In order to study the characteristic of groundwater pollution and its influencing factors, and make traceability analysis in plating contaminated sites. With an electroplating contaminated site in Guangdong as an example, the authors collected 9 samples of groundwater, and detected 39 indicators to analyze the pollution characteristics and source of groundwater in plating contaminated site. The results showed that: the groundwater of the plating contaminated sites had received the serious pollution, major pollutants were turbidity, pH, total hardness, total dissolved solids, sulfate, chloride, fluoride, nitrite, anionic surfactants, potassium permanganate index, ammonia, cyanide, total α radioactivity, manganese, chromium, nickel, iron. Different sampling point had different pollution degree and types, in which all test indexes exceeded the standard most serious was GW6. Due to the original enterprise management not standardized of waste-water treatment, pipeline leaks and other reasons, resulting in contamination of groundwater, such as GW6 sampling points for illegal sewage near the electroplating enterprises, GW9 located near septic tanks, thus, on-site survey of corporate management, the understanding of site contamination had an important supporting role.
Key words
heavy metal; contaminated sites; groundwater; pollution characteristic; source
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Footnotes
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