APPLICATION OF IN-SITU MICROBIOLOGICAL TECHNOLOGY FOR WATER QUALITY IMPROVEMENT OF THE LIANGMA RIVER IN BEIJING

In-situ microbiological technology is an innovative way for fast, complete and efficient destruction of organics by activating indigenous microorganisms in water bodies. Field application results in the Liangma River indicated that COD and TP of the downstream decreased obviously; the change in NH₃-N was not obvious because of the relatively low background value. When the system worked for 60 days, the data indicated that species in downstream were abundant with a high biodiversity. The species of phytoplankton and zoobenthos in downstream also possessed higher species richness than that in upstream. In-situ microbiological technology can not only improve water quality and the sediment, but also replenish biological diversity, and consequently enhance the water's self-purification ability.