臭氧基高级氧化法深度处理餐厨沼液的研究  

Deep treatment of anaerobic digestion effluent of kitchen by ozone⁃based advanced oxidation process

作　　者：李明慧[1] 田敏慧 阎登科 陈晓蕾 李海松[1] LI Ming-hui;TIAN Min-hui;YAN Deng-ke;CHEN Xiao-lei;LI Hai-song(School of Ecology and Environment,Zhengzhou University,Zhengzhou 450000,China;Zhihe Environmental Protection Technology Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]郑州大学生态与环境学院,河南郑州450000 [2]知和环保科技有限公司,河南郑州450000

出　　处：《现代化工》2024年第4期197-203,共7页Modern Chemical Industry

摘　　要：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H_(2)O_(2)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H_(2)O_(2)投加量的增加,出水COD降低;在pH为7.8、氧气流量为1 L/min、H_(2)O_(2)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).

关 键 词：餐厨沼液 深度处理 O_(3)/H_(2)O_(2) 催化臭氧氧化 

分 类 号：X703[环境科学与工程—环境工程]