Timothy K. Tsukamoto, Ph.D., Director
Impacted acid mine drainage typically contains elevated concentrations of dissolved ferrous iron. The oxidation of ferrous iron to ferric iron is a common component to most lime treatment systems because ferric iron is precipitated from solution at a lower pH than ferrous iron. This oxidation is typically accomplished by pumping air with compressors and mixing the air, lime and water with agitation mixers in large tanks. Although this method of treatment is effective, it requires significant power and a large amount of space to house the reaction tanks. The Rotating Cylinder Treatment System (RCTS) “patent pending” utilizes shallow trough like cells (that contain the water being treated) and rotating cylinders to transfer oxygen and agitate the water. This system has been tested on multiple sites in Nevada and California. When compared with conventional systems it requires less power, and less space and is more efficient at mixing lime.
Key words: oxidation, aeration, lime treatment systems, acid mine drainage, acid rock drainage, water treatment, mining remediation, and passive treatment systems.
Tim Tsukamoto is currently working as a Research Assistant Professor at the
University of Nevada, Reno. He is the Principal of TKT Consulting, LLC, and
is a Director for Ionic Water Technologies. He has worked in various aspects
of the mining industry for the past 18 years and has developed acid mine drainage
treatment and prevention technologies at sites throughout North America, including
sites in Nevada, Montana, British Columbia and several sites in California.
He has participated in the Leviathan Mine, the Colorado Hill, the Rio Tinto
Mine, the Ely Mine and the Elizabeth Mine Technical Advisory Committees. Dr.
Tsukamoto has a B.S. in Biology and a Ph.D. in Environmental Chemistry from
the University of Nevada, Reno.