Energy from Wastewater Unlocking the Energy in Sludge

    Kleiven, H.

    IWA Resource Recovery Conference 2025, resource in water magazine

    Introduction

    Globally, about 45 million metric tons of dry solids are produced annually. Sludge and biosolids hold the potential to be transformed into fuel, fertiliser, or other marketable products, while management costs for sludge and biosolids range between 30-50% of a wastewater treatment plant’s OPEX. Under these imperatives, wastewater treatment is rapidly evolving into a circular economy engine, and among the pioneers in this space is Cambi, a Norwegian technology company known globally for its thermal hydrolysis process (THP).
     
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