摘要
近年来,北京动物园水体富营养化严重,水华时有发生。动物园湖水质改善工程是北京市政府为解决动物园水体富营养化问题所实施的工程。工程核心MBR(Membrane Biology Reactor,膜生物反应器)工艺处理污染物种类多、效果好,对叶绿素a平均处理率接近90%,对总氮、总磷等引起富营养化的关键指标也有较好的处理率;动物园湖水质改善工程实施后湖水由劣Ⅴ类水体恢复到了Ⅳ类,整个湖区富营养化程度都在减轻,大部分水质指标浓度呈现一个明显的下降趋势。北京动物园湖水质改善工程实施效果显著。
In recent years, lake eutrophication in Beijing zoo became a serious problem, and algal bloom oc- curred frequently. The water quality improvement project of the zoo lake was carried out by Beijing govern- ment in order to deal with the lake eutrophication. MBR （Membrane biology reactor） technology can effi- ciently remove many kinds of pollutants. For chlorophyll the removing effect of MBR technology could reach 90%. After treatment with the technology, the total nitrogen and total phosphorus, which are the key indicators of eutrophication, decreased significantly. After the implementation of the project, water quality was improved from class V to class IV, the eutrophication degree in the whole lake decreased significantly, concentration of most of the water quality index decreased as well. Therefore, the water quality improvement project in Beijing zoo lake was completed with remarkable effect.
出处
《北京水务》
2013年第1期30-34,共5页
Beijing Water
