Device for treating organic waste liquid in spherical nuclear fuel element production line

Abstract

The invention belongs to the technical field of high-temperature gas cooled reactor nuclear fuel element production, and particularly relates to a device for treating organic waste liquid in a spherical nuclear fuel element production line. The device comprises a waste liquid storage tank, a waste liquid supply system which is connected with the inlet of the waste liquid storage tank, an ammonia distillation recovery system, a flocculation filtration system and an activated carbon adsorption system, wherein the ammonia distillation recovery system, the flocculation filtration system and the activated carbon adsorption system are connected with the outlet of the waste liquid storage tank. Firstly, ammonia distillation is carried out on the waste liquid containing the organic matter, the waste gas is leached by a falling film absorption tower, and the obtained ammonia water absorption liquid can be repeatedly used in other processes; a flocculating agent is added into the waste liquid after ammonia distillation; and the filtrate obtained after sedimentation and filtration is adsorbed by activated carbon, the organic matters in the filtrate are removed, the content of uranium in the filtrate is reduced, and the waste liquid capable of meeting the requirement of silica gel adsorption is obtained. The device effectively solves the problem that the silica gel column cannot normally adsorb the waste liquid due to high pH value, high uranium content and high organic matter content of the waste liquid.

Description

technical field [0001] The invention belongs to the technical field of production of high-temperature gas-cooled reactor nuclear fuel elements, and in particular relates to a treatment device for waste liquid containing organic matter in a spherical nuclear fuel element production line. Background technique [0002] The traditional process of preparing ammonium diuranate from uranyl nitrate directly uses ammonia water for precipitation, and the resulting waste liquid can be directly adsorbed on silica gel after filtration. High temperature gas-cooled reactor demonstration project fuel element at UO 2 In the preparation process of the core, organic substances such as urea, polyvinyl alcohol and tetrahydrofurfuryl alcohol must be introduced into the glue cooking and compounding process, and waste liquid containing the above organic substances will be generated during the aging and washing processes. The pH of the waste liquid is generally at 12 or more, and the uranium concen...

AI Technical Summary

Problems solved by technology

In the process of industrial production, as the production progresses, the use of special containers to store waste liquid cannot meet the increasing waste liquid, and a large amount of waste liquid accumulated will force production to be interrupted

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