Sludge treatment

As a supplier of total solutions. AQUA Industrial Watertreatment delivers not only water treatment systems but also sludge treatment solutions.

Sludge Digestion

Anaerobic digestion (CSTR)
Pre-treatment sludge, with often a very high fat content is pumped in to a fully closed tank. The sludge is continuously stirred and will have a retention time of 20 – 40 days. It is converted, under anaerobic conditions, into a completely stabilised sludge suitable for use as compost. An advantage of this system is that biogas is produced. Depending on the amounts of methane gas, a CHP unit can be powered.
Aerobic digestion (ASR)
Pre-treatment sludge, with often a very high fat content is pumped in to an aerated tank. This tank, with a unique aeration system will convert the fatty sludge into a completely stabilised bio-sludge which is suitable for use as compost.
This system has been developed by Carbofil in France.

Belt Filter Press
Water is pressed out of the sludge by two filter belts and often preceded by an initial pre-dewatering belt. The belts are cleaned continuously during operation of the unit and therefore do not influence the up-time of the press.
Decanter Centrifuge
In a decanter centrifuge, the water is extracted from the sludge by applying a (centrifugal) pressure that is 4100 times higher than gravity. This results in a high degree of dry solids.
Chamber Filter Press