1. Risks of hypoxia and acidification in the high energy coastal environment near Victoria, Canada's untreated municipal sewage outfalls
- Author
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Roberta C. Hamme, Christopher J. Lowe, Jeremy Krogh, and Debby Ianson
- Subjects
Risk ,Canada ,High energy ,010504 meteorology & atmospheric sciences ,chemistry.chemical_element ,Municipal sewage ,Wastewater ,010501 environmental sciences ,Aquatic Science ,Oceanography ,Waste Disposal, Fluid ,01 natural sciences ,Oxygen ,Water column ,Seawater ,14. Life underwater ,0105 earth and related environmental sciences ,Carbon chemistry ,Outfall ,Environmental engineering ,Hypoxia (environmental) ,Hydrogen-Ion Concentration ,Pollution ,Carbon ,6. Clean water ,chemistry ,13. Climate action ,Environmental science ,Environmental Monitoring - Abstract
Wastewater disposal often has deleterious impacts on the receiving environment. Low dissolved oxygen levels are particularly concerning. Here, we investigate the impacts on dissolved oxygen and carbon chemistry of screened municipal wastewater in the marine waters off Victoria, Canada. We analyzed data from undersea moorings, ship-based monitoring, and remotely-operated vehicle video. We used these observations to construct a two-layer model of the nearfield receiving environment. Despite the lack of advanced treatment, dissolved oxygen levels near the outfalls were well above a 62 μmol kg−1 hypoxic threshold. Furthermore, the impact on water column oxygen at the outfall is likely
- Published
- 2018
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