Overview

Overview

The Meva™ Counter Pressure Screw helps reduce disposal costs for sludge screenings through advanced dewatering techniques.

Where disposal of high organics content sludge screenings is not permitted, or only at high cost, advanced dewatering is required to ensure a high dry solids weight of screenings for incineration. The stainless steel Meva™ Counter Pressure Screw can achieve up to 50% reductions in volume and weight of screenings through its patented counter-pressure design.

Further reductions are possible when the system is combined with the Meva™ Screw Wash Press, delivering a product with dry solids content of up to 60%, shredded screenings and a superior washing effect.

Designed for

Sludge
Benefits

Benefits

  • Superior dewatering
  • Major volume and weight reduction
  • Shredded screenings
  • Dry solids contents of up to 60% 
  • Reduced solids handling and disposal costs 
  • Cost savings of up to 80%
How it works

How it works

The combination of Meva™ Counter Pressure Screw and Meva™ Screw Wash Press results in a product with dry solids content of 50-60%, shredded screenings and a superior washing effect.

The Meva Counter Pressure Screw is connected to the Meva Screw Wash Press by a pipe bend. The Meva™ Counter Pressure Screw creates counter pressure during the working cycle of the Screw Wash Press. The counter pressure increases until pre-set Screw Wash Press current consumption is achieved, whereafter the Counter Pressure Screw starts and the Screw Wash Press stops.

In this way, the pressure is continuously adjusted resulting in a maximised dry solids content. The high counter pressure also ensures a long retention time in the press zone, which provides a superior washing effect.

At the discharge of the Counter Pressure Screw the material is shredded, making it optimal for incineration. The unit also works as a conveyor, enabling long vertical conveying distances.

Resources

Resources

Case Studies

Case Studies

FAQs

FAQs