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 ...
Pollution Prevention: Bridging Troubled Water: Pulp and Paper Industry Regulations
The transformation of wood or other raw materials into pulp through chemical or mechanical processes is a water intensive process that creates large residues of waste materials. However, prior to the 1970's, the pulp and paper industry was largely u...
Pollution Prevention: Bridging Troubled Water: Pollution Prevention: Past, Present and Future
In terms of measurable impact and effectiveness, the federal Clean Water Act has been the most successful piece of environmental legislation in U.S. history. For companies thinking of investing in pollution prevention, the key is in balancing the c...
Physical Treatment Technologies: Waste and Emissions Standards
In the past, when the waste load was light, nature's ways of purifying itself were sufficient. However, the amount of waste generated by contemporary society has overburdened these restorative powers. As a result, regulations now control the quant...
Chemical Treatment Technologies: Benign by Design, Biomonitoring, and Enforcement
The future of chemical treatment technology is striving to attain the reduction of waste at its source, and seeking to improve the monitoring of that which is discharged.
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...
Introduction to Waste Stream Management: Overview and History of Pollution and Environmental Awareness
While pollution has always been part of the industrial process, environmental accountability is relatively new. The founding of the Environmental Protection Agency and the introduction of basic measures to standardize emissions and treatment of liq...
Introduction to Waste Stream Management: Liquid Waste
In the past, some of the major sources of water pollution have been landfills, underground storage tanks, and untreated effluent. Under the Clean Water Act, the EPA sets industry-specific discharge limitations for water pollutants. Treatment metho...