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MLSS - Mixed Liquor Suspended Solids

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.

We measure MLSS in the range of 0-20 g/L.
Measurements in the range of 0-100 g/L are available too.

MLSS - Mixed Liquor Suspended Solids

Available Products

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MLSS / (activated) sludge concentration (Tentacle version, Chain mounting)

OBO-MLSA

MLSS / (activated) sludge concentration (Tentacle version, Chain mounting)

Factory callibrated sensor with modbus interface.  No screens or buttons necessary. 

MLSS / (activated) sludge concentration (Inline)

OTU-MLSA

MLSS / (activated) sludge concentration (Inline)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

Water monitoring: Suspended Sediment Concentration (SSC)

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.

Suspended Sediment Concentration (SSC) (inline mounting)

OTU-SEDA

Suspended Sediment Concentration (SSC) (inline mounting)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

TSS concentration (Inline mounting)

OTU-TSSB

TSS concentration (Inline mounting)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

TSS concentration in challenging environments

OTE-TSSC

TSS concentration in challenging environments

Olpas TSS sensors are pre-calibrated, drift-resistant and required very few maintenance; thanks to an industry leading fouling resistance and minimal sensor drift. 

TSS Low Concentration (Inline)

OTU-TSSD

TSS Low Concentration (Inline)

Low concentration TSS measurement (0 - 2.000 mg/L). Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

Dry Solids (%DS) measurement in Iron water / Iron sludge (Inline mounting)

OTU-IWAA

Dry Solids (%DS) measurement in Iron water / Iron sludge (Inline mounting)

Measurement of dry matter (dry solids, DS) in iron water, iron sludge, ferric (hydr)oxide. 


Dry Solids (%DS) measurement in Iron water / Iron sludge (Submersible, chain mounting)

OBO-IWAA

Dry Solids (%DS) measurement in Iron water / Iron sludge (Submersible, chain mounting)

Measurement of dry matter (dry solids, DS) in iron water, iron sludge, ferric (hydr)oxide. 


Polymer Concentration Measurement (PCM) - Membrane safeguarding (Inline)

OTU-PCMB

Polymer Concentration Measurement (PCM) - Membrane safeguarding (Inline)

Measuring Polyelektrolyte (PE)/Polymer/Flocculant/Coagulant in low concentrations, as part of safeguarding and monitoring tool for membranes.  Easy installation and maintenance with Hot-Tap retractable.

Sludge Concentration (Inline mounting, hot-tap transducer)

OTU-SDXA

Sludge Concentration (Inline mounting, hot-tap transducer)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

TSS in dewatering centrate (with centrate pump and flowcell)

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.

TSS in dewatering centrate (inline mounting, hot-tap transducer)

OTU-SDXB

TSS in dewatering centrate (inline mounting, hot-tap transducer)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

Polymer Concentration Measurement (PCM) (High concentrations, Inline)

OTU-PCMA

Polymer Concentration Measurement (PCM) (High concentrations, Inline)

Measuring high concentrations of PE/Polymer flocculant in the PE dissolution process (from powder), PE emulsion, PE dilution and activation.  Easy installation and maintenance with Hot-Tap retractable.

Residual Polymers in dewatering centrate (with centrate pump and flowcell)

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.

Sludge Cake Concentration (Inline mounting, SS316 transducer)

OTU-SDXD

Sludge Cake Concentration (Inline mounting, SS316 transducer)

Factory callibrated sensor with Modbus interface. 

Extended transducer for easy installation and maintenance with Hot-Tap retractable.

Sludge Cake Concentration - Grabbing Solution and Sensor

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]

OTD-THRC

Solids Concentration Measurement - Through Pipe (Clamp-on) [TRL-7]

Clamp-on sensor for measurement through pipe.

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