Mixing to Improve Tank & System Water Quality
October 7, 2015, 11:00 a.m. - 12:30 p.m. MTN
This webinar will present two keys to improving water quality in storage tanks and distribution systems: (1) volume turnover to minimize water age, and (2) mixing to avoid short-circuiting. Subjects included will be turnover, water age, chlorine residual, and disinfection by-product calculations to show improvement in water quality through reducing water age. Best practices will be covered to tell how tanks and distribution systems can be operated to maximize turnover. Computational fluid dynamics (CFD) models and 3D Laser-Induced Fluorescence (3DLIF) scale models will be used to illustrate mixing and how it is affected by tank style, inlet and outlet pipe configuration, inlet momentum, and temperature differences between source and tank water. Water quality monitoring studies will portray the effect of water age and how mixed and “unmixed” tanks affect water quality. Both passive and active mixing systems will be discussed.
How Do I Monitor My Distribution System - and Why?
October 28, 2015, 11:00 a.m. - 12:30 p.m. MTN
“You can’t manage what you don’t monitor”, an adage first attributed to Lord Kelvin applies to practically everything including water distribution and wastewater collection networks. Water utilities do a great job of producing good quality water at the plant, but need to maintain that quality throughout the distribution system. Monitoring the water distribution and wastewater collection system infrastructure has been traditionally difficult and expensive. Fortunately technology is coming to the rescue making it possible to monitor remote water distribution and wastewater collection systems assets economically and conveniently. The converging technologies of ubiquitous m2m cellular communications, low power robustly packaged RTUs, Internet networking and powerful new software analytics are emerging to provide utility operators the ability to visualize their system; 24/7. Today this can be performed in all weather conditions with minimal manpower. If you can monitor your system, you can better manage it.
Water Treatment for Manganese: Separate Fact from Fiction
October 29, 2015, 11:00 a.m. - 12:30 p.m. MTN
Removal of manganese (Mn) is a common treatment objective for surface and groundwater treatment utilities. Yet, there are many misconceptions regarding Mn in drinking water, centering around (a) appropriate finished water Mn concentrations to protect against aesthetic issues; (b) multiple sources of Mn that must be addressed during treatment; and (c) effectiveness of various treatment technologies for controlling Mn. The webinar’s objective is to present in a clear and concise fashion key features of Mn and its removal during drinking water treatment that all utilities should be aware of. The webinar will address various available information sources, emphasizing the Water Research Foundation document Guidance for the Treatment of Manganese that utilities can use to raise their ability to address Mn concerns.
Assess Water Use Behavior to Manage Demand
November 4, 2015, 11:00 a.m. - 12:30 p.m. MTN
Water utilities have always considered encouragement of water conservation an important objective. Often, though, they implement conservation programs with limited or no information on how consumers will respond to specific measures. This webinar presents an overview of the latest approaches for assessing and identifying water-use behavioral responses to water-demand management strategies. Attendees will learn about advanced customer survey approaches and assessment techniques, such as choice modeling and spatial preference mapping, and how water-use behavior figures in forming demand-response policies for mitigating climate change effects. The webinar’s information can benefit municipalities and water utilities in designing more effective demand-management programs and in assessing performance of established programs, including the effects of financial incentives and customer rebates.