化工学报Issue(6)：2294-2300,7.DOI:10.3969/j.issn.0438-1157.2014.06.046
水力停留时间对生物膜/颗粒污泥耦合工艺脱氮除磷的影响
Effect of hydraulic retention time on nitrogen and phosphorus removal by biofilm and granular coupling process
摘要
Abstract
In home-designed coupling unit consisting of suspended carrier biofilm and granular sludge, biofilm supported nitrifying bacteria and denitrifying phosphorus granular sludge were used for investigating the effect of the hydraulic retention time (HRT) on nitrogen and phosphorus removal to arrive at optimizing process parameters. In the experiment, HRT was set at 6 h, 7 h, 8.5 h and 10.5 h. The results showed that when HRT was 8.5 h, the removal rates of COD, ammonia nitrogen and total nitrogen were 91.26%, 80.68%and 70.58%respectively. The release rate of phosphorus was 0.47 mg P·(g SS)-1·h-1, anaerobic phosphorus release and carbon source utilization were both at the highest rate, PO4 3--P removal rate 76.50%, denitrifying phosphorus removal efficiency 1.04 mg P·(mg NO-3-N)-1. At the hydraulic retention time 8.5 h, the system had higher nitrogen and phosphorus removal efficiency. When the HRT was too short, nitrogen and phosphorus removal was incomplete, If too long, the system was unstable. Therefore, the system’s optimal hydraulic retention time was 8.5 h.关键词
水力停留时间/生物膜/颗粒污泥/耦合Key words
hydraulic retention time/biofilm/granular sludge/coupling分类
资源环境引用本文复制引用
尹航,何理,卢健聪,高辉,高大文..水力停留时间对生物膜/颗粒污泥耦合工艺脱氮除磷的影响[J].化工学报,2014,(6):2294-2300,7.基金项目
国家自然科学基金项目（21177033）。@@@@supported by the National Natural Science Foundation of China (21177033) （21177033）
