The Research Of Groundwater Pollution And Antifouling Performance In YiLi Valley Of Xinjiang Autonomous

Yili Valley of Xinjiang Autonomous is adjacent to Kazakhstan to the west. It has the biggest treaty port of C hina—Khorgas. And Yili Valley is the main production base of Xinjiang producing grain, oil, sugar and meat, so it plays an important role in national economy. It has abundant rainfa ll in the area, but because of intensive evaporation, inequality in the distribution, and along with crisscrossed season rivers, the groundwater is still the major source of production and living. The agriculture and animal husbandry are quite developed, their pollution are more serious. Therefore, the research of groundwater pollution and antifouling performance has important theoretical significance and practical value, to understand the present situation of groundwater quality, pollution, effective preve ntion and control of groundwater pollution, ensure the safety of drinking water, etc.This paper is based on the research of groundwater circulation evolution mechanism and pollution prevention and control in Yi Li River valley of Xinjiang from C hina Geological Survey Bureau. Taking the shallow groundwater of Yi Li River valley as the object, this paper evaluated the groundwater quality in the research area and the present situation of pollution, analysised the exceeding components of water quality, the distribution of the pollution and the reason for pollution, studied the antifouling performance of groundwater systematically, by comprehensive utilization of the test results of samples and the material of groundwater pollution survey obtained, to provide a basis for utilization and protection of groundwater resources.Based on the test results of 77 groundwater samples collected in the survey, using the single indicators evaluation method, F value evaluation method and modified Nemerow index to evaluate the quality of groundwater. The results of single indicators evaluation method show that the over standard of Na+、Mg2+、SO42-、Total Hardness(TH) and Total Dissolved Solids(TDS) is the main factor which affected the quality of groundwater. The comprehensive exceeding rate of F value evaluation method is 35.06%. The comprehensive exceeding rate of modified Nemerow index is 10.39%。It shows that the water quality in this area is overall well and exceeding sample point distribution is closely related to human activitiesThe groundwater background value was ascertained by Grubbs a nd Shapiro-Wilk test method. Single factor standard index and comprehensive evaluation were used for analyzing the underground water pollution states. The result showed that the groundwater of the research area was no pollution, light pollution and moderate pollution in the main. Moderate pollution and heavy pollution are mainly concentrated in two areas: from Xin Yuan county to Gong Liu county, both sides of Yi Li river between Yi N ing city and Cha Bu C ha Er county, And with the distribution of the main pollution sources are basically identical. The pollution class of SO42-、NO3-、TH and TDS, which were the main indexes resulting of pollution. NO3- exceeding is due to human activity and livestock feces ground water that caused pollution.In combination with hydrogeological characteristics in the research area and GIS software, using DRASTIC method, the antifouling performance of groundwater in the research area was studied. The results showed that the antifouling performance of most research area is good, 38.88% of the groundwater protection conditions in general.Although the industry is not developed in the research area, agriculture and animal husbandry are developed. Residents concentrated relatively, the common p Henomenon was that living garbage was piled casually, increasing the likelihood of groundwater pollution, so it should be given attention, strengthen res idents’ Protection Consciousness.