The oil sludge filter was installed at larger MPD's close to the Engine Shed, usually at the rear for those without a rear traffic entrance.
Sludge, being a mix of oil, water and other minerals that built up in the engine shed pits, was piped to the first filter bed where water filtered through sand leaving glutinous material behind to be craned out. Water entered the second aerobic bed where a biological process breaks down organic contaminants in the water. The pipework is there to facilitate pumping of air into the mass. Water overflowed the weir into the third bed were sediments migrated to the bottom. The water overflowed into a holding bed and via a drain out to the environment.
The model requires a hole, nominally 107 mm x 88 mm x 18 mm, to be cut into the layout baseboard for fitting.
An assembled, authentic model of a Tangye 8 cwt crane associated with this specific filter bed is available as an optional extra only for 'Built to Order' Oil Sludge Filter purchases (not available separately) . The Tangye crane is exclusive to A Model Railway Card Kit Shop) . Other types of manual crane are available from other suppliers.
Oil Sludge Filter kit build skill level: BEGINNER (See Welcome Page for definition).
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