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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.
Demonstration and Evaluation of Innovative Wastewater Main Rehabilitation Technologies
The lack of knowledge on the performance of innovative wastewater rehabilitation technologies, specifically for large-diameter pipes, and the limited ability to determine the...
Guidelines for Utilities Wishing to Conduct Pilot-Scale Demonstrations
As stewards of public funds, Water Resource Recovery Facilities (WRRFs) can be conservative in their approach to new technologies and processes, which hinders the advancement of technology and...
Whole Effluent Toxicity Testing
Under the National Pollution Discharge Elimination System (NPDES), many municipal and industrial wastewater treatment facilities must perform Whole Effluent Toxicity (WET) Testing. Regulatory...
Biosolids Samples Processing for Analyses of Pathogens
In this study, a two-step approach was used to develop new sample detection and processing methods that facilitate the application of molecular techniques to uses and...
Aeration, Mixing, and Energy: Bubbles and Sparks
Aeration, Mixing, and Energy: Bubbles and Sparks is the first book on bubbles and sparks, presenting the state-of-the-art on aeration and mixing technology for water and wastewater...
Guidance Document on Anaerobic Digester Foaming Prevention and Control Methods
The development of this WERF anaerobic digester (AD) foaming guidance document is based on the need for a specific detailed methodology that water reclamation and recovery facilities (WRRF)...
Solids Role in Tertiary Chemical Phosphorus Removal by Alum
The need to control and remove phosphorus (P) in discharges from wastewater treatment facilities (WWTF) to prevent eutrophication of receiving waters is well known. Regulatory initiatives are...
The Roadmap to Low Carbon Urban Water Utilities: An International guide to the WaCCliM approach
The transition to low-carbon urban water utilities is an innovative idea, only embraced by a few forward thinking utilities currently. This roadmap is directed at urban water utility managers in...