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Reliable suspended solids measurement

Measuring suspended solids and various other parameters in fluids using our proprietary innovative ultrasound measurement technology  

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Water Monitoring

Olpas has products for these fields

Olpas is best know for products in the fields of water treatment, water monitoring and sludge dewatering.  Focus is on measuring concentrations, but also viscosity and other parameters. 

Sewers, Overflows (CSOs / SSOs) and Stormwater

Sewers, Overflows (CSOs / SSOs) and Stormwater

TSS sensors deliver real‑time concentration alerts in sewers and overflows (CSOs/SSOs). The best in industry for resistance to fouling and drift.

Hydropower

Hydropower

Olpas acoustic backscattering sensors (ABS) track sediment loads, protecting turbines with durable, low‑drift measurements. From millimeter to sub-nanometer particles.

Wastewater

Wastewater

Olpas sensors for water treatment are especially used for challenging measurement: high loads (ex. influent or activated sludge), with exceptional drift resistance and longer maintenance windows.

Drinking water & Water supply

Drinking water & Water supply

The OLPAS measurement technology allows a reliable measurement in a wide range of concentrations. For membrane protection, drinking water production or process water.

Surface water

Surface water

SSC and TSS sensors monitor suspended solids and sediment in open waters in a wide range of particle sizes, independent of temperature changes or changes in water colour, and with season‑long accuracy.

Industrial Water

Industrial Water

In industrial processes, inline ultrasound TSS measurements ensure precise control of slurry and wastewater. The unparrallled fouling resistance and the hot-tap mounting support boost efficiency.

Sludge Dewatering

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.

Most popular Olpas applications

Total Suspended Solids (TSS) is the portion of not dissolved solid particles suspended in water.
This includes organic and inorganic materials, such as silt, decaying matter, industrial wastes, and sewage.

TSS - Total Suspended Solids

RAS indicates the portion of settled activated sludge that is returned from the clarifier to the aeration tank. 
 Maintains a high concentration of microorganisms for effective biological treatment.

RAS - Return Activated Sludge

Mixed Liquor Suspended Solids (MLSS) is the concentration of suspended solids in an aeration tank during the activated sludge process, which is a key parameter to monitor the active biomass.

MLSS - Mixed Liquor Suspended Solids

Polymers are aded during the watertreatment process to enhance the removal of suspended solids and other contaminants.  Olpas sensors help monitoring polymer-concentrations during the process and even in effluent.

Polymer (PE) concentration in low concentrations

Thanks to the extended maintenance intervals, Olpas sensor for sediment concentration monitoring (Suspended Sediment Concentration or SSC) provide a cost-effective and IoT-ready solution for remote monitoring of sediment load in open waters and canals.

SSC - Suspended Sediment Concentration

TSS (Total Suspended Solids) is the most important water quality indicator. Olpas’ industry-leading fouling resistance makes measuring TSS economically manageable in challenging environments like sewers, overflows, CSOs, and remote open waters.

TSS in Sewers and Overflows

Are you active in dewatering / sewage water / industrial wastewater / watermonitoring in nature or sewers / chemical processes / ... 

Get in touch today!  

Articles and blogposts

Olpas is more than technology...

Olpas is more than innovative ultrasound technology.  We develop the technology, build products using it, and are innovation partners for companies that want to incorporate OLPAS technology in their products. 

Innovative Technology 

Due to the nature of the OLPAS technology using ultrasound backscattering, an intrinsic measurement of the solids concentration is obtained. The ultrasound pulse propagates in the fluid and the resulting backscattering echo is a representative fingerprint of the suspension concentration. 

Ultrasound backscattering is independent of optical parameters, flow conditions, temperature or colour of the medium.

Easy to install

A low power, intrinsically safe, ultrasound pulse is sent into the medium. The backscattered echo is recorded by the transducer itself, allowing easy mounting of the transducers in any situation.

The transducer is no bigger than a pen.

Long maintenance window

Due to the ultrasound pulse used in Olpas measurements, fouling resistance of the Olpas sensors is far superior to competing technologies.  So no 'wipers', 'pressured air' or other automated physical cleaning instruments are needed. 

In general no re-calibration of the sensor is needed as long as the physical properties of the sensor stay intact. 

Economic solution

Olpas sensors are both CapEX and OpEx friendly.  Buying or renting a sensor is in general cheaper compared to alternatives.  Easy installation and long maintenance intervals guarantee a lower OpEx

We love working together with our partners to co-develop even better economic solutions for their specific needs.  

Want to know more?  Get in touch today!  

Our Partners

We are in good company: Olpas is supported by...

Logo of Flanders - State of the Art
Logo of Vlaanderen - Agentschap Innoveren en Ondernemen
Logo - SCK CEN
Logo - MYRRHY project of SCK CEN
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