镜河水绵季节性爆发综合治理对策研究

Study on prevention and control of the seasonal Spirogyra outbreak in the Jing river

针对北京城市副中心行政办公区的镜河水系水绵季节性爆发生长的情况,采取投撒生物制剂、种植水生植物和鱼类增殖放流的综合措施以防控水绵生长。通过对镜河水体的采样检测,分析对比了叶绿素a、生化需氧量BOD5、化学需氧量CODCr、总磷TP、总氮TN和氨氮NH3-N等指标的变化情况,结果显示综合措施对防治水绵起到了有效作用,各指标总体均呈下降趋势,镜河水质得到明显改善。

In response to the seasonal Spirogyra outbreak of the Jing river water system in Beijing Sub-center administrative office area,a comprehensive plan were carried out to prevent the explosive Spirogyra including scattering biological preparations,planting aquatic plants and enhancement and releasing of fishes.Through sampling and testing parameters of the Jing river water,the changes of chlorophyll a,B0 D5,C0 DCr,total phosphorus,total nitrogen and ammonia nitrogen were analyzed and compared.All the parameters show a downward trend,which mean that the comprehensive plan is effective in preventing and controlling Spirogyra outbreak.In addition,the water quality of the Jing river was improved obviously.