In this webinar, Dr. Peter S. Fiske will review the current technologies now being deployed around the country to successfully reduce THM levels in drinking water and discuss case studies where in-tank aeration has been employed successfully to help utilities reach Stage 2 DBP Rule compliance. Participants will gain practical, hands-on knowledge about in-tank aeration systems, and how to avoid some common pitfalls and problems.
Dr. Peter S. Fiske is the CEO of PAX Water Technologies, Inc., the leading manufacturer of energy-efficient in-tank technologies for improving water quality. Dr. Fiske received his Ph.D. from Stanford University and has extensive experience in the fields of chemistry and materials science.
Educational Outcomes
* Knowledge of the THMs and their impact on water systems
* Knowledge of common THM reduction methods
* Understanding of how current technology reduces THM levels
* Knowledge of successful case studies
This webinar will include a review of biofilms discussing where and how they can develop within the distribution system. Case studies of how chemicals can be used to reduce the levels of biofilm within the plant and storage tanks.
Randy Moore has been with Utility Service Company, Inc. (USCI) since 1998 and is currently Vice President of Market Development. He attended the Missouri University of Science & Technology (Missouri School of Mines and Metallurgy) earning a B.S. in Metallurgical Engineering and a M.S. in Engineering Management. Randy also completed the MBA program at the University of Missouri - St. Louis. He is certified by the Construction Specifications Institute as a "Construction Document Technologist."
Roger Miller holds degrees in Chemistry and Biology from the University of Central Missouri and has over 30 years of experience in multiple areas of the water industry. His work has involved field and lab protocols for problem assessment and resolution of source water supplies to finished water transmission and storage. He has served on numerous committees within national, state and local water organizations and has participated has a national speaker for American Water Works Association, National Ground Water Association, National Rural Water Association and American Chemical Society.
Educational Outcomes
* Understanding of bioflims and how they form
* Knowledge of the impact of biofilms on water quality
* Understanding of how biofilm growth can be controlled and the benefits of those controls
* Knowledge of case studies highlighting the impact of biofilm and controlled biofilm growth
Water quality problems in storage tanks, including loss of disinfectant residual and DBP spikes, can be a direct result of short-circuiting, poor mixing and circulation, poor turnover, and excessive detention time. Many of these water quality problems can be specifically attributed to the location and orientation of the inlet and outlet pipe(s). This presentation discusses the science of hydraulic short-circuiting and mixing in storage tanks(reservoirs, standpipes and elevated tanks). Computational Fluid Dynamics (CFD) models and 3D Laser-Induced Fluorescence (3DLIF) scale models are used to illustrate mixing and how it is impacted by tank style, inlet and outlet pipe configuration, inlet momentum, and temperature differences between source and tank water. Both passive and active mixing systems are discussed and several case studies are presented that use “before” and “after” sampling data to show improvements in water quality after the installation of a mixing system.
Michael Duer has a Bachelor of Science Degree in Mechanical Engineering and is a registered Professional Engineer in the Commonwealth of Pennsylvania. He joined Tideflex Technologies in 1994 and is currently the Chief Engineer specializing in the Tideflex Check Valve product line. He has been involved in Design and Applications Engineering specializing in control and check valves for the water and wastewater industries. He utilizes Computational Fluid Dynamics (CFD) modeling to analyze mixing in finished water storage facilities.
Educational Outcomes
* Understanding of water stratification and its impact on water quality in storage tanks
* Knowledge of studies and models detailing water stratification and tank mixing
* Understanding of tank modeling and its impact on tank mixing
* Understanding of different tank mixing techniques and the science behind their operation
This webinar will discuss sustainable strategies for the management of water quality in water storage tanks. These tools are effective, sustainable and perform independent of disinfectant types or the raw water source.
Randy Moore has been with Utility Service Company, Inc. (USCI) since 1998 and is currently Vice President of Market Development. He attended the Missouri University of Science & Technology (Missouri School of Mines and Metallurgy) earning a B.S. in Metallurgical Engineering and a M.S. in Engineering Management. Randy also completed the MBA program at the University of Missouri – St. Louis. He is certified by the Construction Specifications Institute as a "Construction Document Technologist."
Educational Outcomes
* Knowledge of the basics of water stratification and it's impact on drinking water.
* Understanding of the benefits of mixing.
* Understanding of the difference methods and technniques of tank mixing, including the advantages and disadvantages of each
* Understanding of other methods of improving water quality in storage tanks
Water storage tanks have historically been designed with hydraulic considerations, but not with consideration to preserving water quality. As a result, many water storage tanks suffer from water quality degradation (stratification, loss of residual, DBP spikes, and nitrification) due to short-circuiting and incomplete mixing caused by poor inlet/outlet pipe configurations. This presentation discusses the science of mixing water storage tanks. Computer (CFD) and physical scale modeling results are utilized to illustrate the impacts of tank style, inlet/outlet pipe configurations, water temperature, and volume turnover on mixing and water quality. Both passive and active mixing systems will be presented with pros and cons of each. Additional topics will include methods to sample/monitor storage tank water quality, and how to calculate water age and methods used to minimize water age that will result in optimization of distribution system water quality.
Michael Duer has a Bachelor of Science Degree in Mechanical Engineering and is a registered Professional Engineer in the Commonwealth of Pennsylvania. He joined Tideflex Technologies in 1994 and is currently the Chief Engineer specializing in the Tideflex Check Valve product line. He has been involved in Design and Applications Engineering specializing in control and check valves for the water and wastewater industries. He utilizes Computational Fluid Dynamics (CFD) modeling to analyze mixing in finished water storage facilities.
Educational Outcomes
* Understanding of water stratification and its impact on water quality in storage tanks
* Knowledge of studies and models detailing water stratification and tank mixing
* Understanding of tank modeling and its impact on tank mixing
* Understanding of different tank mixing techniques and the science behind their operation