Activated Sludge
The mass of microorganisms, mainly bacteria, that develops when sewage or waste water is aerated.
Activated Sludge
Product that results when primary effluent is mixed with bacteria-laden sludge and then agitated and aerated to promote biological treatment, speeding the breakdown of organic matter in raw sewage undergoing secondary waste treatment.
Activated Sludge Process: A sewage treatment process by which bacteria that feed on organic wastes are continuously circulated and put in contact with organic waste in the presence of oxygen to increase the rate of decomposition.
Activated sludge
The biological process that removes organic matter from wastewater using microscopic plants and animals (organisms). The activated sludge process imitates the natural process that a river, lake or stream uses to clean itself.
activated sludge process
removes organic matter from sewage by saturating it with air and microbial organisms.
activation ...
Activated sludge: Oxygen dependent biological process that serves to convert soluble organic matter to solid biomass, that is removable by gravity or filtration.
Activated sludge
A term used to describe sludge that contains microorganisms that break down organic contaminants (e.g., benzene) in liquid waste streams to simpler substances such as water and carbon dioxide.
activated sludge process A biological wastewater treatment process in which a a mixture of wastewater and biomass is agitated and aerated for aerobic treatment.
Activated sludge An active population of microorganisms used to treat wastewater, or the process in which the organisms are employed.
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A mixture of activated sludge and water containing organic matter undergoing activated sludge treatment in an aeration tank.
Mixed Metals ...
Contact stabilisation
an activated sludge process that produces less surplus sludge; separated sludge is aerated vigorously before it contacts and stabilises raw sewage ...
It is accomplished by bringing together waste, bacteria, and oxygen in trickling filters or in the activated sludge process.
Decomposition of complex organic materials by microorganisms. Occurs in self-purification of water bodies and in activated sludge wastewater treatment.
Biological Oxygen Demand (BOD) ...
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.
The second step in most publicly owned waste treatment systems in which bacteria consume the organic parts of the waste. It is accomplished by bringing together waste, bacteria, and oxygen in trickling filters or in the activated sludge process.
 See also: Sludge, Liquid, Waste, Organic, Water
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