Output details

Clogging of landfill tyre and aggregate drainage layers by methanogenic leachate and implications for practice

Significance of output:

There has long been a difference of opinion concerning the influence of landfill operational regime on the susceptibility of drainage systems to clogging. This paper explains that discrepancy on the basis of acidogenic or methanogenic leachate and makes recommendations on feasible changes to landfilling operational practice leading to only methanogenic leachate with its lower clogging potential reaching drainage layers.

The WRAP funded research also demonstrates the suitability of tyre-derived aggregate substitutes for landfill drainage systems and has led to the prevention of at least 300,000 tonnes of virgin aggregates over a ten year period (David Parkes, intowaste Ltd).