GEOG 106 Lecture Notes - Lecture 2: Water Treatment, Biochemical Oxygen Demand, Nonpoint Source Pollution
Document Summary
Water pollution is measured through temperature, and overall water quality/quantities ( in substances) Pollution concentration: how much pollution present (quantitative) Pollution load: how much pollution it has taken through all mediums. This can be tricky with unknown back round levels. Key factor: body of waters ability to breakdown these pollutants. Indicators are key in this measurement, ie species abundance sources and distribution process: Point source pollution: from a specific source, directly. Nonpoint source pollution: from a nonspecific, source on multiple levelsindirectly. On site -> removal ->delivery into body of water. Human and animal wastes in rural landscapes are key effect, directly affecting human health because this source is used directly by rural community. Human, animal, industrial, cross contamination, and precipitation all effect water as a resource in a urban landscape. Sanitary sewers: developed to replace outdoor toilets. Biological oxygen demand (bod): standard measure of water pollution. This is significantly higher in urban environment.
