Apparatus for removing noxious contaminants from drainage water

Claim 1

In an apparatus for separating floating and non-floating particulate from drain water, of the type having: (a) a tank for separating particulate; (b) an inlet for introducing water drainage; (c) a bulkhead substantially cylindrical containment wall for containing non-floating particulate under relatively higher drain water flow rates and under relatively low drain water flow rates, wherein a design of said containment wall induces a swirling of said drain water within said tank; (d) a baffle for containing floating particulate under said relatively higher drain water flow rates and under said relatively lower drain water flow rates; (e) an outlet; (f) an orifice plate for controlling drain water level within said tank as a function of the rate of discharge of said drain water under said relatively lower drain water flow rates; and (g) a weir plate for controlling said drain water level as a function of the rate of discharge of said drain water under said relatively higher drain water flow rates such that said drain water level within said tank is greater than a level of said inlet; THE IMPROVEMENT enabling removal of oily and of slightly soluble organic contaminants also contained in said drain water, comprising: a fluid-previous media being provided at the interior of said apparatus in or abounding the flow path of the drain water proceeding between said inlet and outlet, said media being infused with a composition comprising a homogeneous thermal reaction product of an oil component selected from the group consisting of glycerides, fatty acids, alkenes, and alkynes, with a methacrylate or acrylate polymer component; the said contaminants in the drain water flowing through said apparatus thereby coming into intimate contact with and being immobilized at said media.