Aerated sterile sewage sludge
Channel: Carl Ramirez
Date: 2018-10-24

This video was taken at the Penrith Wastewater Treatment Plant (https://www.sydneywater.com.au/Education/Tours/virtualtour/fact_sheets/treatment_processes_factsheet_FINAL.pdf). This sludge has already been treated, now they're just flocculating and aerating the sterile sludge for collection as fertilizer.

The wastewater treatment plant captures the odorous gases early in the treatment process. Therefore, walking through the plant and going near this sewage sludge, it doesn't smell like anything at all.