摘要
本文评估了一级强化预处理+人工湿地在处理生活污水方面的使用范围,提出当进水中氨氮达到35mg/L,通过一级强化预处理以及人工湿地的出水难以达到一级B标准;同时由于人工湿地大部分为厌氧环境,对硝态氮去除效果良好,本文提出在进水氨氮浓度较高的情况下,将硝化加入人工湿地的预处理,利用人工湿地的一部分硝化能力和良好的反硝化能力使出水达标排放。
In this paper,the applicability of process of intensive primary pretreatment plus constructed wetland to treat domestic sewage is evaluated.It suggests that when the influent concentration of ammonia nitrogen reaches 35mg/L,the effluent from the process of intensive primary pretreatment plus constructed wetland is difficult to meet the Standard B of Level 1 in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB8978-1996）.Meanwhile most of the constructed wetland is in anoxic environment,in which it′s good to remove nitrate nitrogen.It is proposed that when influent concentration of ammonia nitrogen is high,the nitrification should be added into the pretreatment of constructed wetland,using the nitrification and denitrification in the wetland for effluent to reach the discharge standard.
出处
《四川环境》
2011年第1期48-52,共5页
Sichuan Environment
基金
国家科技支撑计划项目:东部村镇住区生态建设技术研究与示范(2006BAJ04A09)
村镇住宅污染物处置排放技术标准模式集成与示范研究(2008BAJ08B21)
关键词
人工湿地
氨氮
生活污水
预处理
Constructed wetland
ammonia nitrogen
domestic sewage
pretreatment
