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04/04/18 Storage Tank Mixing and Distribution System Water Quality Improvements Webinar IEPA# 12670
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 Export to Your Calendar 4/4/2018
When: Wednesday, April 4, 2018
12:00 pm
Where: Your home or office computer
United States
Contact: Marianne Perino
866-521-3595 ext6

Online registration is available until: 4/4/2018
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Storage Tank Mixing and Distribution System Water Quality Improvements Webinar IEPA# 12670


CEU TYPE: Technical
IEPA#: 12670
IDEM#Applied for

SummaryActive mixing in drinking water storage tanks has become a proven tool for improving water quality in potable water distribution systems. Active mixing can reduce residual loss, water age, prevent tank icing and, when combined with active ventilation or aeration, remove DBPs from finished water.

In the summer, high temperatures exacerbate the layering and separation of cold and hot water inside tanks (thermal stratification). Hot, stagnant water settles at the top of the tank as a fixed strata as tank water levels rise and fall – causing excessive water age and residual loss. Biofilm growth accelerates as water quality decreases with disinfection byproducts often inadvertently produced as operators attempt to boost tanks with manual addition of chlorine. Nitrification can also result with tank dumping as a sole remedy.
Despite best efforts in treatment plants, THMs continue to form as a function of time and naturally occurring organic materials in water and pipeline assets. Without mixing as a base strategy, THM control in distribution networks is impossible.
Active mixing provides continual circulation – distributing residual to all corners of a storage tank so that the entire volume is homogenous in both temperature and chemistry. For summer heat, active mixing fully incorporates the cooler, residual-rich water entering the tank to overcome thermal stratification and combat disinfection byproducts formation. In the winter, mixing circulates the warmer water entering through the inlet pipe to prevent ice damage in the upper region of tank. This presentation will point to real-world case studies and data that underscore powerful tank mixing as an important and necessary step to water quality improvement and distribution asset protection.

Presenter: Andy Seidel,  UGSI Solutions Chief Executive Officer Andrew is a chemical engineer and has 28 years of water industry experience. He has been the CEO of companies such as USFilter, Veolia N.A. and Underground Solutions. He has served on the boards of utilities such as Aqua America and Veolia S.A., engineering firms such as O'Brien & Gere and process technology companies such as USFilter, Ostara Nutrient Recovery, Culligan and Nuverra Environmental Solutions. 



REGISTRATION & HOURS: This webinar will begin at 12:00pm and conclude by 1:00pm CST. Earn up to 1 PDH or RTC hour. After registering with Illinois Section AWWA, attendees will be furnished via email with all materials and links needed to participate in the webinar. Questions? Call 866-521-3595 Ext. 3


Registration Type

ISAWWA Member Rate
Non ISAWWA Member Rate IND Rate


(ends 04/04/18)

$30 $25


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