【摘要】 采用内置新型复合填料的生态沟技术处理受轻微污染的长广溪河水,填料主要由铁屑、铜屑和木屑组成,质量比依次为10∶1∶0.5。中试实验设1#和2#两个单元相互对照,每3⁵ d采样一次,从2015年7月3日持续至8月17日,分别对进出水的TP、DTP、TN、DTN、NH₃-N和COD进行监测,结果显示,该工程对TP、DTP、TN、DTN的去除效果都能保持在较稳定的状态,最高去除率分别可达68.61%、76.45%、46.26%和50.59%,NH₃-N和COD去除效果有较大波动,NH₃-N的最高去除率可达73.99%,COD去除效果不明显。更多还原

【Abstract】 A pilot experiment was conducted for building a so-called "clear-water gallery"to purify micro-polluted river water of the Changguangxi River by use of a novel technique of ecological ditch. The ditch was packed with iron and copper filings,and sawdust with a mass ratio of 10（iron）∶1（copper）∶0.5（sawdust）. The experiment started from July 3 to August 172015,involving the monitoring of influents and effluents of the ditch;water samples were taken every 3 to 5 days and concentrations of TP,DTP,TN,DTN,NH₃-N and COD were analyzed,respectively. The result of the experiment showed that the removals of TP,DTP,TN and DTN,being relatively stable,could reach up to 68.61 %,76.45%,46.26% and50.59%,respectively. However,it seemed that removal efficiencies of NH₃-N and COD were unstable,the removal of NH₃-N could be up to 73.99%,but removal of COD was not so good（10%²0%）.更多还原