Activated sludge
A suspended-growth biological treatment process.
Reference
Wastewater Treatment Glossary
Aeration
Supplying oxygen and mixing to support biological treatment.
BOD
Biochemical oxygen demand, a measure related to biodegradable organic load.
Clarifier
A tank that separates solids from liquid by settling.
DO
Dissolved oxygen.
Drainfield
A soil-based area that receives and disperses treated septic effluent.
MLSS
Mixed liquor suspended solids.
RAS
Return activated sludge.
SCADA
Supervisory control and data acquisition system.
Septic tank
An onsite tank that separates and partially digests household wastewater solids.
TSS
Total suspended solids.
WAS
Waste activated sludge.