Water Environmental Quality Evaluation And Modeling Of Solute Transport Of Piedmont Alluvial-Pluvial Plain At Lang Shan In Ba Yan Nur City

As a part of natural resources, water is the important foundation of human existence and development, and also it is an important guarantee for the harmonious development between human and nature. With the continuous development of economic, water pollution are obvious gradually, water has become a"Bottleneck"which restricts the development.The piedmont alluvial-pluvial fan of Lang Shan of Yellow River Basin in Ba Yan Nur City is human drinking water source planning, water quality is directly connected with the drinking safety for millions of people. Supported by technology project of Inner Mongolia Autonomous Region-water resource response and regulation under the changing environment, using BP neural network and LVQ, combining with traditional water quality evaluation method and VISUAL MODFLOW on the basis of summary and absorption previous results, ground water quality and pollutant transport is researched on deeper level in the region.First, By analyzing the forming factors of groundwater chemical types, the distribution range and the cause for the formation of the fresh water, brackish water, salt water are confirmed. Secondly, using index evaluation, fuzzy mathematics method, grey theory, BP neural network and LVQ, water quality situation evaluation of study area is realized, and then the evaluation method that is most suitable for study area is found out by carrying on the contrast analysis to the evaluation results. Finally, by simulating the major pollutants transport of the typical fan used VISUAL MODFLOW, master pollutant migration law and analyse the formation machannism of pollutant.Water environmental quality evaluation and simulation prediction is the basic research and key application of water environmental pollution, water environmental quality is directly related to human health. Water pollutant migration mechanism is felt out by combining water environmental quality evaluation and water pollutant transport simulation, thus making the preventive measures to water pollution. Nowadays, the transport dispersion law of pollutant in ground water has gradually become the focus of domestic and foreign scholars. At last, the paper summaries the research contents and the achievements, summarize the deficiency and discusses the problems which should be further researched.