水解酸化/A^2O/臭氧氧化/活性炭工艺处理精细化工废水

Fine Chemical Wastewater Treatment by Hydrolysis Acidification/A^2O/Ozone Advanced Oxidation/Activated Carbon Adsorption

针对某精细化工基地生产废水污染物浓度高、难生化降解的特点,采用水解酸化/A^2O/臭氧高级氧化/活性炭吸附/生物滤池技术处理生产废水。该组合工艺结构紧凑、技术成熟,充分保障了处理效果。在废水处理量为4 120 m^3/d,进水COD、BOD_5、氨氮、SS平均浓度分别为840、130、35.2、377 mg/L时,相应指标的总去除率分别为94.9%、93.8%、90.1%、98.4%,大部分指标去除率维持在90%以上。基地污水处理厂运行至今,出水所有指标均达到《污水综合排放标准》(GB 8978—1996)一级标准。污水处理成本为27.67元/m^3。

According to the characteristics of high content and difficult biochemical degradation of pollutants in production wastewater of a fine chemical base, the combination technology of hydrolytic a- cidification/A/O/ozone advanced oxidation/activated carbon adsorption/biological filter was adopted for the wastewater treatment. The combined process had compact structure and mature performance, and fully ensured the treatment effect. When the wastewater treatment capacity was 4 120 m3/d, the influent average concentrations of COD,BOD5, ammonia nitrogen and SS were respectively 840 mg/L, 130 mg/ L, 35.2 mg/L, 377 mg/L, the total removal efficiencies of corresponding indexes were respectively 94.9% , 93.8%, 90.1%, 98.4%, most of the indexes removal were above 90%. The wastewater treat- ment plant in this base has been in operation so far, all effluent indicators could reach the first class of Integrated Wastewater Discharge Standard （GB 8978 -1996）. The cost of sewage treatment is 27.67 yuan/m3.