Success claimed for co-composting of waste with sewage sludge

A commercial plant to compost municipal waste with sewage sludge may soon become a reality following the success of a demonstration project in south-west England. But the lack of any quality standards for composts may restrict the product to the lowest value end-uses and could deter investment in a large-scale facility.

The COWS co-composting project began at Chelson Meadow in Plymouth last August. Its aim was to determine the most cost-effective large-scale method of producing "safe" compost. The quality of compost produced from organic household waste which has been separated at source has already been proven (ENDS Report 218, pp 15-18 

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