Sludge treatment techniques used, depend on the final use of the sludge. So sludge treatment can reduce its water content, stabilise the organic matter present in the sludge or even make it hygienic.
NANTAISE DES EAUX INGÉNIERIE offers different procedures for reducing the sludge volume :

Non mechanical

• Static thickener
• Storage tank
• Drying beds
• Drying beds with reeds

Mechanical

• Thickener with scraper
• Thickening filter belt
• Drying filter belt
• Centrifuge with or without lime mixing system
• Plate filter press
• Solar drying with or without heating floor