摘要
详细介绍了T型氧化沟工艺的特征,并考察研究了该工艺处理低碳源生活污水的长期运行效果。研究结果表明,工艺出水COD、BOD5、NH3-N、TN和TP年平均浓度分别为13.9、3.8、0.91、18.80和1.67 mg/L,去除率分别为88.99%、94.37%、96.74%、37.57%和41.58%,均能达到相应的排放标准。由于T型氧化沟中以好氧环境为主,缺乏厌氧和缺氧环境以及进水的BOD5/TN值低,工艺对有机物及NH3-N的去除效果较好,但TN和TP去除效果较低。提出了加强工艺脱氮除磷的措施,为同类型污水处理厂改造提供参考。
Characteristics of T type oxidation ditches process were presented and long - term operation effect of treating low - carbon municipal sewage by the process was investigated. Results showed that annual concentrations of COD, BOD5 , NH3 - N, TN and TP in the effluent of the process were 13.9,3.8,0. 91,18.80 and 1.67 rag/L, respectively. The removal percentages of COD, BOD5 ,NH3 - N, TN and TP were 88. 99 % , 94. 37%, 96. 74%, 37.57% and 41.58% respectively, which could meet the discharge standards. Because the environment in T Type Oxidation Ditches was mainly aerobic, the lack of anoxic and anaero- bic environment and the BODJTN of inlet was low, the process had high removal percentage of organic matter and NH3 - N, but low removal percentage of TN and TP. This proposed measures to strengthen the denitrification and dephosphorization in T type ox- idation ditches process, providing reference to the improvement of the same kind wastewater treatment plants.
出处
《环境科学与管理》
CAS
2012年第6期84-88,共5页
Environmental Science and Management
关键词
T型氧化沟
脱氮除磷
低碳源
低C/N生活污水
改造
T type oxidation ditches
denitrification and dephosphorization
low - carbon
low-C/N municipalsewage
modification
