Secondary treatment

Secondary treatment: Second step in most waste treatment systems, in which bacteria break down the organic parts of sewage wastes; ...

Secondary Treatment: The second step in most publicly owned waste treatment systems in which bacteria consume the organic parts of the waste.

Secondary Treatment
The biological portion of wastewater treatment which uses the activated sludge process to further clean wastewater after primary treatment.
Sedimentation ...

secondary treatment The second step, following primary treatment, in most waste treatment systems in which bacteria and other microorganisms oxidize the organic parts of the wastes.

SECONDARY TREATMENT: Treatment of wastewater to a nonpotable level so that it may be discharged into the natural hydrologic system.

Secondary treatment. Generally, a level of treatment that produces 85 percent removal efficiencies for biological oxygen demand and suspended solids. Usually carried out through the use of trickling filters or by the activated sludge process.

secondary treatment
The level of wastewater treatment that typically involves biological reduction in concentrations of particulate and dissolved oxygen-demanding pollutants, beyond the level of primary treatment.
sediment ...

Secondary treatment
The removal or reduction of contaminants and BOD of effluent from primary wastewater treatment.
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secondary treatment
Translations of "biological wastewater treatment":
Language Translations
Bulgarian: ...

Secondary treatment In wastewater treatment, the conversion of the suspended, colloidal and dissolved organics remaining after primary treatment into a microbial mass with is then removed in a second sedimentation process.

secondary treatment Stage of wastewater treatment wherein bacteria are used to break down organic materials and significantly reduce biochemical oxygen demand.

Advanced Treatment: A level of wastewater treatment more stringent than secondary treatment; requires an 85-percent reduction in conventional pollutant concentration or a significant reduction in non- conventional pollutants.

Systems that have been traditionally used to collect municipal wastewater in gravity sewers and convey it to a central primary or secondary treatment plant prior to discharge to surface waters.
Source: Terms of the Environment
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Conventional Systems: Systems that have been traditionally used to collect municipal wastewater in gravity sewers and convey it to a central primary or secondary treatment plant prior to discharge to surface waters.

See also: Wastewater, Treatment, Waste, Water, Wastewater treatment