悬挂链曝气倒置A^2O/生物流化床处理纺织工业园废水  

Industrial Park Textile Wastewater Treatment by Combination Process of Suspension Chain Aeration Inversion A^2O/Biological Fluidized Tank

作　　者：薛良森 XUE Liang-sen(China Railway First Survey and Design Institute Group Co. Ltd.,Xi’an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司

出　　处：《中国给水排水》2019年第14期59-62,66,共5页China Water & Wastewater

摘　　要：江苏闽豪科技工业园废水以毛纺织工业、丝绸工业、针织工业废水为主,具有COD、SS浓度较高,有机物难以降解的特点。该工业园污水处理厂一期工程采用预处理/悬挂链曝气倒置A^2O/曝气生物流化床/高密度沉淀池/滤布滤池组合工艺处理园区综合纺织废水,工艺选型先进,抗污染负荷能力强。当平均废水处理量为4 460 m^3/d,进水BOD5、COD、SS、氨氮、TN、TP平均浓度分别为158、560、246、23. 4、42. 7、4. 2 mg/L时,相应指标的平均出水浓度分别为4、28、1. 1、1. 7、4. 9、0. 2 mg/L,出水水质优于《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准。本项目污水处理经营成本为2. 6元/m^3。The wastewater from Minhao Science and Technology Industrial Park in Jiangsu Province mainly contained wool textile industry wastewater,silk industry wastewater and knitting industry wastewater,which had the characteristics of high concentration of COD and SS and difficult degradation of organic matter. The combined process of the pretreatment/suspension chain aeration inversion A2O/aeration biological fluidized tank/high-density sedimentation tank/filter cloth filter was adopted to treat the comprehensive textile wastewater in phase I wastewater treatment project of the industrial park,which had characteristics of advanced process selection and strong anti-pollution load ability. When the average wastewater treatment capacity was 4 460 m3/d,and the average concentration of influent BOD5,COD,SS,ammonia nitrogen,TN and TP were 158 mg/L,560 mg/L,246 mg/L,23. 4 mg/L,42. 7 mg/L and4. 2 mg/L,the average effluent concentration of corresponding indexes were 4 mg/L,28 mg/L,1. 1 mg/L,1. 7 mg/L,4. 9 mg/L and 0. 2 mg/L. The effluent quality was better than the first class A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The operating cost of the wastewater treatment project was 2. 6 yuan/m3.

关 键 词：纺织废水 悬挂链曝气 曝气生物流化床 

分 类 号：TU992.3[建筑科学—市政工程]