臭氧氧化—曝气生物滤池处理含高浓度硝基苯类化合物废水

Treatment of Wastewater Containing High-concentration Nitrobenzene Compounds by Ozone Oxidation-Biological Aerated Filter Process

采用臭氧氧化—曝气生物滤池联用处理实际生产中排放的含硝基苯类化合物废水。实验结果表明:臭氧氧化过程可破坏硝基苯类化合物的苯环结构,显著提高有机物的可生物降解性;单独采用臭氧氧化法,在臭氧氧化柱进水pH为9、臭氧加入量为200m g/L的条件下,硝基苯类化合物的去除率可达98%;采用臭氧氧化—曝气生物滤池联用处理含高浓度硝基苯类化合物废水,COD去除率可达80%以上,处理后废水COD稳定在50m g/L以下。

The wastewater containing high-concentration nitrobenzene compounds was treated by ozone oxidation - biological aerated filter process. The experimental results show that： Ozone oxidation can destroy benzene ring and improve the biodegradability of nitrobenzene compounds remarkably; Using ozone oxidation process, the removal rate of nitrobenzene compounds is 98% under the conditions of influent pH 9 and ozone dosage 200 rag/L; Using ozone oxidation - biological aerated filter process, the COD removal rate is over 80% and the COD of the treated wastewater is below 50 mg/L.