Thermal Treatment Technologies: Municipal Waste and Reciprocating Grate Systems
One of the thermal treatment technologies that strives to make the best use of time, temperature and turbulence is the reciprocating grate incinerator, used by nearly 250 municipalities.
The Force of Law: Developing Environmental Regulations
The Environmental Protection Agency is charged with setting appropriate environmental standards; doing so based on credible scientific research, peer review, public review, and independent of the influence of special interests.
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: 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 the addition of powerful ultra...
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 by-products. Ozonation, an ox...
Introduction to Waste Stream Management: Gaseous Waste
Gaseous wastestreams present a unique set of challenges. Air pollutants can travel far from their point of origin, causing a variety of health and environmental problems. A range of treatments, including physical, chemical, thermal and biological,...
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: Clearing the Air: Case Study: Alternative Dry Cleaning Solvents
Like many other neighborhood businesses, such as the local bakery, auto body shop and photo finishing lab, dry cleaners nearly always have fewer than 20 employees. And yet, like these other small businesses, dry cleaners generate significant toxic ...
Pollution Prevention: Clearing the Air: Industrial Ecology and Pollution Prevention
In the years following the first Earth Day and the establishment of the Environmental Protection Agency, regulatory goals focused on "end-of-pipe" solutions to capture and treat waste before it contaminated the environment, but did little to address...
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...