Metso introduces new sludge dewatering solution

Metso has introduced the Metso SDO (sludge dewatering optimiser), a complete advanced optimising solution for sludge dewatering at wastewater treatment plants.

The technology allows wastewater plant operators to improve sludge dewatering performance by up to 50%, significantly reduce chemical consumption and optimise efficiency. Automating the dewatering process also reduces laboratory sampling, produces 24/7 real-time data and decreases the continuous need for monitoring.

Using multi-variable model predictive control (MPC), Metso SDO utilises measurements to control polymer dosing and centrifuge torque.

Multi-variable MPC is unique to Metso’s SDO and is essential for centrifuge optimisation, since centrifuge control is a non-linear process system.

Metso measurements and automation product manager Heli Karaila said that advanced Metso SDO technology makes it possible to achieve the best performance in an existing sludge dewatering process.

"Through optimisation, wastewater treatment plants are able to improve sludge dewatering unit performance by up to 50% and reduce the consumption of chemicals used in dewatering by 50%," Karaila added.

Metso SDO can be integrated into most automation systems via the Metso DNA automation system. It can be installed on one sludge dewatering unit or an entire sludge dewatering unit installation.

The optimising solution is modular and can be used either with Metso Low Solids Measurement (Metso LS), or Metso Total Solids Transmitter (Metso TS).

The Metso LS is based on LED and laser technology while Metso TS is based on microwave technology.