tritium-containing wastewater can be generated in the post-treatment process of the spent fuel, the amount of the tritium-containing wastewater is large, and the specific activity of tritium is not high. Along with the improvement of the ecological environment protection consciousness of people, the country also sets up more strict discharge standards, the original overhead discharge or sea drainage mode is forbidden, the continuously generated tritium-containing wastewater has great influence on nuclear power operation and post-treatment of spent fuel, and an effective method for treating the tritium-containing wastewater is urgently needed to reduce the tritium content in the tritium-containing wastewater to the environmental protection discharge standard.
Tritium is a very important radionuclide, is not only an important raw material of a controllable nuclear fusion reactor, but also an important tracer, and has important application in the fields of medicine, biochemistry, petroleum, environmental protection, hydrology and the like. Therefore, the reasonable disposal of the tritium-containing wastewater can not only solve the problem of tritium pollution emission, but also realize the recycling of resources.
At present, the tritium separation and concentration method mainly comprises a low-temperature distillation method, a water rectification method, an electrolysis method, a thermal diffusion method, a solvent extraction method, a molecular laser method, a catalytic exchange method, a chromatography method, a process combining two or more methods and a derivative process. Among them, most of the methods, such as low temperature distillation, thermal diffusion and catalytic exchange, require conversion of raw materials into hydrogen and separation, and direct conversion of tritium-containing wastewater with low specific activity and large amount is not economical nor practical. The electrolysis method also has the problems of small treatment flux and incapability of meeting the treatment requirement of tritium-containing wastewater with large amount. Chromatography is a feasible method for enriching and separating hydrogen isotope gas, but the method cannot be used for directly enriching tritium from tritium-containing wastewater. Therefore, it is necessary to develop a method for tritium concentration and purification, which has the capability of treating large-capacity low-tritium-containing wastewater, and realizes recycling of tritium resources while solving the problem of tritium pollution emission.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem existing in the prior art, the utility model aims to provide a volume reduction and separation device for tritium-containing wastewater.
In order to realize the above purpose, reach above-mentioned technological effect, the utility model discloses a technical scheme be:
the utility model provides a contain volume reduction separator of tritium waste water, includes purification water pitcher, rectification tower group, concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption and separation device, carrier gas separator, pure tritium gas collection tank, pans and oxidation unit, the rectification tower group includes a plurality of levels of rectifying columns, is linked together between the adjacent two-stage rectifying column, purification water pitcher and rectification tower group are linked together, and the first order rectifying column of rectification tower group is linked together with concentrated tritium ejection of compact cooler, and concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption and separation device, carrier gas separator communicate pure tritium gas collection tank and pans respectively, and the pans communicates respectively has hydrogen storage tank and oxidation unit, and oxidation unit is linked together with the purification water pitcher.
And the purification water tank is communicated with a feed inlet of the rectifying tower group through the feed pump, and the feed inlet is arranged on the last rectifying tower in the rectifying tower group.
Further, still include reboiler and concentrated tritium water collection tank, be linked together with reboiler and concentrated tritium ejection of compact cooler respectively at the bottom of the first order rectification tower, concentrated tritium ejection of compact cooler is linked together with concentrated tritium water collection tank and communicates the inlet of electrolytic bath again, the liquid outlet and the concentrated tritium water collection tank of electrolytic bath are linked together.
Further, still include hydrogen pump, year gas jar, detector and gas distribution change-over valve, the hydrogen storage tank is linked together through hydrogen pump and isotope adsorption separation device's introduction port, year gas jar is linked together with isotope adsorption separation device's introduction port, isotope adsorption separation device's discharge gate and gas distribution change-over valve are linked together and communicate carrier gas separation device again, be provided with the detector between isotope adsorption separation device's discharge gate and the gas distribution change-over valve.
Further, the device also comprises an air pump, and the intermediate tank is respectively communicated with a hydrogen storage tank and an oxidation device through the air pump.
The tower top of the last-stage rectifying tower of the rectifying tower group is communicated with the tower top condenser and then communicated with the reflux tank, and the reflux tank is communicated with a reflux opening of the last-stage rectifying tower.
Furthermore, the rectifying tower group comprises n stages of rectifying towers, and n is an integer between 1 and 20.
Furthermore, the height of the rectifying tower is 1 m-50 m, and the diameter of the rectifying tower is 0.01 m-10 m.
Further, an outlet at the top of the rectifying tower of the nth-1 stage is communicated with an inlet at the bottom of the rectifying tower of the nth stage, and an outlet at the bottom of the rectifying tower of the nth stage is communicated with an inlet at the top of the rectifying tower of the nth-1 stage.
Further, the isotope adsorption separation device comprises a low-temperature elution column or a normal-temperature replacement column.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a volume reduction separator of tritium-containing waste water, including purification water pitcher, rectification tower group, concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption separation device, carrier gas separator, pure tritium gas collection tank, pans and oxidation unit, the rectification tower group includes a plurality of levels of rectifying towers, is linked together between the adjacent two-stage rectifying tower, purification water pitcher and rectification tower group are linked together, and the first order rectifying tower of rectification tower group is linked together with concentrated tritium ejection of compact cooler, and concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption separation device, carrier gas separator communicate in proper order, and carrier gas separator communicates pure tritium gas collection tank and pans respectively, and the pans communicates respectively has hydrogen storage tank and oxidation unit, and oxidation unit is linked together with the purification water pitcher. The utility model provides a volume reduction separator of tritium-containing waste water, carry out rectification separation operation through n level rectifying column, the tritium concentration that can discharge up to standard can be obtained from rectifying column group last stage's rectifying column tower top is less than emission standard's water, the dense tritium water that obtains at the bottom of the first order rectifying column tower obtains the gas mixture of pure tritium gas T2 and other gases through the separable purification of electrolysis, the gas mixture can get back to the system and carry out separation purification many times, reduce the wasting of resources, realize the recovery of resource and recycle, rectification operating condition is mild, negative pressure operation, no risk is revealed to tritium, electrolysis and adsorption separation operation flow are simple, convenient, safety and reliability, can satisfy the processing requirement of large capacity tritium-containing waste water, obtain high-purity tritium product simultaneously.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic structural diagram of embodiment 1 of the present invention.
Detailed Description
The present invention is described in detail below to enable the advantages and features of the present invention to be more easily understood by those skilled in the art, thereby making more clear and definite definitions of the scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-2, a volume reduction separator of tritium-containing waste water, the device combines water rectification, electrolysis and adsorption separation, when realizing that the volume reduction of tritium-containing waste water is carried out, carries out concentration and purification with the tritium in the waste water, obtains the tritium resource that can utilize, the device specifically includes: the system comprises a purification water tank 1, a feed pump 2, a rectification tower group, a tower top condenser 4, a reflux tank 5, a reboiler 6, a concentrated tritium discharge cooler 7, a concentrated tritium water collection tank 8, an electrolytic cell 9, a hydrogen storage tank 10, a hydrogen pump 11, a carrier gas tank 12, a hydrogen isotope adsorption separation device 13, a detector 14, a gas distribution conversion valve 15, a carrier gas separation device 16, a pure tritium gas collection tank 17, an intermediate tank 18, a gas pump 19 and an oxidation device 20, wherein the rectification tower group comprises n stages of rectification towers 3, n is an integer between 1 and 20, the adjacent two stages of rectification towers 3 are communicated with each other by adopting a water rectification technology, the purification water tank 1 is communicated with a feed port of the rectification tower group through the feed pump 2, the bottom of the first stage of the rectification tower 3 is respectively communicated with the reboiler 6 and the concentrated tritium discharge cooler 7, the top of the rectification tower 3 is communicated with the tower top condenser 4 and then communicated with the reflux tank 5, the rectification tower 3 is communicated with the reflux tank 5, the concentrated tritium discharge cooler 7 is communicated with the concentrated tritium discharge tank 8 and the electrolytic cell discharge tank 9, the hydrogen isotope adsorption tank 13 is communicated with the hydrogen separation tank 13 through the gas pump 13, the carrier gas separation device 16 is communicated with the intermediate tank 13, the hydrogen separation device 13 and the hydrogen injection device 20, and the purification water collection tank 16 are respectively communicated with the purification water collection tank 15, and the carrier gas collection tank 13, and the purification water collection tank 15, and the purification water collection tank 16.
As a specific implementation manner, the tower top outlet of the first-stage rectifying tower 3 is communicated with the tower bottom inlet of the second-stage rectifying tower 3, the tower top outlet of the second-stage rectifying tower 3 is communicated with the tower bottom inlet of the third-stage rectifying tower 3, and so on, that is, the tower top outlet of the n-1-stage rectifying tower 3 is communicated with the tower bottom inlet of the nth-stage rectifying tower 3; and the outlet at the bottom of the second-stage rectifying tower 3 is communicated with the inlet at the top of the first-stage rectifying tower 3, the outlet at the bottom of the third-stage rectifying tower 3 is communicated with the inlet at the top of the second-stage rectifying tower 3, and the like, namely the outlet at the bottom of the nth-stage rectifying tower 3 is communicated with the inlet at the top of the (n-1) th-stage rectifying tower 3.
The height of each rectifying tower 3 is 1 m-50 m, and the diameter of each rectifying tower is 0.01 m-10 m.
The utility model discloses a theory of operation does:
raw water in the purification water tank 1 is fed into a feed inlet of the rectifying tower group through a feed pump 2, the feed inlet is arranged on the last rectifying tower 3, namely the nth rectifying tower 3, in the rectifying tower group, the processing flux of the last rectifying tower 3 is the largest, the stripping mainly takes effect, namely, tritium in the raw water is mainly enriched in a liquid phase at the bottom of the last rectifying tower 3 through gas-liquid mass transfer and heat transfer exchange of the last rectifying tower 3, the content of the tritium in a gas phase coming out of the top of the last rectifying tower 3 can meet the discharge requirement, the liquid phase at the bottom of the last rectifying tower 3 enters the previous rectifying tower 3, namely the nth-1 rectifying tower 3, and is continuously concentrated and then enters the nth-2 rectifying tower 3 and the nth-3 rectifying tower 3.. . . . . And concentrating step by step until the concentration reaches the concentration required by design after entering the first-stage rectifying tower 3. Here, when the rectification separation is performed by using the rectification tower group, the liquid phase at the bottom of the nth-stage rectification tower 3 enters the nth-1-stage rectification tower 3 from the top of the nth-1-stage rectification tower 3, the gas phase at the top of the nth-1-stage rectification tower 3 enters the nth-stage rectification tower 3 from the bottom of the nth-stage rectification tower 3, and so on, the gas phase at the top of the nth-stage rectification tower 3 enters the tower top condenser 4 to be condensed, the condensate enters the reflux tank 5, 5-10% of concentrated tritium water is obtained at the bottom of the first-stage rectification tower 3, the concentrated tritium water sequentially enters the electrolytic cell 9 through the concentrated tritium discharge cooler 7 and the concentrated tritium water collection tank 8 to be electrolyzed, oxygen generated at the anode is discharged, hydrogen generated at the cathode is collected into the hydrogen storage tank 10, the gas in the hydrogen storage tank 10 enters the isotope adsorption separation device 13 through the sample inlet of the isotope adsorption separation device 13 by the hydrogen pump 11, the carrier gas in the carrier gas tank 12 enters the isotope adsorption separation device 13 through the injection port of the isotope adsorption separation device 13 at the same time, hydrogen is adsorbed and separated in the isotope adsorption separation device 13 to separate different hydrogen isotope gases, the discharge port of the isotope adsorption separation device 13 is connected with the gas distribution change-over valve 15, the gas distribution change-over valve 15 is used for switching according to the desorption time of different hydrogen isotope gases, the output gas enters the carrier gas separation device 16, the output gas comprises three gas streams of pure tritium gas T2 (the concentration reaches more than 99.5%), mixed gas I (T2, DT, D2, HT, HD) and hydrogen carrier gas mixed gas II, the tritium gas is collected in the tritium gas tank 17, the mixed gas I is collected in the intermediate tank 18, the hydrogen carrier gas mixed gas II is discharged, the mixed gas I collected in the intermediate tank 18 is rebalanced, pumping the hydrogen into a hydrogen storage tank 10 by an air pump 19, re-entering an isotope adsorption separation device 13 and a carrier gas separation device 16 for separation, and after circulating for two cycles, delivering the gas in an intermediate tank 18 into an oxidation device 20 by the air pump 19, reacting with oxygen to obtain hydrogen isotope water, and returning the hydrogen isotope water to the purified water tank 1 again;
in the rectifying tower group, each stage of rectifying tower 3 is connected with a gas phase pipe and a liquid phase pipe, tritium-containing wastewater is separated by a plurality of stages of rectifying towers 3, a gas phase leaving from the top of the last stage of rectifying tower 3 is condensed by a tower top condenser 4 connected with the gas phase, and then enters a reflux tank 5, the concentration of tritium in the condensate reaches the emission standard, so that one part of the condensate in the reflux tank 5 returns to a reflux port at the upper part of the rectifying tower 3 and flows back downwards, and the other part of the condensate is taken as a standard material to flow out.
In the liquid that flows out at the bottom of the 3 tower bottoms of first order rectifying column, tritium is concentrated, and partly liquid flows into reboiler 6, and steam returns at the bottom of this level rectifying column 3 tower after the gasification of being heated, upwards flows, and another part gets into in the concentrated tritium water pitcher 8 after the cooling of concentrated tritium ejection of compact cooler 7 and collects, and the later stage of being convenient for is sent into electrolytic cell 9 and is carried out the electrolysis.
The isotope adsorption separation apparatus 13 may use a low-temperature elution column or a normal-temperature substitution column for the separation operation.
Example 1
As shown in fig. 1-2, a volume reduction separation device for tritium-containing wastewater combines water rectification, electrolysis and adsorption separation, and concentrates and purifies tritium in wastewater while realizing volume reduction of tritium-containing wastewater to obtain available tritium resources, and specifically comprises: the device comprises a purified water tank 1, a feed pump 2, a rectifying tower group, a tower top condenser 4, a reflux tank 5, a reboiler 6, a concentrated tritium discharge cooler 7, a concentrated tritium water collection tank 8, an electrolytic cell 9, a hydrogen storage tank 10, a hydrogen pump 11, a carrier gas tank 12, a hydrogen isotope adsorption separation device 13, a detector 14, a gas distribution conversion valve 15, a carrier gas separation device 16, a pure tritium gas collection tank 17, an intermediate tank 18, an air pump 19 and an oxidation device 20, wherein the rectifying tower group comprises three-stage rectifying towers 3, adjacent two-stage rectifying towers 3 are communicated with each other, a tower top outlet of the first-stage rectifying tower 3 is communicated with a tower bottom inlet of the second-stage rectifying tower 3, a tower top outlet of the second-stage rectifying tower 3 is communicated with a tower bottom inlet of the third-stage rectifying tower 3, a tower bottom outlet of the third-stage rectifying tower 3 is communicated with a tower top inlet of the second-stage rectifying tower 3, a tower bottom outlet of the second-stage rectifying tower 3 is communicated with a tower top inlet of the first-stage rectifying tower 3, a purified water tank 1 is communicated with a feed inlet of the third-stage rectifying tower 3 of the third-stage rectifying tower, a first-stage rectifying tower 3, a tower is communicated with a tower top inlet of the concentrated tritium separation tank 6, a concentrated tritium gas injection device 13, a hydrogen isotope adsorption separation tank 7 is communicated with a concentrated tritium gas tank 10, a hydrogen storage tank 10, a hydrogen injection device 13, a reboiler 6 is communicated with a concentrated tritium gas collection tank 7, a concentrated tritium gas collection tank 7 is communicated with a concentrated tritium gas collection tank 10, a hydrogen injection device 13, a hydrogen tank 7 is communicated with a concentrated tritium gas collection tank 13, the intermediate tank 18 is respectively communicated with a hydrogen storage tank 10 and an oxidation device 20 through an air pump 19, and the oxidation device 20 is communicated with the purified water tank 1.
The height of the rectifying tower 3 is 20m, and the diameter of the rectifying tower is 0.01 m-5 m.
The working principle of the embodiment is as follows:
the water in the purified water tank 1 is sent into a feed inlet of a third-stage rectifying tower 3 of the rectifying tower group by a feed pump 2, the liquid phase at the bottom of the third-stage rectifying tower 3 enters the second-stage rectifying tower 3 from the top of the second-stage rectifying tower 3, the gas phase from the top of the previous-stage rectifying tower 3 enters the rectifying tower 3 from the bottom of the next-stage rectifying tower 3, the gas phase at the top of the second-stage rectifying tower 3 enters the third-stage rectifying tower 3 from the bottom of the third-stage rectifying tower 3, the liquid phase at the bottom of the second-stage rectifying tower 3 enters the first-stage rectifying tower 3 from the top of the first-stage rectifying tower 3, the gas phase at the top of the first-stage rectifying tower 3 enters the second-stage rectifying tower 3 from the bottom of the second-stage rectifying tower 3, the water with the tritium concentration lower than the emission standard is obtained at the top of the last-stage rectifying tower 3 and can be directly discharged, and the tritium concentrated water with the concentration of 5-10% is obtained at the bottom of the first-stage rectifying tower 3, concentrated tritium water sequentially enters an electrolytic cell 9 for electrolysis through a concentrated tritium discharge cooler 7 and a concentrated tritium water collection tank 8, oxygen generated at an anode is discharged, hydrogen generated at a cathode is collected into a hydrogen storage tank 10, gas in the hydrogen storage tank 10 is sent to a sample inlet of an isotope adsorption separation device 13 by a hydrogen pump 11, carrier gas in the carrier gas tank 12 simultaneously enters a sample inlet of the isotope adsorption separation device 13, the hydrogen is adsorbed and separated in the isotope adsorption separation device 13 to separate different hydrogen isotope gases, a discharge port of the isotope adsorption separation device 13 is connected with a gas distribution and change-over valve 15, the gas distribution and change-over valve 15 is used for switching according to desorption time of different hydrogen isotope gases, the output gas enters a carrier gas separation device 16, and the output gas comprises pure tritium gas T2 (the concentration is more than 99.5%), mixed gas I (T2, DT, D2, HT, and the like, HD) and hydrogen gas-carrier mixed gas II, wherein the tritium gas is collected in a tritium gas tank 17, the mixed gas I is collected in an intermediate tank 18, the hydrogen gas-carrier mixed gas II is discharged, the mixed gas I collected in the intermediate tank 18 is re-balanced, then the mixed gas I is pumped into a hydrogen storage tank 10 by an air pump 19 and enters an isotope adsorption separation device 13 and a carrier gas separation device 16 again for separation, after two cycles, the gas in the intermediate tank 18 is sent into an oxidation device 20 by the air pump 19 and reacts with oxygen to become hydrogen isotope water, and then the hydrogen isotope water is returned to the purified water tank 1 again;
in the rectifying tower group, each stage of rectifying tower 3 is connected with a gas phase pipe and a liquid phase pipe, tritium-containing wastewater is separated by a plurality of stages of rectifying towers 3, a gas phase leaving from the top of the last stage of rectifying tower 3 is condensed by a tower top condenser 4 connected with the gas phase, and then enters a reflux tank 5, the concentration of tritium in the condensate reaches the emission standard, so that one part of the condensate in the reflux tank 5 returns to a reflux port at the upper part of the rectifying tower 3 and flows back downwards, and the other part of the condensate is taken as a standard material to flow out. In the liquid that flows out at the bottom of the 3 tower bottoms of first order rectifying column, tritium is concentrated, and partly liquid flows into reboiler 6, and steam returns at the bottom of this level rectifying column 3 tower after the gasification of being heated, upwards flows, and another part gets into in the concentrated tritium water pitcher 8 after the cooling of concentrated tritium ejection of compact cooler 7 and collects, and the later stage of being convenient for is sent into electrolytic cell 9 and is carried out the electrolysis.
The utility model discloses not the part or the structure of concrete description adopt prior art or current product can, do not do here and describe repeatedly.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification does, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a volume reduction separator of tritium-containing waste water, its characterized in that includes purification water pitcher, rectifying tower group, concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption separation device, carrier gas separator, pure tritium gas collection tank, pans and oxidation unit, the rectifying tower group includes a plurality of levels of rectifying towers, is linked together between the adjacent two-stage rectifying tower, purification water pitcher and rectifying tower group are linked together, and the first-order rectifying tower of rectifying tower group is linked together with concentrated tritium ejection of compact cooler, electrolytic bath, hydrogen storage tank, hydrogen isotope adsorption separation device, carrier gas separator communicate in proper order, and carrier gas separator communicates pure tritium gas collection tank and pans respectively, and the pans communicates respectively has hydrogen storage tank and oxidation unit, and oxidation unit is linked together with the purification water pitcher.
2. A volume-reducing separation device for tritium-containing wastewater according to claim 1, further comprising a feed pump, wherein the purified water tank is communicated with a feed inlet of the rectifying tower group through the feed pump, and the feed inlet is arranged on the last rectifying tower in the rectifying tower group.
3. The volume-reducing separation device for tritium-containing wastewater as claimed in claim 1, further comprising a reboiler and a concentrated tritium water collection tank, wherein the bottom of the first-stage rectification tower is respectively communicated with the reboiler and a concentrated tritium discharge cooler, the concentrated tritium discharge cooler is communicated with the concentrated tritium water collection tank and then communicated with a liquid inlet of the electrolytic cell, and the liquid outlet of the electrolytic cell is communicated with the concentrated tritium water collection tank.
4. A tritium-containing wastewater volume reduction separation device according to claim 1, further comprising a hydrogen pump, a gas-carrying tank, a detector and a gas distribution change-over valve, wherein the hydrogen tank is communicated with a sample inlet of the isotope adsorption separation device through the hydrogen pump, the gas-carrying tank is communicated with a sample inlet of the isotope adsorption separation device, a discharge port of the isotope adsorption separation device is communicated with the gas distribution change-over valve and then communicated with the gas-carrying separation device, and the detector is arranged between the discharge port of the isotope adsorption separation device and the gas distribution change-over valve.
5. A volume-reducing separation device for tritiated wastewater according to claim 1, further comprising an air pump, wherein the intermediate tank is respectively communicated with the hydrogen storage tank and the oxidation device through the air pump.
6. A volume-reducing separation device for tritium-containing wastewater according to claim 1, further comprising a tower top condenser and a reflux tank, wherein the tower top of the last-stage rectifying tower of the rectifying tower group is communicated with the tower top condenser and then communicated with the reflux tank, and the reflux tank is communicated with the reflux port of the last-stage rectifying tower.
7. A volume-reducing separation device for tritiated wastewater according to claim 1, wherein the rectification column group includes n stages of rectification columns, and n is an integer between 1 and 20.
8. A volume-reducing separation device for tritium-containing wastewater according to claim 7, wherein the height of the rectifying tower is 1m to 50m, and the diameter of the rectifying tower is 0.01m to 10m.
9. A volume-reducing separation device for tritium-containing wastewater according to claim 7, wherein the outlet at the top of the n-1 th rectification column is communicated with the inlet at the bottom of the n-th rectification column, and the outlet at the bottom of the n-th rectification column is communicated with the inlet at the top of the n-1 th rectification column.
10. A volume-reducing separation device for tritiated wastewater according to claim 1, wherein the isotope adsorption separation device comprises a low-temperature elution column or a normal-temperature displacement column.
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