Chemical Treatment Technologies: Innovative Oxidation Processes
To reduce the reliance on harmful chlorinated oxidizing agents, the EPA has conducted numerous demonstrations of the effectiveness of safer oxygen-based compounds. The performance of these oxidizers can be enhanced by t..
Chemical Treatment Technologies: Oxidation and Reduction: An Overview
While some metals can be readily precipitated, others cannot be until they are reduced. The clarified water resulting from these processes can then be discharged into a municipal wastewater treatment system.
Chemical Treatment Technologies: Oxidation, Reduction and Gaseous Wastes
Oxidation and reduction not only apply to liquid waste streams. A packed bed scrubber can be used to treat gaseous wastes, such as the hydrogen sulfide odors from a water treatment facility.
Chemical Treatment Technologies: Ozonation
Traditionally, chlorine has been used as a disinfectant to kill viruses and bacteria in drinking water. However, chlorine has the disadvantage of reacting with organics in the water, producing potentially carcinogenic b..
Chemical Treatment Technologies: Precipitation and Toxicity
The electroplating industry uses many chemicals in the process of plating objects like golf clubs and water faucets with metals such as chromium and copper. Before the chemically-laden water used in the electroplating p..
Chemical Treatment Technologies: Water Treatment
The control of pH is critical in the treatment of both wastewater and drinking water. Through the Clean Water Act of 1972, the Environmental Protection Agency established standards for water quality and limits for the t..
Clean Air Act of 1970, The
Scientist and climate change expert Michael Oppenheimer talks about the Clean Air Act of 1970, which he says mandated a slew of controls on automobiles, smokestacks and other sources of air pollution.
Coastline Threats
Explorer and environmentalist Jean-Michel Cousteau talks about threats to the world's coastlines, focusing on the disproportionate percentage of population that lives in coastal areas.
Conservation and Preservation
Former Sierra Club president David Brower talks about the need for conservation and preservation, in light of mankind's unprecedented rate of environmental destruction.
Dealing with Climate Change
Scientist and climate change expert Michael Oppenheimer expresses optimism about global efforts to come to grips with environmental problems.