Definition of secondary treatment in English:

secondary treatment

Syllabification: sec·ond·ar·y treat·ment


  • The further treatment of sewage effluent by biological methods following sedimentation.
    More example sentences
    • Most treatment plants also have secondary treatment, whereby sewage is stirred and oxygen is blown in to help beneficial bacteria breed and eat up the ‘solids.’
    • Ecosystem damage and fish toxicity occurred downstream from mills that did not use chlorine, even in advanced mills with secondary treatment processes.
    • This waiver allows for less than full secondary treatment of the sewage being discharged into the ocean off Huntington Beach.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
elaborate ornamentation of a vocal melody