6 articles
Aerobic digestion
Aerobic digestion is a sludge stabilization method in which microorganisms decompose organic solids with oxygen supplied by aeration, valued at small and medium treatment works for simple operation.
Biosolids
Biosolids are sewage sludge from municipal wastewater treatment, treated to meet EPA standards under 40 CFR Part 503 and applied to land as fertilizer or soil conditioner.
Cecil Lue-Hing
Cecil Lue-Hing (1930–2026) was a Jamaican-born American environmental engineer who spent 28 years directing research at Chicago's water reclamation district and advanced sewage sludge reuse as biosolids.
Sewage sludge
Sewage sludge is the semi-solid residue of municipal and industrial wastewater treatment, containing organic matter, nutrients, and microorganisms; treated sludge applied to land is called biosolids.
Sewage sludge treatment
Sewage sludge treatment, also called sludge treatment, is the set of processes that reduce volume, destroy pathogens, and prepare sewage sludge for land application, landfilling, or incineration.
Sludge thickening
Sludge thickening is a sludge treatment step that removes water from wastewater sludge to reduce volume and lower downstream costs, using gravity, dissolved air flotation, centrifuges, or gravity belts.