... 01.53.0Usesa, Urban water supply and drainage purification: river water, reservoir water, groundwater.b, industrial water purificationc, urban sewage treatmentd ... the settlement of coal in coal-washing waste water, starch manufacturing industry Starch recovery. e,a ... and dyeing wastewater, leather waste water, fluorine-containing waste water, heavy metals, waste water, oily waste, paper waste, coal ...