摘要
人工湿地能有效地处理污水 ,而且运转费用低。本文通过一个小型复合流人工湿地的设计及两个月的运作 ,监测了COD、NH3-N、NO- 3-N、NO- 2 -N等指标 ,并分析了影响这些指标变化的主要因素 ,探讨该湿地对有机物的去除效率。实验结果表明 ,复合流人工湿地对有机物的去除效果较好 ,CODMn的去除率可达到 60 %～ 70 % ;植物在湿地污水处理中起着相当重要的作用 ;该湿地对NH3-N和NO- 3-N有一定去除效果 ,而对NO- 2
Man-made wetland is effective for wastewater treatment with low operation cost.In this paper based on a specifically designed lab-scale composite flow man-made wetland and its two-month operation.Some indexes,such as COD,NH_3-N,NO^-_3-N,NO^-_2-N in the wastewater have been monitored,main factors affecting these indexes have been analyzed and the wetland organic matter elimination efficiency has been studied.The study results indicate that the composite flow man-made wetland is quite effective in eliminating organic matters from the wastewater,elimination rate of COD_(Mn) can reach 60%-70%.Plant in wetland plays an important role in sewage disposal.The wetland has definate efficiency in eliminating NH_3-N and NO^-_3-N but does not have evident effectiveness for elimination of No^-_2-N.
出处
《水电站设计》
2004年第2期90-92,共3页
Design of Hydroelectric Power Station
关键词
人工湿地
城市污水
有机物
污水处理
CODMn去除率
污染负荷
man-made wetland
COD_ Mn elimination efficiency
retention time
pollutional load
NH_3-N
NO^-_3-N
urban sewerage
