Coal mine wastewater
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The content of CODcr and SS in coal mine water is high, and these SS are mainly composed of small particles such as coal chips, rock powder, clay, and especially coal powder, with a content of tens to hundreds of milligrams per liter. Moreover, coal powder can be oxidized by strong oxides such as potassium dichromate, indicating a high concentration of COD. Due to pollution from coal, waste engine oil, emulsified oil, etc., there is also a certain amount of oil in the mine water.The picture shows the traditional inclined tube sedimentation treatment process:
The use of ceramic flat membrane MBR system can effectively remove COD in coal mine wastewater through biodegradation and membrane interception, effectively removing oil, NH3-N, Cr6+, Pb, As, etc. in the wastewater. This system can fully meet the needs of wastewater treatment.
The combination process of ceramic flat membrane for treating coal mine wastewater is shown in the figure:
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