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CORRUGATED PLATE SEPARATOR (CPS) Basic design of the Corrugated Plate ADJUSTABLE BUCKET Separator for high solids load applications is WATER LEVEL OIL WEIR illustrated at right. When wastewater enters the CPS through receiving compartment A, its — OIL LAVER velocity is slowed to less than one foot oer second. EFFLUENT WEIR This permits gross solids to settle out in the sand EFFLUENT TROUGH t R R SEPARATOR storage area and large oil globules to float to the EFFLUENTr COMPARTMENT surface. The influent then enters separator OUTLET PIPE 1 r r t RECEIVING compartment B. OIL OUTLETq COMPARTMENT After passing through a quiescent zone, EFFLUENT . 1 (A) wastewater enters the Corrugated Plate COMPARTMENT t � MIFLUENLY TER Interceptor (CPI) plate pack. Here the finer oil (c) I QIP droplets and sludge are separated by gravity.The de-oiled wastewater flows into effluent t compartment C and rises toward the outlet pipe. Both the separator compartment B and effluent compartment C are provided with a skim t' 1\ :i+ :r:C:?-:x;:;•`•: pipe, or weir. Height is adjusted to balance the SLUDGE SAND TRAP hydraulic loads so that only oil can be skimmed off COMPARTMENT the surface.An oil layer is maintained in the inter- NOTE:General arrangement of the low solids ceptor,with oil discharged automatically into the unit Is shown on the front cover of this bulletin. skimmer due to the difference in the specific gravity of oil and water. CORRUGATEDPLATE glass aorrosfonn resistance. polyester resin for The CPI pack is installed in the tank so INTERCEPTOR (CPI) that the plates are at an angle of 45° to the horizontal, in the flow direction of the waste- water. Additional packs may be installed to i — handle the requirements of any size system. Before water containing oil enters the pack, its velocity has been slowed in the inlet t channel. As the waste stream passes through the pack, its flow rate is controlled to maintain laminar conditions.The plates are designed so that oil,as it separates from water,migrates to the underside of the next plate above.Then,by gravity,it migrates toward the inlet of the plate pack counter to the water flow.Sludge settles to the top of the next lower plate and collects in the valleys of the corrugations,sliding down by gravity toward the outlet at the bottom of the At the heart of the Corrugated Plate unit, in the same direction as the water flow. Separator is the CPI plate pack.The standard The peaks of the corrugations at the inlet plate pack consists of 47 corrugated sheets,or are connected by vertical gutters, or risers, plates, stacked in parallel at 3/4" intervals. which guide the collected dil out of the flow Overall dimensions are 38" high by 42" wide area of the wastewater.The same riser system and 69"long,with a horizontally projected area is provided on the valleys of the plate pack of approximately 550 square feet. Both the outlet for sludge disposal.Gutters prevent the plates and the molded housing are made from re-entrainment of oil or sludge.