梯级滞留塘应用于入湖河流原位净化效果研究

In-situ Purification of Lake Inlets with a Step Detention Pond System

为控制和削减进入受纳水体的径流污染负荷,根据贵州山区河流落差大的特点,开发了山区污染河水梯级滞留塘生态净化技术,并进行了工程示范。结果表明,梯级滞留塘系统对总磷、氨态氮、悬浮物的去除率分别为79.3%、74.0%和73.2%,水质得到了显著的改善。梯级滞留塘是一项适用于中小型污染河流净化的生态技术,具有重要的推广应用价值。

In order to control and cut into the receiving water runoff pollution load,a step detention pond ecological purification restoration technique for mountain areas pollution restoration was developed and applied based on the local land features.The results suggested that the removal rates of step detention pond for TP,NH＋4-N and SS were 79.3%,74.0% and 73.2%.A step detention pond system（DPS） was an ecological technology which was suitable and promising for purification restoration of polluted small-scale streams in China.