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The galvano-coagulator is a technology developed in the former Soviet Union in the 1980s. The major feature of the technology is that it appears to be an effective process in hexavalent chromium reduction, with none of the elaborate technology and expensive chemicals required of conventional chrome reduction methods. The technology has also been applied to lead, arsenic and cyanide.The Moscow-based galvano-coagulator manufacturer, O/V Licensintorg, is unclear on the precise mechanism for chromium reduction, and has given unacceptably broad guidelines for designing and operating the units. The described research was intended to identify the mechanism for chromium reduction, and to determine the variables that determine its proper sizing and operating parameters.
Research Digest: Decision Analysis/Implementation Guidance Asset Management Tools Development, Phase 3
In 2006, at the direction of its members through a series of facilitated national focus groups, WERF launched a multi-year research and development project to...
Technologies for Sidestream Nitrogen Removal
Liquid streams (“reject water” or “sidestream”) generated by the dewatering of digested solids generally contain high levels of ammonia and phosphorus. These liquids can be treated in separate or...
Effect of Aluminum and Iron on Odors, Digestion Efficiency, and Dewatering Properties
This study was designed to be a follow up of the WERF Phase III odor study (Biosolids Processing Modifications for Cake Odor Reductions, 03-CTS-9T) odor study. The Phase III study found that iron...
Membrane Technology: Pilot Studies of Membrane-Aerated Bioreactors
This research investigates the use of submerged gas-permeable membranes for the delivery of oxygen to municipal wastewater. This approach is likely offer significant advantages over the...
Standard Definitions for Water Losses
A compendium of terms and acronyms and their associated definition in common use in the field of water loss management.
Underground Utility Locating Technology: Synthesis Report
Accurate locations of buried utility infrastructures are very important for utility owners, highway managers and engineers, designers, and contractors. A lack of reliable information on...
Effluent Limits for Fluctuating Discharges: Phase II - Alternate Frameworks for Water Quality Criteria
This research evaluated appropriate methodologies to calculate water quality criteria for exposure concentrations that vary in frequency, magnitude and duration. We reviewed over 30 toxicological...
Desalination Technology
Desalination Technology: Health and Environmental Impacts covers the latest developments in desalination, examining the environmental and public health-related impacts of these technologies....