Coal mine drainage sludge and its application for treating metallic mine effluent

摘要

In this study, coal mine drainage sludge (CMDS) impregnated polyurethane granular composite media (PU_(CMDS)) was prepared and used to remove arsenic and other heavy metals in a metallic mine effluent. PU_(CMDS) was used in rapid small-scale column tests to assess the effectiveness and suitability in the application of metallic mine water treatment. As a result in column tests, good performance of PU_(CMDS) was observed with respect to bed volumes (more than 14,000 BVs) achieved to treat arsenic and other toxic heavy metals below their regulations. Three cycles of media regeneration and four cycles of column tests were conducted to evaluate the performance of PU_(CMDS).