EC238 Chapter Notes - Chapter 16: Quality Management, Sewage Treatment
Document Summary
Types of water pollutants: organic wastes e. g. degradable wastes such as domestic sewage, chemicals like pesticides, oil, non-material pollutants radioactivity, heat such as large scale industrial processes use water. Inorganic substance toxic metals, salt for cooling purposes. Persistent pollutants those that remain for a long period of time, because they are non-degradable, or the rate of degradation is very slow, e. g. wastes from mining operations, pesticides, fertilizer, soil runoff. Degradable pollutants they undergo a variety of biological, chemical, and physical processes that change their characteristics after emission. High levels of dissolved oxygen (do) usually means high quality water. Total emissions = output * (input/output) * (emissions/input) When public authorities focus on particular pollution-control technologies this has a deadening effect on innovation. When emission limitations are put on the wrong variable it makes pollution control efforts ineffective. Ontario water pollution policy is called the municipal and industrial strategy for abatement (misa)
