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  • Recycling sludge

    A valuable by-product of sewage treatment, we treat sludge to a high standard by adding lime or through anaerobic digestion. We already recycle 100% of sludge to farmland.

    This treatment helps to stabilise the sludge, reduce odours and remove pathogens so that it is suitable for recycling to farmland. This is carried out under strict regulations and we consistently achieve 100% compliance. 

    In addition to nutrients, sludge has a calorific value. Anaerobic digestion converts the organic matter into biogas which can be used to generate renewable electricity.  

    Around 64% of the sludge we treat is digested; this will increase as we make improvements to digestion sites and reduce lime treatment.  

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