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Hoser or hose-head is both a slang term and a derogatory term, originating from Canada and used primarily by those imitating Canadians. It is not often used by Canadians, but it is sometimes used as typical Canadian slang by others.
Biological Nutrient Removal (BNR) Operation in Wastewater Treatment Plants: WEF Manual of Practice No. 30 (Asce Manual and Reports on Engineering Practice) [Water Environment Federation] on Amazon.com. *FREE* shipping on qualifying offers. BNR is a fast-growing method of removing biological pollutants (bacteria, etc.) from wastewater.