Studies On Eutrophication In Riverine Reservoir

The construction of Honghua hydropower station played an important role in promoting the development of Liuzhou City social economy. More importantly, The high-paced development of manufacture in Liuzhou City and the weak reservoir water exchange capacity has imposed heavy burden on the Liujiang River and had an adverse impact on eutrophication. Therefore, the study on situation, trend and prevention of eutrophication in the Liujiang River of Liuzhou City which is an riverine reserine. However, to date, there have been little reports on the occurrence of eutrophication in Liujiang River section of Liuzhou City was imperativeThe objective of this paper is to explore the eutrophication control factors (regulatory surveys, and nutrients) on the river course over a period of 11 years (2004-2013) in the mainstream of Liujiang River section of Liuzhou City. At the same time, the monitoring data of eutrophication state from June,2014 to May, 2015 were tested for a comprehensive evaluation of liujiang river in Liuzhou City, including the nitrogen, phosphorus nutrient and chlorophyll-a. The space-time distribution changes of the eutrophication relevant indicators has been explored. Through the analysis and research, the prevention and control measures of water protection of the liujiang river in liuzhou section were finally put forward. The following tasks were performed:(1) Through consulting documents and collecting information, we systematically mastered the water resources and river plans of Liujiang river, understood the location and water conservancy of Honghua reservoir and mastered the history water quality state of Liujiang river in Liuzhou section (2004-2013);(2) In a hydrological year (from June 2014 to May 2015), the water eutrophication status of Liujiang river in Liuzhou section was studied, including the physical index, chemical and biological indicators;(3) The water of two stance (the Urban and the Suburban) were choosed for simulation test, to simulate the evolution of advantage algaeof Liujiang and water eutrophication process in the condition of different environment and nutrient concentrations.(4) The results will provide useful information to control the nutrient emissions and water quality management in the Liujiang River.