Walnut shell filter is the use of filtration separation principle developed successfully separation equipment, the use of oil-resistant filter material – special walnut shell as a filter medium, the walnut shell with large surface area, strong adsorption, large amount of pollution characteristics, remove the oil and suspended matter in the water.
Filtration, water flow from top to bottom, through the water distributor, filter material layer, water collector, complete filtration. Backwash, the agitator turns the filter material, water bottom up, so that the filter material is thoroughly cleaned and regenerated.