The Pollution Characteristics Of Groundwater And Analysis On Pollution Sources In JiangXi Industrial Park

Industrialization is the engine of a regional economic growth.lt has already become a man force of promoting economic development for Jiang Xi.Although economic benefits with industry developing is remarkable,the "three wastes" with unreasonable emission leads to the yield reduction of its surrounding fertile farmland and even abandoned.lt causes soil and groundwater pollution and drinking water by nearby residents harms from it.This study choosed the surrounding of of Jiang Xi' industrial park as the research object,using the fields data to analyze differences in major ions and heavy metals concentrations in the water bodies.Piper diagram,Gibbs and ion ratios were used to analyze the origin of groundwater.The sources and influencing factors of hydrochemistry and heavy metals in groundwater were conducted further analysis by multivariate statistical methods.According to the study,it mainly obtained the followings:(1)The study found the values of pH,Eh,DOand EC(electrical conductivity)in groundwater had larger fluctuationThe contents of Cl-,NH4+,TDS and Total hardness in industrial wastewater and groundwater was higher than the sanitary standard f'or drinking water in life(GB5749-2006),existing heavily polluted.The maximum concentrations of CP,TDS and Total hardness were tested in sewage outfall,reducing the values of the corresponding concentrations of groundwater away from the sewage outfall.Difference in the spatial distribution of NH4+ was quite obvious,with the high concentration in sewage outfall and in the groundwater away from the sewage.In addition to presencing Al,Fe,Mn,Zn and Pb polluted,industrial waste also existed Cu,Cr contaminated and As was over standard in the groundwater.the pollution was serious.Differences in the spatial distribution of heavy metals was larger,due to sensitive to external factors.(2)The primary hydrochemical type was HCO3-Ca·Mg(Na)except for Cl-Ca·Mg(Na)in the study area.Gibbs and ions ratios were seen that groundwater components in the study area was mainly controlled by rock weathering,precipitation,weak evaporation and cation exchange.The distribution of Cl-and SO42-/Cl-,Cl-and NO3-/Cl-indicated groundwater was polluted by industrial wastewater infiltration.(3)The analysis results of multivariate statistical analysis indicated hydrochemistry components and heavy metals derived from both natural processes and external pollution,sources.Mineral dissolved,cation exchange,acidity-alkalinity and redox in groundwater affected hydrochemistry components;The external pollution sources included industrial effluents,domestic sewage,agricultural fertilizers.Heavy metals pollutants in the groundwater were from the continuous infiltration of industrial wastewater and the intermittent infiltration of surface wastewater(domestic sewage,agricultural fertilizer).The density distribution of heavy metals were controlled by redox,soil eluviation and overlying cohesive soil adsorption.