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Biosolids

Belt Filter Press

Belt filter presses are used to remove water fromliquid wastewater residuals and produce a non-liquid material referred to as “cake”. Dewatered residuals, or cake, vary in consistency from that of custard to moist soil. Dewatering serves the following purposes:

  • Reducing the volume, thus reducing storage and transportation costs.
  • Eliminating free liquids before landfill disposal.
  • Reducing fuel requirements if residuals are to be incinerated or dried.
  • Producing a material which will have sufficient void space and volatile solids for composting when blended with a bulking agent.
  • Avoiding the potential of biosolids pooling and runoff associated with liquid land application.
  • Optimizing subsequent processes such as thermal drying.