桂林理工大学学报2011，Vol.31Issue(2)：252-257,6.
组合工艺对农村生活污水中氮磷的去除效果
Nitrogen and Phosphorus Removal from Rural Domestic Wastewater in Combined Process
摘要
Abstract
Nitrogen and phosphorus removal by " Anaerobic bioreactor + Subsurface horizontal-flow compound wetland" for rural sewage treating is studied. The total nitrogen varies from 10. 3 to 51. 8 mg/L, ammonia from 6. 8 to 44. 7 mg/L, while total phosphorus ranges from 0. 9 to 5. 2 mg/L in rural domestic wastewater. At anaerobic bioreactor's HRT of 24 h and artificial wetland's HRT of 48 h, the average removal efficiency for TN, ammonia and TP are 30. 7% , 42. 9% and 72. 3% , respectively. The treatment performance ranks in a descending order as following: summer, spring and winter. The major mechanism for COD removal in combined technology is hydrolisis acidification, matrix interception and microorganism metabolism. The total nitrogen is mainly removed through microorganism function and plant absorption in artificial wetland, while the total phosphorus mainly through matrix absorption. In order to improve the overall TN removal we can set an oxygenation equipment after anaerobic bioreactor, which can improve DO in wastewater and increase the nitration ability in artificial wetland.关键词
组合工艺/农村生活污水/脱氮除磷Key words
combined technology/ rural domestic wastewater/ nitrogen and phosphorus removal分类
资源环境引用本文复制引用
徐芝芬,李金城,莫德清,阙光龙,李文文,孙鑫,苏春良,黄朗妃..组合工艺对农村生活污水中氮磷的去除效果[J].桂林理工大学学报,2011,31(2):252-257,6.基金项目
广西高校人才小高地建设“环境工程”创新团队资助计划项目(桂教人[ 2007] 71) （桂教人[ 2007] 71）
桂林市科技局科技开发项目(20100126-2) （20100126-2）
广西教育厅科研项目(201010LX172) （201010LX172）
