城市人工湿地对人工湖水体净化效果研究

摘要

The object of this article was to investigate the effects of urban constructed wetland on water purification efficacy for artificial lake. Four sampling spots were selected from Ruyi lake and wetland park in Zhengdong area of Zhengzhou city,including purification inlet,drop-aeration tank,purification exit and the middle of the lake. The removal efficiency on purification of BOD5, CODMn, TN, TP in Ruyi lake by constructed wetland was evaluated. The results showed that constructed wetland could re-duce pollutant BOD5, CODMn, TN, TP in artificial lake efficaciously. It indicated that constructed wetland played an important role in purifying and protecting the water purity of the artificial lake water. The constructed wetland made the lakes run smoothly and kept the water quality at a constant level ofⅡ to Ⅲ degrees.%以郑州市郑东新区如意湖及湿地公园为研究对象,选取净化入口、跌水曝气池、净化出口和湖中4个样点采集水样并进行相关测试,检测了人工湿地对如意湖水体中BOD5、CODMn、TN、TP的去除效果.结果表明,人工湿地能有效地去除人工湖中的BOD5、CODMn、TN、TP等污染物,对人工湖水质能起到重要的净化保护作用,经人工湿地处理后的如意湖运行平稳,水质常年保持在Ⅱ至Ⅲ类水平.