水解酸化-EGSB-生物接触氧化组合工艺处理制药废水

Treatment of Pharmaceutical Wastewater by a Combined Process of Hydrolytic Acidification,EGSB and Biological Contact Oxidation

采用水解酸化-EGSB-生物接触氧化组合工艺处理中药类制药废水,介绍了工艺选择的依据、工艺流程、工艺参数及运行效果。工程实践表明,该工艺处理效率高,抗冲击负荷能力强,对COD、BOD_5、SS、NH_3-N的去除率分别达到98.4%、99.5%、98.1%、92.7%,最终出水COD、BOD_5、SS、NH_3-N分别为81、9.1、19.2、7.3 mg/L,达到《中药类制药工业水污染物排放标准》(GB21906—2008)。

A combined process of hydrolytic acidification, EGSB and biological contact oxidation was applied to treat pharmaceutical wastewater of traditional Chinese medicine. Its process selection base, process flow, technological parameters, and running effect were introduced. The running results showed that the combined process had high treatment efficiency and strong resistance to shock loading. The removal rates of COD, BODs, SS, and NH3 - N reached 98.4%, 99.5%, 98.1% and 92.7% re- spectively. The effluent quality were 81 mg/L, 9.1 mg/L, 19.2 mg/L and 7.3 mg/L respectively, which could meet the Discharge Standard of Water Pollutants for Pharmaceutical Industry Chinese Tradi- tional Medicine Category （ GB 21906 - 2008 ）.