Valmet Sludge Dewatering Optimizer (Valmet SDO) allows wastewater treatment plants to improve the control of its sludge dewatering process. With Valmet SDO the operators can minimize the solids amount in the centrate, while maximizing the solids content in the dry cake. With Valmet SDO a great deal of savings in the polymer usage and energy spending can be obtained, while continuously providing real time data. The transportation costs are lower when the dry cake solids are higher, as well as needing less support fuel at the incineration plant.
Valmet SDO applies inputs from solids and centrifuge measurements to optimize the dewatering process. Valmet Total Solids Measurement offers measurements for feed solids and dry cake percent solids and Valmet Low Solids Measurement gives accurate centrate suspended solids measurements. While the Valmet Dry Solids Measurement provides continuous reliable measurements of dry solids.
With key data, Valmet SDO utilizes a multi-variable model predictive control (MPC) to control polymer dosing and centrifuge torque. The multi-variable MPC is unique to Valmet SDO and is an essential component for centrifuge optimization, as centrifuge control is a non-linear process.
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