landiaworld.com ENGINEERED TO LAST No. 343 – Pumps Biogas Plant Grit Removal System Extracts Digester Grit and Silt from AD Plants By Stephen Last | 04-02-2017 Ever since the first of the current generation of anaerobic digestion plants were commissioned over 15 years ago, a recurrent problem has been the gradual accumulation of inert materials in digester tanks. If it gets into digesters it reduces the reactive volume and gradually builds-up over time, reducing biogas plant efficiency. For some biogas plant operators, the only solution has been to pump out their tanks, and start again. Doing that means a lot of wasted time and revenue. It takes time to remove large quantities of silt, sand, and grit, and re-commission AD plants. This represents a lot of lost biogas producti

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