水体沉积物磷释放及控制

分类介绍了影响水体沉积物磷释放的各种因素,其中主要分析了温度、pH值、溶解氧、沉积物磷形态、水体扰动的影响,认为影响释放的主导因素因地而异。评述了目前较多采用的控制磷释放的措施,包括自然净化、原位固定、底泥疏浚、生态修复、稀释冲刷等,着重分析了前四者的优缺点,认为目前综合利用这些控制技术会取得较好效果,提出最终要以生态学方法来控制磷释放和解决富营养化问题。

Influencing factors and control techniques of phosphorus release from sediment

The release of phosphorus from sediment is influenced by many factors. The effects of temperature, pH, DO, form of phosphorus in sediment and hydrodynamic conditions are discussed respectively. The major influencing factors vary in different surroundings. Techniques controlling phosphorus release, such as natural reduction, in-situ fixation, sediment dredging, and ecological restoration are analyzed and compared. It is concluded that the problem can be settled only in ecological ways.