【摘要】 试验采用A/O/O生物膜系统对锦纶废水进行处理,考察了硝化液回流比、水力停留时间、DO和进水COD及TN浓度对系统处理效果的影响。结果表明,当进水COD和TN分别为480～525mg/L和24～26mg/L,硝化液回流比3,单个反应器HRT为3.9h,好氧池I和Ⅱ内DO均为3.0mg/L左右时,系统COD和TN去除率分别达95%和70%,出水氨氮低于1.5mg/L,满足GB8978-96污水综合排放一级标准。更多还原

【Abstract】 An A/O/O biofilm process was studied for the treatment of Nylon-6 wastewater,and influence factors like nitrate recirculation ratio,HRT(Hydraulic retention time),DO as well as the influent COD and TN were investigated.Results indicated that when the influent COD and TN were 480～525mg/L and 24～26mg/L respectively,nitrate recirculation ratio was 3,HRT in each reactor was 3.9h,DO in aerobic tank I and Ⅱboth were approximately 3.0mg/L,the removal rates of COD and TN could reach to 95% and 70%.Meanwhile the effluent quality met first class discharge standard specified in GB8978-1996 and the ammonia in effluent was less than 1.5mg/L.更多还原