DESIGN AND INSTALLATION OF A HYDROCARBON REMOVAL SEPARATOR FOR INDUSTRIAL STORM RUNOFF
Kirby S. Mohr, P.E.
Mohr Separations Research, Inc.
Lewisville, TX 75077
Adam La Rusic, P.Eng
Project Engineer, Morrow Engineering, Ltd.
A paper presented at the British Columbia Water and Waste Association in Whistler, BC, Canada, 1998
A new stormwater collection and treatment system was installed at Vancouver Wharves in 1997 to process surface runoff from approximately 25000 M2 of yard area. The proposed construction of a new building at the site necessitated the removal of the previous oil-water separator. Morrow Engineering, Ltd. was asked to design a stormwater collection and treatment system to discharge effluent water within permitted levels. A number of factors had to be considered, including the influx of detergents from vehicle washing areas, high concentrations of various solids, and sewer flood conditions resulting from the proximity of tidally-influenced waters. The new system included a redesign of the stormwater collection system and a new oil-water separator utilizing multiple angle coalescing plates for high efficiency removal of oil in the water, while shedding solids to the bottom of the separator.