Method and system for pretreating bath radioactive waste liquid

• Main Authors: FENG MIN, PU YINGZHOU, WU YUYONG, ZHAO JUAN, LI XIN, MA JING, SU MINGGAO, YANG HONGZHE
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2022
• Subjects: DECONTAMINATION ARRANGEMENTS THEREFOR; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PHYSICS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL

The invention discloses a method and system for pretreating bath radioactive waste liquid, and the method comprises the following steps: 1) adjusting the pH value of the bath radioactive waste liquid to a first preset pH value, then mixing the bath radioactive waste liquid with hydrogen peroxide, and then introducing the mixture into a Fenton oxidation unit filled with a Fenton catalyst, organic matters in the bath radioactive waste liquid are oxidized and decomposed; 2) adjusting the pH value of the effluent after oxygenolysis to a second preset pH value, then carrying out flocculent precipitation, and then carrying out solid-liquid separation to obtain a supernatant; (3) carrying out ultrafiltration on the supernate to obtain ultrafiltration produced water; and 4) carrying out reverse osmosis on the ultrafiltration produced water to remove organic matters, and carrying out separation and concentration to respectively obtain reverse osmosis produced water and reverse osmosis concentrated water. The method is