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
No automated mechanical cleaning necessary (so, finally a measurement solution that does not need automated wipers!)
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

Also check these Whitepapers

Sensors for Dry solids in Iron Sludge and Iron Slurry

Number of selected sensors:

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.

More info

OTE-IWAA

Dry Solids (%DS) measurement in Iron water / Iron sludge (Tentacle version, Submersible)

Measurement of dry matter (Dry Solids, DS) in iron water / iron sludge / iron oxide sludge / ferric sludge / slurries.

More info