生物操纵法治理富营养化湖泊的细菌类群研究

The Studies of Bacteria in Biomanipulation to Recover Eutrophic Lakes

从污染水体中分离筛选出高效降磷除氮菌共９５株，经分类鉴定为假单胞菌属（Ｐｓｅｕｄｏｍｏｎａｓ），芽孢杆菌属（Ｂａｃｉｌｌｕｓ），肠杆菌科（Ｅｎｔｅｒｏｂａｃｔｅｒｉａｃｅａｅ）和硝化细菌科（Ｎｉｔｒｏｂａｃｔｅｒａｃｅａｅ）．经降磷测定实验表明，降磷率高达３１％～８０％的菌株占总磷细菌数的４４％．将分离的菌株按不同比例组合投入装有富营养化湖水和底泥的模拟装置中进行降解实验，结果总氮下降最高达８９．９％，总磷下降最高达９０．６％，同时浮游动物数量大为增加．说明物质正沿食物链流动．

95 strains of bacteria which have efficient removal of P and N were isolated from eutrophic aquafer. They were identified as Pseudomonas, Bacillus, Euterobactenaceae.We released those bacteria with defferent proportion into reation apparatuses which contained eutrophic Lakes'water and sediment, and conducted degradation experiments, The result indicated that the gross N and P content decreased at most by 89.9%,90.6% respectively. The quantity of zooplanton increased greatly. Substances were flowing along the food chain.