sludge dewatering equipment wastewater treatment plant in singapore

sludge dewatering equipment wastewater treatment plant in singapore
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  • What is dewatering sludge?
  • Dewatering is typically the last step before disposal of sludge from secondary treatment and external sources. Sludge volume decreases by removing the water content in order to create a thicker and more manageable mass. Dewatering may also reduce handling costs and minimize leachates and odors at landfills.
  • How is sludge treated?
  • Raw sludge collected from the primary sedimentation tanks and excess activated sludge collected from the secondary treatment process contain a high percentage of water. The water content of the sludge is reduced through a thickening process and the thickened sludge is fed into anaerobic sludge digesters for further treatment.
  • Why is dewatering important?
  • Dewatering may also reduce handling costs and minimize leachates and odors at landfills. After dewatering, the dry solids contents are significantly higher. This may cause high head loss in transporting the sludge for disposal or further treatment. Thickened sludge needs to be pumped downstream, directly to disposal or sludge storage.
  • How does dewatering reduce sludge volume?
  • Sludge volume decreases by removing the water content in order to create a thicker and more manageable mass. Dewatering may also reduce handling costs and minimize leachates and odors at landfills. After dewatering, the dry solids contents are significantly higher.