摘要
江苏盐城市在龙冈镇蟒蛇河南岸建设了饮用水源生态净化工程中试系统,以改善饮用水的原水水质。为了探索以挺水、沉水以及浮叶植物构建的表流湿地对微污染原水的水质净化效果,在系统实际运行中,分季节在表流湿地进出口进行了实地采样分析。分析结果表明:①表流湿地对TP、TN、NH3-N、COD Mn及浊度的去除效果较好;对DO有一定影响,使其降低了10.9%;②不论温度如何变化,湿地系统对TP的去除率基本可保持较高水平;而TN的去除率与温度成正比关系;NH3-N及COD Mn去除率在夏、秋季有所波动,但在冬春季,NH3-N去除效果较好,而COD Mn的去除效果不明显;DO降低表现为夏秋季大于冬春季;浊度的去除率表现为冬季大于秋季,秋季大于夏季。
In order to improve the original quality of drinking water, Yancheng City constructed an ecological drinking water purifying system （ surface flow wetland） at Longgang Town. For exploring the water purifying effect of system by emergent aquatic plant, submerged aquatic plant and floating - leaf plant, in the practical application process of the system, water samples were taken at inlet and outlet of the wetland in different seasons. The analysis results show that ： ① the surface flow wetland has a good removal effect on TP, TN, NH3 - N and CODMn, and has a certain effect on DO with a reduction of 10.9%. ② the removal rate of TP can maintain a higher level regardless of temperature change ; removal rate of TN is proportional to temperature ; the removal rates of NH3 -N and CODM. fluctuate in summer and autumn, and then decline in winter- spring; the reduce of DO in summer - autumn is higher than that in winter while the removal rate of turbidity is in an order of winter 〉 autumn 〉 summer.
出处
《人民长江》
北大核心
2013年第19期91-95,共5页
Yangtze River
基金
江苏省水利科技项目(2010022)
关键词
表流湿地
微污染原水
生态净化
效果分析
盐城市
surface flow wetland
micro -polluted raw water
ecological purification
effect analysis Yancheng City
