Removal of Solid Impurities from Coal Gasification Wastewater by Sand Filtration

Coal gasification wastewater has complex pollutant components and high COD value, contains a variety of toxic harmful substances. The treatment coal always been one the important problems in development industry China. In this paper, aiming at removal fine particle pollution wastewater, sand filtration method was used to explore changes parameters such as solid content removal, separation accuracy, grade efficiency under conditions separating different bed thicknesses. With method, pollutants can be effectively removed by more than 95%, accuracy reach 0.46 μm. operation are optimized for further industrial application.