Sludge Dewatering
We provide sensors for a complete insight into (sludge) dewatering. We measure dry solids in sludge, monitor centrate quality (TSS in centrate and residual polymers) and high solids concentrations (in dry cake or in iron water).
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
Sludge dewatering is performed using a wide variety of technologies. For processing urban wastewater sludge, we often see centrifuges, belt filter presses or a screw press. Iron water is often thickened using gravity 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 technology and new Olpas sensors, monitoring of the dewatering process became available for all installations.
Olpas has 5 sensors available for monitoring in 4 locations. Not all of these are required!
Monitoring Sludge inlet: Sludge concentration of thickened sludge
Centrate Monitoring:
Total Suspended Solids (TSS) in centrate
Measuring 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.
