采用臭氧基高级氧化法处理难生化降解的餐厨沼液生化段出水。考察了废水处理的pH、氧气流量、反应器气压和H₂O₂投加量等对餐厨沼液降解效果的影响。结果表明,随着pH的升高、反应器气压和H₂O₂投加量的增加,出水COD降低;在pH为7.8、氧气流量为1 L/min、H₂O₂投加量为2 mL时餐厨沼液降解效果最好,出水COD可降低到19.7 mg/L,其COD去除率为84.31%,达到《城镇污水处理厂水污染物排放标准》(DB 11/890—2012)一级A标准(COD≤50 mg/L)。

An ozone-based advanced oxidation process is taken to treat with the refractory effluent that comes from a kitchen anaerobic digestion membrane bioreactor (MBR) and is difficult to be degraded by bio route.The influences of pH value,oxygen flow rate,reactor pressure,and H₂O₂ dosage on the treatment effect of the refractory effluent are investigated.Experimental results show that the content of COD (chemical oxygen demand) in treated effluent decreases with increasing pH value,reactor pressure,and H₂O₂ dosage.The best treatment performance is achieved when pH is 7.8,oxygen flow rate is 1 L·min^-1,and H₂O₂ dosage is 2 mL.COD content in effluent reduces to 19.7 mg·L^-1 and the removal rate of COD reaches 84.31%.This treatment result meets the Class A standard (COD≤50 mg COD) of China's "Discharge Standards of Pollutants for Municipal Wastewater Treatment Plants" (DB 11/890—2012).

李明慧(1998-),女,硕士生,研究方向为高级氧化法处理工业废水,924516743@qq.com;李海松(1980-),男,博士,教授,研究方向为市政污水深度脱氮,通讯联系人,lhs@zzu.edu.cn。