生物操控技术在城市静态受污染水体生态修复中的应用

综合应用水循环增氧和生物操控技术,在污染静态水体中重建良性发展的人工生态系统。试验结果表明,利用循环增氧可以促进浮游藻类的生长及其对水体污染物的吸收;所构建的"浮游藻类—枝角类—滤食性鱼类"为主线的食物链,可以促进藻类生物量向更高营养等级的转化。本试验所开发的技术能够提高和稳定水体生态对污染物的负载力,为修复污染静态水体生态提供了一个新的组合手段。

Application of bio-manipulation technology to restoration of ecosystem of urban static polluted water

On the basis of increasing oxygen by means of water circulation,the technology of bio-manipulation was used to rebuild a healthy ecosystem in static state polluted water.The results show that increasing dissolved oxygen by circulating water could advance the growth of phytoplankton and their capacity to absorb pollutants in water.Also,by rebuilding artificial food chains in which Cladocera and filter feeding fish are the main line,the transformation of the biomass of algae to high trophic levels can be promoted.An artificial food chain was established in this experiment.It could absorb,transfer and concentrate pollutants,increase and stabilize the carrying capacities of aquatic ecosystems and achieved the goal of restoring the ecosystem of polluted static waters.