Sludge Dewatering
We provide sensors for a complete insight into your sludge dewatering process by measuring sludge concentration, monitoring filtrate/centrate quality (TSS and residual polymers) and Dry Solids (%DS) in dry cake.
Sludge dewatering is an energy intensive process, that removes water from sludge in order to reduce volume and weight for further treatment (or disposal). No matter what dewatering methods are used, finetuning the process minimise both the economic and environmental cost.
Full monitoring of the dewatering process
Dewatering is performed using a wide variety of technologies. We often see:
Centrifuges
Belt filter presses
Screw presses
Gravitational thickening
"Most dewatering processes are only partially monitored, or are not monitored at all. Important reasons are the economic cost (both CAPEX and OPEX, providing a low ROI) and high mainenance requirements. Thanks to the innovative OLPAS measurement technology and the Olpas sensors, monitoring of the dewatering process is now an option for all installations."
Olpas has multiple sensors available for a complete monitoring. Not all of these are required! Even one or two sensors you can trust on, are enough to provide massive gains in efficiency.
Monitoring Sludge inlet
Centrate Monitoring: Total Suspended Solids (TSS) in centrate
Residual polymers in centrate (Actually: Polyelektrolyte (PE), Polymers, Flocculant or Coagulant in low concentrations)
Sludge Cake (DS% in dry cake)
PCM (Polymer Concentration Measurement*) at polymer dilution & activation
For usage in other sludges (eg. iron water sludge), monitoring solutions are available that can be installed inline or free hanging in a gravity thickening bassin.
Keep an eye on the dewatering efficiency and dosing effectiveness by measuring solids and polymers during different stages of sludge dewatering.
Applications in this field
Centrate / filtrate monitoring
Monitoring centrate is crucial for optimizing the dewatering process. The specially designed Olpas sensors have a superior fouling resistance, measure in the most dirty circumstances (even when high loads of TSS and PE are present) and can compensate for air bubbles present in centrate.
Available Products
Number of selected Products:
10
OTD-SDPB
TSS in dewatering centrate (with centrate pump and flowcell)
An easy to install end-to-end measurement solution with limited impact of air-bubbles and exceptional fouling resistance thanks to ultrasound measurement technology. For measuring TSS in concentrations from 0 - 2.000 mg/L.
The device consists of a sample grabber (centrate pump) and flow-cell.
OTD-SDPC
Residual Polymers in dewatering centrate (with centrate pump and flowcell)
An easy to install end-to-end measurement solution with limited impact of air-bubbles and exceptional fouling resistance thanks to ultrasound measurement technology. For measuring polymer concentrations.
The device consists of a sample grabber (centrate pump) and flow-cell.
OTD-SDWE
Sludge Cake Concentration - Grabbing Solution and Sensor
The Olpas sludge concentration measurement system consists of a dataprocessor and ultrasound transducer, with a sample grabber. The system is capable of measuring sludge in concentrations from 0 - 40 %DS.
The Olpas ultrasound technology provides a fouling-resistant measurement of the sludge concentration, independent of sludge type or morphology.
