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The Three Star exceLS bandscreen can offer through put up to
750LS and is based on the successful Three Star Double flow bandscreen.
Screening is achieved by passing the sewage through a vertical
band shaped screen curtain, comprising an assembly of plastic
perforated panels, clipped and fastened into stainless steel frames
which are positively fastened to stainless steel conveyor chains
that form two endless loops.
The screenings enter the inside of the screen curtain where solids
are retained and transported out of the flow by driving the band,
moving the dirty panels from the screening zone to the panel cleansing
area.
A stainless steel frame supports the screen curtain. Stainless
steel plates and plastic guide blocks are used to achieve a close
running seal in submerged areas between the screen curtain support
structure and the panel assembly.
The band is sprocket driven via a motor and gearbox. A spray
bar fed by final or primary effluent is used to clean dirty panels
before the panels are re-submerged. The cleaning system is
orientated to achieve full panel cleaning whilst depositing all
debris in the internal launder system, which feeds out through
the side of the screen.
Alternatively the exceLS bandscreen can utilize the Three Star
STAR wash to provide an integral screenings removal, washing and
compaction system.
The screen is almost entirely constructed from 304 grade stainless
steel as standard with options available in carbon steel, and
grade 316 to allow installation in saline environments such as
coastal works if required.
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