How an HRS 3-Tank pasteurising unit works The digestate is treated between the main digester and storage. The use of a three-tank system means that while one tank is being heated and pasteurised, another is being emptied and the third is being lled. This results in a continuous operation. Once treated the digestate fertiliser is separated into liquid and solid fractions before being applied to the farms’ elds using a number of techniques, such as injection and spreading of the solid fraction, where it acts as a valuable source of organic nutrients. Solution Fed with a mixture of materials, including arable and root crops, such as potatoes, carrots, parsnips and sugar beet sourced from the six farms, the HRS 3-Tank Batch Sludge Pasteuriser: Kills potential crop pathogens. Reduces the viab

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