Share this entry

secondary treatment Line breaks: sec¦ond|ary treat|ment

Definition of secondary treatment in English:


[mass noun]
The further treatment of sewage effluent by biological methods following sedimentation: sewage dumped in certain ‘sensitive’ areas of the sea would be given secondary treatment [as modifier]: a secondary-treatment stage comprising aerobic biological oxidation and final settlement
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.

Definition of secondary treatment in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day doofus
Pronunciation: ˈdo͞ofəs
a stupid person