通过自行设计的水生植物系统对污水的净化处理,研究了自1990年8月至1991年4月共8个月污水处理过程中,系统内藻类种类、数量及叶绿素 a 含量变化.研究结果表明。系统中共鉴定到藻类40个属,始终以小球藻为优势种,藻类数量和叶绿素 a 含量在系统中呈现有规律的变化.同时,藻类的特征在一定程度上指示了系统设计的合理性及对污水处理的效果较高.
This paper studied B (biomass of aquatic vascular plants) and N chemical compounds in two large-scale enclosures and one fence in East Lake of Wuhan from July,1993 to February,1995.B was highly negatively related to the concentration of NO 3-N in water.The concentration of TN in water obviously decreased when aquatic vascular plants grew well.The concentration of NO 3-N decrease was the major reason that leading to the decrease of TN concentration in water.Percentage of IN was obviously lower than that of ON.The concentration of IN was closely related to aquatic plants growth.The B in the enclosures was obviously higher than that in The control’s.The concentrations of NO 3-N,IN,and TN in the enclosures were obviously lower than those in the control’s.The concentrations of NH 4-N,NO 2-N and ON in the enclosures were not obviously different from thosein the control′s.
