Company ProfileCase Study: Refuse Compost Leachate—Singapore
The Problem
A compost site was discharging leachate into a sewer that did not meet the standards of acceptance for the discharge of trade effluent set by the Pollution Control Department of the Ministry of the Environment, Singapore. This is often a problem because of the high strength of the liquor produced by compost. The BOD can easily exceed 20,000 mg/l.
The EversTech Solution
However, through the use of the latest technology in Process Engineering and the incorporation of specific bio-culture formulations specially developed for rapid and efficient digestion and breakdown of the organic compounds contained in compost leachate, EversTech was able to offer the ET Process with confidence as a successful solution, both technically and economically, to the leachate problem. Please see the "Processes" section of this website for specific information about the ET process.
Financial and Environmental Benefits
The plant produced an effluent suitable for discharge to the sewer, and a biomass sludge with an N:P:K value of approximately 8%:4%:2%, which is sold to the Singapore Parks Department and Golf Courses as an organic surface dressing and fertilizer.
Capital Cost of ET Process Plant—£300,000
Operating costs—£50,000/yr
Savings on Sewer Charges—£180,000/yr
Value of Compost—£300,000/yr
Net benefit—£430,000/yr