Multi-layer Filter Block was recognized a revolutionary coalescing media which can separate oil from water containing suspended particulate.Large surface area makes it very suitable as a biological support media.Each layer’s densely pore distribution and layers’ interlocking will promote small oil free molecular rapidly contacts with lipophilic surface, finally form a big oil droplet.it will large shorten oil & water separating time.The vertical rod’s distribution on the bottom of each layer will speed up oil & water fall off quickly and not create any blocking.Above special design make Multi-layer Filter Block becomes a kind of ideal carrier used in odor-control scrubbers & oil-water separators.