Sludge Concentration (Solids concentration in sludge)
The Olpas Sludge Concentration sensors offers a cost-effective measurement with maintenance intervals that are four times longer compared to optical sensors.
An essential parameter to monitor the dewatering process
Measuring the sludge concentration at the inlet of the dewatering unit allows pro-active adaptation of the dewatering process. Monitoring variations in ingoing sludge, is vital to determine the most optimal process: the parameters of the dewatering unit, and the amount of polymers to add.
An accurate reliable measurement that swiftly follows the concentration trend allows the control system logic to adapt the sludge flow-rate, dewatering-parameters and PE-concentration to be added.
Key features
A reliable drift-resistant measurement of sludge concentration
Fouling resistance, also in challenging environments
Easy inline mounting, with the (optional) hot-tap mounting support. Cost independent of pipe-size.
An Olpas sensor where optical turbidity sensors fail
Current state-of-the-art optical sensors fail to measure the concentration accurately in changing conditions, due to their dependence on the optical parameters of the sludge. Furthermore, fouling is present after a few days (sometimes even hours!) of operation which cannot be fully reversed by the fault-prone mechanical wipers or pressured air cleaning.
An Olpas sensor as an economic alternative to microwave sensors
Sensors using microwave measurement technology are often used as an alternative for measurement in circumstances where optical parameters fail. Sticky sludge or frequently changing optical parameters are harmful for a reliable optical measurement. Thats where microwave based sensors come around.
These sensors however are expensive to buy, and expensive to install, with a cost that depends on the specifics of the installation (size of pipe).
Microwave sensors also need in-situ calibration per sludge type, making the technology not suitable for measurements in installations with varying sludge sources.
Comparison of Olpas Slude Concentration sensor to traditional measurements
Olpas Sensors | Optical (UV) | Microwave | Sampling | |
Economic sensor (Product cost) | ✅ | ✅ | ❌ | Not applicable |
Economic sensor (Installation) | ✅ | ✅ | ❌ | Not applicable |
Economic sensor (Maintenance) | ✅ | ❌ | ✅ | Not applicable |
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 | x1 per month recommended | x2 per week | x1 per month | Manual action |
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.
![Solids Concentration Measurement - Through Pipe (Clamp-on) [TRL-7]](https://static.wixstatic.com/media/27c1c1_ea73ffddf4514be4942e9a9b9c4805be~mv2.jpg/v1/fill/w_320,h_320,al_c,q_80,usm_0.66_1.00_0.01,enc_avif,quality_auto/Image-place-holder.jpg)