多晶硅微粉加工生产废水处理工艺改进的应用研究  

Study on process modification for polycrystalline silicon powder processing wastewater treatment

作　　者：陈琪[1] 李孟[1] 张斌[1,2] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]湖北中碧环保科技有限公司,孝感432000

出　　处：《给水排水》2017年第2期75-78,共4页Water & Wastewater Engineering

摘　　要：氨氮浓度高、氟含量高、可生化性差、废水成分复杂是多晶硅微粉加工废水的水质特点,也是治理的难点。研发设计了一套高效物理-化学法组合新工艺,并在郑州某微粉有限公司进行了实践。设计废水处理量为2 000m^3/d,进水COD为8 000mg/L、BOD5为700mg/L,氟化物为1 000mg/L,通过调整各个构筑物的工艺设计参数,使得出水水质达到《污水综合排放标准》(GB 8978-1996)二级标准且处理效果稳定。High concentration of ammonia nitrogen, high fluoride content, poor biodegradabili- ty, and complex wastewater composition are the characteristics of the wastewater from the produc- tion of polycrystalline silicon powder, which leads to the difficulty inits treatment. We developed and designed a new treatment technology with combined physical and chemical methods, and tested it at a factory in Zhengzhou city. The volume of design wastewater was 2 000 m^3/d, the influent COD, BODs and fluoride concentrations were 8 000 mg/L, 700 mg/L and 1 000 mg/L respectively. By adjusting the operational parameters of each treatment unit, the effluent quality met the second- ary standard of the Integrated Wastewater Discharge Standard （GB 8978--1996） and the treat- ment performance was stable.

关 键 词：多晶硅微粉加工废水 超效浅层气浮 厌氧 生物接触氧化 

分 类 号：X703[环境科学与工程—环境工程]