F0002-AA007595-AAR-10-SMP · MCU14/0102.05

            2.1        Components

            The Puraceptor Class 1 is a gravity-type, passive, full retention flow system that treats all flows through two
            chambers. Low velocity laminar flow provides quiescent conditions in the separator enabling the light liquid
            content of the water to separate and rise to the surface due to the difference in density of the hydrocarbons
            and water. Contaminated water cannot flow directly across the surface before effective separation has taken
            place. Treatment process involves the `cleaner` water passing from the primary chamber by underflow into the
            secondary chamber and finally through a coalescing filter mounted in the secondary chamber to `collect` smaller
            droplets of hydrocarbons and encourage larger droplets to form enabling better removal by gravity to the
            collecting area in the sealed secondary chamber. The SPEL Puraceptor is sized to treat and capture all flows.
            There is no bypass facility, meaning all pollutants are captured and retained between maintenance cycles. Figure
            1 illustrates a sectional view of the SPEL Puraceptor and its components.




                                           Figure 1. SPEL Puraceptor and its major components

            2.1.1      Coalescing Filter
            The coalescer is a high-reticulated and high-contact surface filter with a minimum life span of eight years. It is
            mounted into the secondary chamber, providing a coalescing process for the separation of smaller oil droplets.
            Incorporated in the secondary chamber prevents the coalescer from being blocked in the event of major
            spillages and large amounts of accumulated hydrocarbon or heavy silt content in the surface water.

            SPEL Coalescer Units Guide Rail System/Lifting, Locating and Locking System
            This facilitates easy insertion and removal of coalescer unit. The system is robust, manufactured throughout in
            stainless steel and is action positive, leaving no doubt the coalescer unit is located properly. Brackets fixed to
            the top and bottom of the coalescer unit simply engage the stainless steel guide rail fixed to the top of the stub
            access shaft.




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