Device and method used for cobalt source storage source well water processing

Abstract

The invention discloses a device and a method used for cobalt source storage source well water processing. The device comprises a pump, an active carbon filter, a membrane processing system, and a two-stage multi-medium mixed ion exchange column. Compared with the prior art, the advantages are that: the membrane processing system is adopted for condensation of extremely low concentration radionuclide or other ionic state impurities in well water, and an obtained concentrated solution is delivered through the two-stage multi-medium mixed ion exchange column, so that resin adsorption rate on radionuclide and impurities in unit time is accelerated, efficiency is increased, solid waste generation amount is reduced, and a problem in the prior art that only pure physical separation can be realized using the membrane processing system. Design of the distribution position of inlet water, reflux water, produced water, and concentrated water in well water is capable of realizing well water automatic circulation, and solving a problem that effective purifying of bottom precipitate is impossible to realize; and the device and the method can be both used for routine source well water purifyingand source well water pre-decommissioning fine processing, and the target of the invention is achieved.

Description

technical field [0001] The invention relates to a water treatment device and method, in particular to a device and method for cobalt source storage well water treatment. Background technique [0002] Cobalt sources are irradiation devices used to deliver high doses of radiation and are used in a wide variety of industries, including agriculture, industry and medicine. [0003] The cobalt source is usually soaked in the source well water, and the well water is usually demineralized. However, if the source well water is not regularly replaced or purified during long-term use, the impurities in the source well water will gradually increase, corroding the cobalt source, or due to cobalt The isotope leakage of the source itself may cause the radioactivity concentration of the source well water to exceed the standard, and even pollute the water source and the environment. Therefore, it is necessary to carry out normal purification and maintenance of the cobalt source well water, ...

AI Technical Summary

Problems solved by technology

[0004] Cobalt source well water usually has a low radioactivity concentration, and the conventional pure ion exchange process has a low decontamination factor. The 001*7 gel-type ion exchange resin commonly used in this type of water source in the industry is the best choice for ionic cobalt. The performance is not high, and there is almost no removal ability for colloidal / granular cobalt, the purification effect is not good, and a large amount of solid waste will be generated

However, if a membrane treatment system is used, because the process is a physical separation process, the concentrated water needs to be further treated, and the process has strict requirements on suspended solids and organic matter in the influent, so it is not suitable for direct or separate treatment of source well water

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