The Characteristics Of Groundwater Pollution And Vulnerability Assessment Of Hunhe River Basin Area

In recent years,the groundwater pollution is increasingly serious,the groundwater pollution is directly related to many aspects of the underground water and soil environment and industrial and agricultural production,especially on the premise that the surface water has been polluted seriously,the pollution of groundwater will further increase,so the groundwater control and management should be put in the first place.This paper carried out the research of underground water pollution of the typical area of alluvial-pluvial fan at Hunhe River,and its influence on the evaluation of drinking water sources.The paper has been used the data collection and collation,field investigation,evaluation of antifouling performance of groundwater and groundwater vulnerability assessment in a comprehensive way in order to ensure the safety of water supply in Shenyang City,and promote the sustainable utilization of groundwater resources.This study adopts the field investigation and laboratory research,analysis of the hydrochemical characteristics of groundwater area,and select typical field research,analyzes the influence mechanism of inorganic surface water to groundwater and organic index,and on this basis to carry out groundwater vulnerability assessment and pollution prevention and control division.The main achievements of this paper mainly include the following aspects:The research results of groundwater pollution characteristics show that there are 16 kinds of inorganic super-standard components in groundwater,and the concentration of organic pollutants is generally low and the exceeding standard points are very few.The study area has formed a complex type of polluted groundwater chemical type.The surface water bodies in the research area,such as Hunhe,Xihe and Puhe,have different degrees of pollution and have a certain impact on the quality of near-shore groundwater.The results of comprehensive evaluation of inorganic and organic pollution using the groundwater pollution assessment method showed:(1)The inorganic pollution of groundwater in the study area is heavy,class IV,V and VI accounted for 71.5%.(2)The organic pollution of groundwater in the study area is relatively light,the total number of minor pollution points of class I and II is 140,accounting for 64.2% of the total.In the spatial distribution,the pollution of groundwater is gradually increasing from the piedmont to the plain in the study area.Based on GIS data analysis as the foundation,selects the DRASTIC classic evaluation method for groundwater natural antifouling performance of the quantitative evaluation,results included that the poor antifouling performance distribution,the middle area of antifouling performance and the good antifouling performance area.On that basis,division and prevention of groundwater pollution were carried out,the results includes the important protection area,remediation and protection areas,the key protection area,the general protection area,natural protection areas.