Patent ID: 9017550
Filing Date: 2015-04-28
Classification: C02F,E03F

Abstract:
1. An exfiltration apparatus for removing contaminants from a fluid, the apparatus comprising: a housing defining a fluid flow path; a first filter/sorptive layer positioned within a first portion of the housing; a layer of filtration media positioned within a second portion of the housing; a container disposed within the layer of filtration media, thereby separating an upper portion of the layer of filtration media from a lower portion of the layer of filtration media; and a second filter/sorptive layer disposed within the container, wherein the container includes a plurality of flow openings; wherein fluid flowing along the fluid flow path passes through the first filter/sorptive layer, through the upper portion of the layer of filtration media, and through the second filter/sorptive layer within the container before passing through the lower portion of the layer of filtration media and exiting the housing.