Study On Delineation Of Drinking Water Wellhead Protection Zone In Sediment-laden River

The current water pollution problem is particularly serious, so it is urgent to protect drinking water sources. The establishment of effective of water source protection areas is centralized water supply sources to ensure an effective mean of continuous water supply. Regarding determining drinking water and ground water protection zones division and demarcation, HJ/T338-2007 was merely quota qualitative and quantitative classification of river-type water block piecemeal protect the land classification methods, and principled explain the demarcation of protected areas and coastal protected areas on both sides of the distribution of industrial and agricultural pollution sources and tributaries. However, it is not just limited to this to truly protect the water quality, this specification should be provided for the basic model refinement based on actual rivers. Choose the suitable method of the division of river researched to calculate.This study was to analyze the river - sediment - the main pollutants of pollutant system processes the physical chemical and biological contaminants and migration of water, based on pollutant transfers diffusion equations, the natural attributes of rivers and sediment pollutant adsorption are reasonable generalized, describing the source of dissolved contaminants is derived, a number of pollutants in the river sediment transport model is established .Based on the model, according to (HJ/T338-2007), using multi-objective function of environmental planning principles and methods, considering the social, environmental and economic factors, establishing the economic costs of environmental effects analysis of the objective function, considering the boundary control of the concentration of water conservation and pollutant transformation relations to construct sediment-laden river water source protection areas classified model optimization. By solving the model, obtain the protectorate water scope and the rivers between the typical pollutant density best relations combination of GB3838 -2002 water quality standards, obtain inverse wellhead protection area boundary waters. In addition, divided by the analysis of terrestrial protected areas, then methods of delineating land area were proposed.The study showed the impact of sediment on the transport of pollutants must be paid attention to when sediment-laden rivers and drinking water source protection zoning timeshare; it was more match with actual that multi-silt rivers pollutant transport model relatively brief which formatted by taking the pollutant transport theory as the foundation; then under the foundation of this model, we used the most optimized principle as well as considering the entire protectorate region environment economic development and the environment price, so optimized protectorate division model was established which has strong superiority; perfect scientific nature and the efficiency was manifested according to anglicizing actual example and confirmation models which result tallied with the reality basically.The research synthesized application environmental science, study of environmental water resources project and econology which was not only having rammed the rationale, but also the methods stated having strong scientific rationality and actual operation.