摘要
为解决纺织行业水回用问题,采用陶粒和活性炭组合填料生物滤池对锦纶废水二级生物处理出水进行了深度净化,并考察了气水比和水力负荷对曝气生物滤池处理效果的影响。研究结果表明,曝气生物滤池处理效果良好,平均出水COD、NH4+-N和TN分别为32 mg/L、1.5 mg/L和8.1 mg/L。随着气水比的增加,COD和NH4+-N平均去除率相应提高,TN平均去除率先增大后降低,当气水比为2∶1时,COD、NH4+-N和TN平均去除率分别为48.30%、84.24%和42.18%;随着水力负荷的增加,COD、NH4+-N和TN平均去除率均降低,当水力负荷为0.39 m3/m2.h时,COD、NH4+-N和TN平均去除率分别为48.33%、84.81%和42.54%。
Aiming at solving the reuse of textile wastewater, a combined packing biological aerated filter was selected for the advanced treatment of nylon-6 secondary effluent and the affecting factors were also investigated. The results showed that the good performance of BAF has been achieved and average COD, NH4^＋ -N and TN in the effluent were 32 mg/L, 1.5 mg/L and 8. 1 rag/L, respectively. COD and NH4^＋ -N removal effieieneies increased and TN removal efficiency first increased and then decreased with different air-to-liquid ratios. As the air-to-liquid ratio of 2： 1, the average removal effieieneies of COD, NH4^＋ -N and TN were 48.30% , 84.24% and 42. 18% , respectively. The removal effieieneies of COD, NH4^＋-N and TN all decreased with different hydraulic loadings. When the hydraulic loading was 0. 39 m^3/m^2 · h, the average removal effieieneies of COD, NH4^＋-N and TN were 48.33% , 84.81% and 42.54% , respectively.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第4期38-43,共6页
Chinese Journal of Environmental Engineering
基金
上海市科委资助项目(042312045)
上海市博士后资金资助项目
关键词
曝气生物滤池
深度处理
气水比
水力负荷
biological aerated filter
advanced treatment
air-to-liquid ratio
hydraulic loading
