A treatment system for reuse of radioactive waste liquid in nuclear power plants

Abstract

The invention provides a treatment system for nuclear power plant radioactive waste liquid reuse. The treatment system comprises a technological drainage treatment sub-system, a chemical and ground drainage treatment sub-system and a service drainage treatment sub-system. The technological drainage treatment sub-system comprises a technological drainage collection unit, a technological drainage evaporation unit, a technological drainage ion exchange unit and a monitoring tank which are connected in series successively. The chemical and ground drainage treatment sub-system comprises a chemical drainage collection unit and a ground drainage collection unit and further comprises a chemical and ground drainage evaporation unit, a chemical and ground drainage ion exchange unit and a chemical and ground drainage reuse tank which are connected with the downstream sides of the chemical drainage collection unit and the ground drainage connection unit in series successively. The service drainage treatment sub-system comprises an ozone and ultraviolet light treatment unit, a precision treatment unit and a service drainage reuse tank, which are connected in series successively. The treatment system can realize drainage of treated waste liquid with higher tritium concentration of nuclear power plants and reuse of treated liquid waste having a lower tritium concentration or basically containing no tritium.

Description

technical field [0001] The invention belongs to the technical field of waste liquid treatment, and in particular relates to a treatment system for reuse of radioactive waste liquid in nuclear power plants. Background technique [0002] In order to solve the increasingly serious energy problem, on the premise of ensuring safety and reliability, relevant state departments are steadily promoting the planning and site selection of inland nuclear power plants. Compared with coastal nuclear power plants, inland nuclear power plants are prone to shortage of available water resources. The nuclear power plant radioactive waste liquid treatment system is used to treat the radioactive waste liquid produced in the control area of ​​the nuclear power plant. The existing engineering treatment technology can process most of the radioactive substances in the radioactive waste liquid produced by the operation of the nuclear power plant, but it is difficult to remove tritium. Therefore, by ...

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Problems solved by technology

[0003] The technical solution disclosed in the Chinese patent application "Nuclear Power Plant Radioactive Waste Liquid Treatment System" (application number 201310065960, published on June 5, 2013) does not consider the reuse of radioactive waste liquid after treatment

The technical solution disclosed in the Chinese patent application "Processing Method and Device for Radioactive Waste Liquid" (Application No. 200880106696, published on August 4, 2010) mainly uses electrodialysis technology, which is significantly different from the technical solution adopted in the present invention

The technical solution disclosed in the Chinese patent application "A Nuclear Power Plant Laundry Wastewater Treatment Device" (Application No. 201420190471, published on December 17, 2014) uses the method of increasing ultraviolet light irradiation on the basis of the traditional Fenton oxidation method to treat laundry Wastewater, which is different from the ozone and ultraviolet light treatment methods used in the present invention, and this patent is only for the treatment of laundry wastewater and does not consider reuse

The technical solution disclosed in the Chinese patent application "A Method for Treating Radioactive Wastewater" (Application No. 201310103374, published on June 26, 2013) mainly uses the reverse osmosis process to treat radioactive wastewater, which is different from the technical solution adopted in the present invention obvious

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