Dry solids in Iron Sludge and Iron Slurry
Measuring Dry Solids (dry matter) in iron sludge / iron water for mining and water supply (drink water production) or industrial water treatment
Measuring Dry Solids (%DS) in Iron Sludge
Iron sludge/slurry, also known as iron oxide sludge or ferric sludge, is a byproduct of drinking water production from water that contains iron.
Common methods for managing iron sludge include dewatering or drying to reduce its volume before recycling or reuse in certain applications. A reliable measurement of the sludge concentration (Dry Solids or %DS) is key to a correct handling and processing of the sludge.
"As a drinking water company reliant on groundwater, we produce several truckloads of iron sludge weekly. We tested optical and microwave sensors from several suppliers. Only Olpas provides a technology that can successfully measure %DS in Iron Sludge."
Key features
Fouling resistance, also in challenging environments
Much less drift, compared to traditional sensors, even with a much longer maintenance interval
Not influenced by colour changes of the fluid
Mounting:
Silo/bassin: free hanging on a chain, in a guiding tube, or fixed mounting
Inline: in a pipe
IoT-ready
IoT-ready, with digital output optimised for energy efficient data communication
Low energy usage
Easy to connect to an external powersupply (batteries or solar)
Comparison of Olpas Dry Solids (DS) sensor to traditional DS-measurements
Sampling | Optical (UV) | Microwave | Olpas Sensors | |
Applicable in high turbidity medium? | ✅ | ❌ Not applicable | ✅ | ✅ |
Unaffected by signal reflection of iron particles? | ✅ | ✅ | ❌ Not applicable (☠️) | ✅ |
Unaffected by colour variations? | ✅ | ❌ | ✅ | ✅ |
Online measurement | ❌ | ✅ | ✅ | ✅ |
Maintenance interval required | Manual action | x2 per week | x1 per month | x1 per season |
Measurement of dry solids in iron sludge is clearly very challenging with traditional measurement technologies.
Olpas DS-measurement in Iron Sludge is suitable for measurements in
Free hanging in a silos or bassins: chain mounted, fixed mounting or mounted in a guiding tube
Inline measurement in a pipe
Available Products
Number of selected Products:
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OTE-SEDA
Water monitoring: Suspended Sediment Concentration (SSC)
Olpas SSC sensors use a novel proprietary 3-8 Mhz Accoustic Backscattering measurement technology for an exceptional wide coverage of particle sizes for its concentration measurement. The sensors are pre-calibrated, drift-resistant and require very few maintenance.
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.
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