SUEZ Water - Water Technologies & Water

Dewatering

Boosted sludge dewatering with a piston press

The Dehydris* Twist unit is based on the Bucher Unipektin piston press, which is fed with drinking water sludge or pre-thickened wastewater sludge conditioned with reagents (polymers possibly mixed with mineral reagents).

The press, equipped with semi-solid drainage elements, operates in cycles (from 2 to 3 hours). The length of the cycle depends on the type of sludge and efficiency required (dryness or flow rate). Each cycle is made up of three, entirely automated, main phases:

 

Dewatering

Boosted sludge dewatering with a piston press

The Dehydris* Twist unit is based on the Bucher Unipektin piston press, which is fed with drinking water sludge or pre-thickened wastewater sludge conditioned with reagents (polymers possibly mixed with mineral reagents).

The press, equipped with semi-solid drainage elements, operates in cycles (from 2 to 3 hours). The length of the cycle depends on the type of sludge and efficiency required (dryness or flow rate). Each cycle is made up of three, entirely automated, main phases:

 

Dewatering Features

  • SAVINGS - increased productivity with a possibility of non-stop operation (24/7) without the need of a staff presence, smaller foot-print than a filter press.
  • HIGH PERFORMANCE – high dry content obtained without the addition of lime: up to 40% for drinking water sludge and auto-thermicity achieved for urban wastewater sludge, versatile: accepts both drinking water and wastewater sludge (mixed sludge, fresh, digested, thickened or primary).
  • SIMPLE AND EASY OPERATION – enclosed and ergonomic industrial process 100% automatic operation including emptying.
  • REDUCED SLUDGE BULK – up to 30% reduction in sludge bulk compared to conventional dewatering.

*A trademark of SUEZ. May be registered in one or more countries.