混凝-氧化法预处理原料药废水

采用混凝-Fenton试剂氧化或混凝-臭氧氧化两种氧化技术预处理上海某医药集团原料药废水。实验结果表明：采用聚合氯化铝（PAC）和聚丙烯酰胺（PAM）复合混凝处理该废水，在混凝pH为9.5、混凝时间1h、PAC和PAM加入量分别为600mg/L和12mg/L时，COD的去除率可达23%；混凝后废水再分别用臭氧氧化和Fenton试剂氧化处理，臭氧氧化明显比Fenton试剂氧化经济有效，在臭氧氧化pH为10、臭氧加入量为15g/L、臭氧氧化时间为1h的条件下，废水COD去除率为27.8%，废水BOD₅/COD明显提高，为后续生化处理提供了良好的条件。

Pretreatment of Material Drug Wastewater by Coagulation-Ozonation Process

The material drug wastewater from Shanghai medicine Co. was pretreated separately by coagulation - ozonation and coagulation - Fenton reagent oxidation. The experimental results show that：When the wastewater is coagulated by poly aluminium chloride (PAC) and polyacrylamide (PAM),the COD removal rate can reach 23% under the conditions of coagulation pH 9.5,coagulation time 1 h,PAC dosage 600 mg/L and PAM dosage 12 mg/L；When the coagulated wastewater is treated separately by ozonation and Fenton reagent oxidation,the ozonation process is more economical and effective than Fenton reagent oxidation process；When the ozonation pH is 10,the ozone dosage is 15 g/L and the ozonation time is 1 h,the COD removal rate can reach 27.8%,and the BOD₅/COD can be increased significantly,which can provide a good condition for further bio-treatment.