Envar uses in-vessel for BMW

Envar claims to have developed a ground-breaking in-vessel composting technology as part of Defra's new technologies demonstrator programme for municipal waste treatment.

The company claims that in-vessel composting or batch tunnel technology has not been used to treat biodegradable municipal waste (BMW) in the UK before - the organic component of black-bag household waste.

The in-vessel system works by incubating organic waste at very high temperatures within a double-ended tunnel structure, which undergoes feedback monitoring as its converted from BMW to treated, reuseable material.

The tunnel is equipped with heated walls and floor to minimise the risk of cold spots. The end-product can be used as a soil conditioner in agriculture and for land restoration, and research is under way into its use as a refuse-derived fuel.

Patrick Pierrepont, Envar's business manager, says: "If the scheme is approved and rolled out later this year, the technology could cut the UK's annual waste mountain in half, and provide an immediate, sustainable and cost-effective solution to the waste problem."

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Waste & resource management

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