The Pollution Characteristics Analysis of Groundwater in Sanjiao Area Hedong Coalfield

The groundwater pollution is an increasingly serious problem in the world. There are abundant coal resources and coalbed methane resources in Sanjiao area, Hedong Coalfield. The exploitation of mineral resources has a pernicious influence on the local groundwater environment. The local shallow groundwater is the only drinking water source for local residents. So the analysis of the groundwater pollution characteristics is essential for maintaining drinking water safe for local residents. The results showed that NH₄⁺, Cl^-, SO₄^2-, NO₃^-, F^-, NO^2-, Cr⁶⁺, Fe, TDS, etc. have exceeded to varying degrees. The amount of methane in SX99 is very high, so it should take measures to release methane to reduce the methane concentration in groundwater.