Method for treating salt-containing unsymmetrical dimethylhydrazine production wastewater

The invention relates to the field of unsymmetrical dimethylhydrazine wastewater treatment, and discloses a method for treating high-salt-content unsymmetrical dimethylhydrazine production wastewater, which comprises the following steps: (1) adjusting the pH value of the salt-containing unsymmetrical dimethylhydrazine production wastewater and the concentration of a homogeneous catalyst, so that the adjusted wastewater is acidic, and the concentration of metal ions of the homogeneous catalyst is more than or equal to 50mg/L; (2) mixing the adjusted wastewater with hydrogen peroxide for catalytic oxidation; (3) adsorbing the oxidation liquid subjected to catalytic oxidation by using resin to recover the homogeneous catalyst; and (4) denitrifying the permeate liquid adsorbed by the resin. 本发明涉及偏二甲肼废水处理领域，公开了一种处理高含盐偏二甲肼生产废水的方法，其中，该方法包括：(1)将含盐偏二甲肼生产废水进行pH及均相催化剂浓度调节，使得调节后的废水呈酸性且均相催化剂金属离子的浓度≥50mg/L；(2)将调节后的废水与过氧化氢混合进行催化氧化；(3)经催化氧化后的氧化液采用树脂吸附回收均相催化剂；(4)将树脂吸附的透过液进行脱氮。