Secondary Treatment

Meaning, Term, and Glossary Definition - What is Secondary Treatment?

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. This treatment removes floating and settleable solids and about 90 percent of the oxygen-demanding substances and suspended solids. Disinfection is the final stage of secondary treatment.

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Related glossary terms:

Advanced Treatment   Advanced Wastewater Treatment   Aerobic Treatment   Biological Treatment   Categorical Pretreatment Standard   Chemical Treatment   Complete Treatment   Established Treatment Technologies   Granular Activated Carbon Treatment   Innovative Treatment Technologies   
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