ENVIRSC 2EI3 Lecture 8: Module-8 Enviro 2EI3
16 Oct 2018
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Unit #1: canada"s water quantity and quality. Seemingly endless water supply: abundance of fresh water in canada is due to, few large deep lakes and many shallow ones, 60% of water flows to the arctic or subarctic, few people, access to only 2. 6% Industrial and urban waste are easier to identify: ex: sewer plants, water receives many levels of treatment, primary treatment: removes insoluble material, secondary treatment: removes bacteria, tertiary treatment: removes some chemicals and nutrients. Water quality: non-point source: like agricultural and urban run off = more difficult to identify, diffused pollution = layered problem, environmental degradation and economic costs, ecosystem integrity and human health. Intertwined with human values beliefs and behaviours: storm water runoff, channels the flow of water. Pollution and the great lakes: during 1960s eutrophication of lake erie = major problem and conducted study from agriculture and forestry land uses (potential non-point sources, study by the pollution from land use activities reference international.
