Entry from British & World English dictionary
Definition of primary treatment in English:
The sedimentation and removal of most suspended matter from sewage effluent: [as modifier]: a primary treatment plant
More example sentences
- Five out of seven sewage treatment facilities in the Greater Vancouver Regional District provide primary treatment of sewage.
- Most Canadian cities, especially those on the west coast, provide only primary treatment to sewage.
- At the time many mills did not have primary treatment for mill effluents (for example, the use of a settling pond) and fewer still had secondary treatment ponds, which used aerobics to reduce drastically the pollution risk.
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