CAWASA Webinar 2022 Series No 13 Permeable Reactive Barrier

CAWASA Webinar 2022 Series No 13 Topic: Use of permeable reactive barriers for passive nitrate removal from onsite wastewater effluent. Presenter: Bryer Manwell M.Sc. P.Eng. Hydrogeological Engineer President of WCOWMA BC Canada Abstract: Operation of onsite wastewater systems has the potential to create deleterious effects on human health and the environment. Nutrient and pathogen loading from onsite wastewater systems to surface water bodies is of particular concern in areas of high population density and high groundwater. Nutrient loading to surface waters can cause algal blooms and negatively effect fish spawning habitat. Permeable reactive barriers PRB are a cost-effective inground passive polishing treatment for onsite wastewater effluent elevated in nutrients and pathogenic bacteria. This presentation will outline case studies in British Columbia Canada where PRBs have been utilized to sequester nitrogen as nitrate for on-site wastewater systems installed near lake foreshore.,

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