作　　者： ; ; ; ;

机构地区： 天津大学环境科学与工程学院

出　　处： 《环境化学》 2011年第7期1311-1315,共5页

摘　　要： 采用多级内电解反应器与混凝沉淀组合技术预处理典型合成制药废水.研究结果表明,组合技术对制药废水的COD去除率高于单一混凝技术和单一内电解技术;以PAM作为混凝剂的处理效果优于Ca(OH)2,在PAM投加浓度为10 m.gL-1,pH值为8的条件下,内电解与混凝沉淀组合技术对制药废水COD的去除率可达到30%.同时,组合技术可显著改善废水的可生化性和削减废水的生物毒性,处理后制药废水BOD5/COD从0.21提高至0.28,生物毒性由4.5 mgZn2.+L-1降低至1.8 mgZn2.+L-1. A combined internal electrolysis-coagulation technology was used to treat synthetic pharmaceutical wastewater.Results showed that the combined technology presented higher COD removal efficiency than coagulation or internal electrolysis alone.Two common flocculants were compared in this study,and PAM（polyacrylamide） demonstrated better performance than Ca（OH）2.Given 10 mg·L-1 PAM and initial wastewater pH of 8,an overall COD removal efficiency as high as 30% was achieved by the combined to technology.Furthermore,The B/C measurement and acute biotoxicity assay suggested that the combined technology remarkably improved biodegradability and reduced toxicity of the wastewater.The B/C values of the wastewater increased from 0.21 to 0.28,while the acute toxicity declined from 4.5 mgZn2＋·L-1 to 1.8 mgZn2＋·L-1 after treatment.

关 键 词： 制药废水 内电解 混凝沉淀 组合技术 生物毒性

领　　域： [环境科学与工程]