Month: September 1998
Low footprint effluent treatment
The design of Singapore's Kranji STW provides the solution to many of the future challenges facing urban planners - as the demand for land for residential and commercial development increases, consultants and contractors can no longer assume that there will be large open areas to provide buffer zones for odours, and space for conventional treatment facilities. David Fullerton and James Currie of Binnie Black & Veatch report on the approach taken at Kranji where new primary settlement tanks, aeration tanks and final clarifiers occupy a footprint approximately a third of that of the existing activated sludge plant.
Burning and burying – dealing with sludge
Sludge treatment and disposal has recently been a common discussion subject especially with only three months before the disposal of sludge to sea is banned and recent talks with retailers on what treatment is safe. Gary Wilson examines some of the issues concerning sludge treatment and disposal and what the industry is doing to deal with them.
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