Patent ID: 6171853
Filing Date: 2001-01-09
Classification: B01D,Y02A

Abstract:
Apparatus for removing pollutants from air emissions, comprising:(a) a housing defining a single chamber having a lower portion containing a liquid;(b) means for supplying air emissions to be treated to an upper portion of said chamber;(c) biomass filter means arranged within said chamber for treating pollutants within the air emissions, said filter means comprising a unitary filter element formed of a sponge-type foam material having a biomass thereon for growing biofilm and microorganism when said material is exposed to liquid and nutrients and having a cylindrical configuration with a horizontal axis; and(d) means for rotating said filter element about said axis and through said upper and lower portions of said chamber, whereby when said filter element is in said chamber upper portion, it withdraws pollutants from the air emissions, and when said filter element is in said chamber lower portion, it receives moisture and nutrients from and releases pollutants into said liquid.