Processing method of tail gas leacheate produced by UF6

A treatment method and eluent technology, which is applied in the field of uranium conversion, can solve problems such as poor uranium removal effect, metal uranium concentration that cannot meet the discharge standard, and difficulty in reaching the maximum allowable limit for wastewater discharge, so as to reduce competitive adsorption and improve The effect of adsorption efficiency
CN106927539AActive Publication Date: 2017-07-07THE 404 CO LTD CHINA NAT NUCLEAR
10 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
THE 404 CO LTD CHINA NAT NUCLEAR
Publication Date
2017-07-07
Patent Text Reader

Abstract

The invention belongs to the technical field of uranium conversion, and particularly relates to a processing method of tail gas leacheate produced by UF6. The processing method includes steps of selecting waste water generated from tail gas spraying process of the UF6 technique as a processing object; preparing 15-20% of sodium hydroxide solution by mass for neutralizing bicarbonate radical ion in the technical waste water, and making it transform to be carbanion, and reducing the competitive absorption of HCO3- to the metal uranium; adding the prepared sodium hydroxide solution in the technical waste water tank, and stirring the solution evenly by pressure air; pumping the prepared alkali uranium-bearing liquid waste to the filter by a centrifugal pump driven by magnetic force to filter and remove suspended particle impurities; pressing the waste liquid to an ion exchange pillar by compression air to absorb; filling strong basicity anion exchange resin to the ion exchange pillar; after the absorption and saturation of the ion exchange resin, using the mixed solution of 2 mol / L sodium chloride and 5% of sodium carbonate as desorption agent to desorb the ion exchange resin; settling the desorption liquid by solid sodium hydroxide, and recycling the metal uranium therein.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of uranium conversion, in particular to a UF 6 A treatment method for the eluent of the production tail gas. Background technique

[0002] At present, domestic and foreign to UF 6 There are two main treatment measures for alkaline uranium-containing waste liquid generated in the production process: one is to use ion exchange method for exchange adsorption treatment. The second is to use Ca(OH) 2 Alkalization, FeSO 4 Neutralization and final addition of precipitating agent are used for treatment, and the waste water can be discharged up to the standard after treatment. From the uranium conversion process itself, UO 2 Preparation of UF by hydrofluorination 4 Technology and UF 4 Fluorination to prepare UF 6 The technology is already at the leading level in China, but there is still a big gap between the indicators such as the three wastes discharge and the advanced uranium conversion production plants a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More