摘要
对重庆某合建式完全混合活性污泥法污水处理厂，采用连续流间歇曝气工艺进行了脱氮除磷生产性试验研究，设定了１４种曝气－停曝工况进行优选，结果表明，当采用曝气 ３ｈ、停曝 ３ｈ的运行方式时，出水中 ＣＯＤ为 ３８ｍｇ／Ｌ，ＮＨ_３－Ｎ为 ８．５ｍｇ／Ｌ，ＳＳ为 １４ｍｇ／Ｌ，都能达到ＧＢ８９７８－１９９６的一级排放标准要求，如果辅以化学除磷，出水中ＰＯ_４^（３－）－Ｐ才能达标．
A full-scale research was conducted with continuous flow-intermittent aeration technology adopted for nitrogen and phosphor removal in a wastewater treatment plant with completely mixed activated sludge process in Chongqing City. 14 aeration-intermittent operation cycles were studied to determine the optimal one. Results indicate that when an operation cycle of which aeration lasts 3 hours and intermission lasts 3 hours was adopted, the concentrations of COD, NH_3-N and SS in effuent were 38, 8.5 and 14mg/L respectively, which might achieve the first grade discharge standard of GB8978-1996. If chemical method was also applied, the PO_4^(3-)-P concentration would reach the standard.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2000年第4期366-370,共5页
China Environmental Science
基金
国家自然科学基金!(59838300)
关键词
连续流
间歇曝气
脱氮
除磷
废水处理
continuous flow
intermittent aeration
nitrogen and phosphor removal
