铜绿微囊藻对漂浮栽培植物去除氮磷效应的影响

Influence of Microcystis aeruginosa on Efficiency of Nitrogen and Phosphorus Removal from Eutrophic Water by Floating Culture Plants

以不同季节的漂浮栽培植物大漂(Pistia stratiotes Linn.)和冬牧70(Secale cereale L.)为研究对象,研究了铜绿微囊藻对两种植物去除氮磷效应的影响。结果表明,总氮(TN)的去除效率由高往低依次为:铜绿微囊藻+大漂82%>铜绿微囊藻76%>大漂68%>对照CK 23%;铜绿微囊藻+冬牧70 79%>冬牧70 65%>铜绿微囊藻61%>对照CK 11%;TP的去除效率由高往低依次为:铜绿微囊藻+大漂83%>铜绿微囊藻79%>大漂68%>对照CK 26%;铜绿微囊藻+冬牧70 77%>冬牧70 68%>铜绿微囊藻63%>对照CK18%。因此,铜绿微囊藻对富营养化水体中的氮磷有较好的吸收去除作用,特别是当藻类与植物相结合修复富营养化水体时可以有效提高水体中氮磷的去除效率,但是重要的前提条件是两者之间并无明显的克生作用存在。

The influence of Microcystis aeruginosa on efficiency of nitrogen（N） and phosphorus（P） removal from eutrophic water by floating culture plants including Pistia stratiotes Linn.and Secale cereale L.were studied respectively in different seasons.It was concluded that Microcystis could effectively improve the efficiency of N and P removal and purify effect of eutrophic water when it was combined with floating culture plants;however,the important precondition of this conclusion was there was no obvious restraint action between themselves.After treated time for total nitrogen（TN） removal,Microcystis＋Pistia L.82%Microcystis 76%Pistia L.68%Contrast 23%;Microcystis＋Secale L.79%Secale L.65%Microcystis 61%Contrast 11%.For total phosphorus（TP） removal,Microcystis＋Pistia L.83%Microcystis 79%Pistia L.68%Contrast 26%;Microcystis＋Secale L.77%Secale L.68%Microcystis 63%Contrast 18%.