高氨氮管件生产废水处理工艺研究  

Research on the treatment of wastewater from the production of high-ammonia/nitrogen pipe fittings

作　　者：李和林[1] 刘东方[1] 杨俊梅[1] 徐璐[1] 张嵩涛[1] 刘岩[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《工业水处理》2014年第1期43-46,共4页Industrial Water Treatment

摘　　要：管件生产废水属于高酸性废水,废水含有高浓度的氨氮以及Fe2+、Zn2+等金属离子,缺少有机物,水质呈现"低碳高氮"特征。通过水质分析,选用"物化+生化"的组合处理工艺处理该废水。利用二级中和、混凝沉淀作为物化预处理工艺,并采用"A/O/A/O"型SBR反应器进行生物脱氮。针对组合处理工艺的试验研究表明:该工艺对TFe、Zn2+的去除率可达99%以上,出水TN<10 mg/L。处理水水质优于《污水综合排放标准》(GB 8978—1996)的一级标准,可全部作为厂区回用水。The wastewater from the production of pipe fittings is highly acidic. The wastewater contains highly con- centrated ammonia/nitrogen, as well as metallic ions, such as Fe2＋, Zn2＋, etc. and is lack of organic matter. Its water quality is characterized by ＂low carbon ＆ high nitrogen＂. By analyzing the wastewater quality, the combined physi- co-chemical and bio-chemical process has been selected. The two-stage neutralization-coagulation precipitation pro- cess is used for the physico-chemical pretreatment, and A/O/A/O-type SBR is used for biological denitrification. The results indicate that by this process the removing rates of TFe and Zn2＋ could be above 99%, 10 mg/L. The treated water quality is superior to the first class Integrated Wastewater Discharge Standard （GB 8978-1996）, and the effluent can fully be reused in the factory.

关 键 词：酸性废水 除铁 除锌 生物脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]