... not included, non-toxic, harmless, safe.4, turbidity remove, decolorization, oil off, dehydration, sterilization, deodorant, algal removal, remove the COD,BOD ... plant effluent1:3000-1:10000Power plant effluent1:10000-1:30000Oil drilling effluent1:3000-1:10000Coal washery effluent1:10000-1:30000Paint making ...