滨海河道型复合湿地冬季脱氮除磷效果研究  

Denitrification and Phosphorus Removal Effect of Coastal Watercourse Wetland in Winter

作　　者：袁敏[1] 廖光龙 孙静[1] 高郁杰[1] 刘红磊[1] 常文韬[1] 闫佩[1] 

机构地区：[1]天津市环境保护科学研究院,天津300191

出　　处：《城市环境与城市生态》2016年第1期35-38,42,共5页Urban Environment & Urban Ecology

基　　金：天津市科技支撑计划项目于桥水库湖滨带生态修复与重建技术研究及工程示范(14ZCZDSF00003)

摘　　要：为了探讨冬季滨海湿地对污水处理厂出水净化的效果,在2013年冬季12月份—次年2月份对天津泰达河道型复合湿地进行4次采样监测,结果表明当水温＆gt;5℃时,河道型复合湿地脱氮除磷效果良好,湿地出水总氮浓度≤2mg/L,总氮去除率均维持在85%以上,总磷浓度≤0.105 mg/L,总磷去除率均维持在89%以上;当水温5℃下降至1℃以下）脱氮除磷效果呈现出一定的波动,但当水温逐渐上升时,湿地脱氮除磷潜能将很快恢复。河道型复合湿地沿程污水中总含盐量呈现出累积现象,出水口增幅为1.28~2.08倍,含盐量的累积将成为滨海盐碱地区开展湿地工程建设的一个瓶颈。To study the（advanced） purification effect of the secondarily-treated effluent from the local wastewater treatment plant by coastal wetland, the samples from Tianjin TEDA（Tianjin Economic-Technological Development Area） watercourse wetland were monitored for four times from December 2013 to February 2014. The result showed that when the water temperature was higher than 5℃, the denitrification and phosphorus removal effect was good in the watercourse wetland. The total nitrogen concentration in the wetland effluent was lower than or equal to 2 mg/L, and the total nitrogen removal rate was maintained above 85%. The total phosphorus concentrationwas lower than or equal to0.105 mg/L, and the total phosphorus removal rate was maintained above 89%. When the water temperature was lower than 1℃, the total nitrogen concentration was 5.97 mg/L, and the total nitrogen removal rate decreased to 50.66%. The total phosphorus concentration was 0.3 mg/L, and the total phosphorus removal rate dropped to 16.67%. Although the removal effect of nitrogen and phosphorus of watercourse wetland showed a certain degree of fluctuation with the decrease of water temperature in winter, when the water temperature gradually increased, the potential of nitrogen and phosphorus removal was quickly recovered. The concentration of total dissolved solids showed a cumulative trend along with the watercourse wetland. The concentration of salinity at the water outlet increased by 1.28~2.08 times, and the accumulation of total dissolved solids became a bottleneck for wetland construction in coastal saline areas.

关 键 词：冬季 河道型复合湿地 脱氮除磷 总含盐量 

分 类 号：X505[环境科学与工程—环境工程]