Studies On Water Environmental Accessment Of Yongjiang River In Nanning Urban Section

Being a multi-functional water body and important water source, the Yongjiang River in Nannning urban section plays a very important role in watering, shipping, industry and agriculture. The quality of the water body has a direct influence on the development of Nanning City such as economics, social sustainability, etc. So it is quite significant to find a water quality model fitted with the existing status and problems of the water source for Yongjiang River in Nannning urban section to predict the water quality and provide basis for environmental assessment and prevention, and utilization and management of water resource.Based on the information of hydrology, water quality, natural and social environment of Yongjiang River in Nannning urban section which searched in recent years, the contaminative features, the most disadvantageous season and the primary components of the pollutants have been identified. At the same time through the research on transporting, decaying and converting laws of pollutants in the river and the research on dynamic theory in water composition biochemical transforming, the two dimension steady river water quality model in the dry season has been finally set up. Meanwhile, a program has been compiled with the software VB and Microsoft Excel to deal with data and make it automatic and intuitionistic to compute and simulate.Using the water quality and hydrological data of dry season in 2002, the...