低温域人工湿地强化脱氮效果研究  

STUDY ON IMPROVING DENITRIFICATION EFFECT OF CONSTRUCTED WETLANDS AT LOW TEMPERATURE

作　　者：崔明勋[1] 高海鹰[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《环境工程》2013年第S1期310-311,320,共3页Environmental Engineering

基　　金：国家自然科学基金(40871026)

摘　　要：在低温条件下(0~15℃),研究麦冬湿地在预曝气、非曝气两种状态下的脱氮效果。结果表明,预曝气人工湿地内氧环境得到明显改善,供氧前湿地内溶氧浓度低于0.6 mg/L,供氧后氧浓度上升至0.9 mg/L以上。对TN、NH+4-N去除率,预曝气湿地】非曝气湿地。因此,预曝气是低温域人工湿地强化脱氮的一种有效措施。Denitrification in pre-aeration and common ophiopogonis constructed wetland,at low temperatures( 0 to 15℃) are compared in this paper. The results indicated that: Pre-aeration improves the oxygen condition,which is under 0. 6 mg/L before pre-aeration but over 0. 9 mg/L after pre-aeration. The removal rates of TN,pre-aeration wetland> common wetland. Pre-aeration is a useful way to improve denitrification of constructed wetland at low temperature.

关 键 词：人工湿地 低温 脱氮 预曝气 

分 类 号：X703[环境科学与工程—环境工程]