摘要
曝气—过滤一体化装置将生物反应器与过滤机理有机结合,较好地维持了反应器中的高污泥浓度,实现了水力停留时间(HRT)与污泥停留时间的分离。采用连续流间歇曝气工艺对该装置的脱氮除磷效果进行了研究。实验结果表明:在 HRT 为8 h,运行方式为曝气2 h、停曝2 h 的条件下,COD 去除率为95.55%,NH_3-N 未检出,TN 为84.90%,TP 为93.69%,出水各项指标都达到了 GB8978—1996《污水综合排放标准》一级排放标准要求。
The integrated aeration-filtration reactor, which combines a bioreactor with a filter, maintains a higher sludge concentration and realizes the separation between HRT and SRT. Continuous flow-intermittent aeration technology was adopted to study the nitrogen and phosphorus removal effects of this reactor. Under the optimized operating conditions of HRT 8 h, intermittent aeration cycle 2 h - 2 h, the removal rates of COD, NH3-N, TN and TP are 95.55%, 100% ,84.90%, and 93.69% , respectively, which can meet the first grade discharge standards of integrated wastewater discharge standards （GB8978-1996）.
出处
《化工环保》
CAS
CSCD
北大核心
2008年第4期304-307,共4页
Environmental Protection of Chemical Industry
关键词
曝气-过滤一体化装置
连续流
间歇曝气
脱氮
除磷
integrated aeration-filtration reactor
continuous flow
intermittent aeration
nitrogen removal
phosphorus removal
