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 toxicity of effluents from ind...
Pollution Prevention: Bridging Troubled Water: Alternative Pulp and Paper Bleaching Technology
Facing a lawsuit charging it with discharging toxic effluent in the water off the coast of northern California, Louisiana Pacific knew it needed to change the way its pulp mills operated. Even though it successfully met the mandates of the lawsuit ...
The Food and Agriculture Industries: The Dairy Industry: Waste Streams and Environmental Management
Environmental management within the dairy industry has changed dramatically in recent years. It's shifted from a reactive to a very pro-active approach, in which the creamery attempts to reduce, reuse and recycle various waste streams, thus minimiz...
Waste and Other Threats to Oceans and Marine Life
Explorer and environmentalist Jean-Michel Cousteau talks about the adverse effects of waste, heavy metals and other chemicals on the ocean and marine life.
Biological Treatment Technologies: Biological Treatment, Wastewater and Sewage
Biological treatment is a major application of microbial technology used for treating municipal wastewater and sewage. One of the most important biological treatment processes is anaerobic digestion, in which anaerobic bacteria are placed in huge c...
Water Pollution and Industrial Nations
Explorer and environmentalist Jean-Michel Cousteau compares the relative impact of Third World nations and industrial nations on the marine environment.
Thermal Treatment Technologies: Wet Air Oxidation
Wet air oxidation is a process in which organic matter in an aqueous solution can be oxidized and release heat, provided that oxygen is present under increasing pressure. With the passage of the Clean Water Act in 1972, and the requirements that it...