Measurements Olpas covers

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.

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

Olpas TSS sensors measure in ranges from 0-1000 mg/L and 0-2000 mg/L to 0-20 g/L (and many more ranges), and in challenging environments like sewers, overflows or even in dewatering centrate.

Detecting polymer levels helps safeguarding membranes, control overdosing or underdosing, and minimize operational costs or environmental impact

High concentrations during the activation phase, (very) low concentrations for membrane safeguarding and to limit environment risks, and residual polymer/PE-overdosing in centrate.

Measuring Dry Solids (dry matter) in iron sludge / iron water for mining and water supply (drink water production) or industrial water treatment

The Olpas Sludge Concentration sensors offers a cost-effective measurement with maintenance intervals that are four times longer compared to optical sensors.

Dry Solids measurement for Dry Cake, measuring sludge cake density in concentrations from 10 - 40 %DS. There are inline sensors available, and sensors with a sample-grabbing device.

Available for inline measurement (with the sensor in direct contact with the fluid or paste) and as a clamp-on (for measurement through the pipe).
For high solids concentrations up to 60 %DS.

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.