Method for degrading total sewage ammonia nitrogen and COD

• Main Authors: YAN ZEZHAO, LEI YUANJIE, YAN GUOHUA, YIN DEMU, WANG SHENGQING
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2020
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for degrading total sewage ammonia nitrogen and COD in the technical field of sewage treatment. The method comprises the following steps: step 1, pretreating a water sample: after selecting the water sample, pretreating suspended solids, metal ions such as residual chlorine, calcium, magnesium and the like, sulfides and organic matters in the water sample; and step2, performing medicament selection: selecting 40%-60% of an ammonia nitrogen removing agent and 40%-56% of a COD removing agent for preparing a diluent with a concentration of 25 mg/ml; according tothe method for degrading the total sewage ammonia nitrogen COD, standing is matched in degradation, progressive precipitation of the suspended solids is achieved, the turbidity and chroma of supernatant are obviously reduced compared with those of raw water; the two agents are matched with each other, do not interfere with each other, enhance the removal effect of ammonia nitrogen and COD, rapidlyrelease chlorine organic c