... capacity:500-20000 L/H 3.For pure water product Installation: Raw water pump +quarts sand filter + active ... sand filters, main purpose is to remove the water contains sediment, manganese, rust, colloid material, ... of the main process in the preparation of pure water is an indispensable process. 1.2 Second ... , adsorption of residual chlorine in the water, using water more than less than or equal to ...