Sludge Mapping In Perth Lagoon

Client's challenge: Quantify and map sludge in a naturally lined wastewater lagoon built over a riverbed. The client was concerned that the riverbed would be a difficult area to accurately identify sludge accumulation.

Hydrasurvey's solution: Hydrasurvey conducted sludge surveys in three cells in Perth, Ontario.

• Hydrasurvey’s standardized procedure to manually map the liner was used to differentiate the liner from the top of the sludge blanket.

• The liner map enables us to distinguish between the top of sludge and the liner using sonar.

• Our single beam sonar was then used to map the lagoons for sludge accumulation and distinguish the riverbed.