山东农业科学2016，Vol.48Issue(8)：98-101,4.DOI:10.14083/j.issn.1001-4942.2016.08.023
砂土混合人工土快滤系统处理污水脱氮性能研究
Nitrogen Removal Performance of Constructed Rapid Infiltration Mixed with Sandy Soil in Treating Municipal Wastewater
摘要
Abstract
A constructed rapid infiltration (CRI)was developed to treat municipal wastewater with the mixture of sea sand and campus soil.The tests were conducted to investigate its pollutants’removal effects, especially nitrogen.The reactor structure was also optimized to enhance the total nitrogen removal.The results showed that CRI exhibited better removal effects on organic compound and ammonia nitrogen with the removal efficiency as 78% and 92% respectively;but the total nitrogen removal efficiency was only 33.4%;the COD and NH +4 -N removal were mainly focused on the upper 40 -cm layer,whereas the total nitrogen removal and denitrification occured on the lower 60 -cm layer of infiltration medium.Furthermore,the saturated zone with 30 cm in length was set up to artificially increase the anoxic zone and enhance the activity of denitrifying bac-teria,which could made the removal efficiency of total nitrogen reach 64.8%.关键词
人工土快滤/砂土混合物/饱水带/总氮/去除率Key words
Constructed rapid infiltration/Mixture of sand and soil/Saturated zone/Total nitrogen/Re-moval efficiency分类
资源环境引用本文复制引用
刘惠军,刘新程,曲威,王绍武..砂土混合人工土快滤系统处理污水脱氮性能研究[J].山东农业科学,2016,48(8):98-101,4.基金项目
烟台市科学技术发展计划项目 （）
