How to Prevent Ice Damage inside Water Storage Tanks

Posted by Lily Kaiserman on 9/10/12 5:58 PM

In the water distribution system, cold weather can create risks that are hidden from plain sight: ice accumulation inside water storage tanks. Often, when operators realize they have a problem with ice buildup in their tanks, the tank’s interior is already damaged or the wall is punctured. Additionally, traditional methods for reducing ice formation inside water tanks have been expensive, difficult and often only partially effective.

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Topics: active tank mixing, PAX Water Mixer, mixer case studies, freeze protection

Biomimicry in Action [VIDEO]

Posted by Lily Kaiserman on 8/29/12 12:30 PM

Six years ago, PAX Water Technologies entered the water industry with a novel approach for improving water quality in storage tanks – biomimicry. By examining how fluids move in the natural world, PAX Water Technologies Founder Jay Harman, developed a small yet powerful impeller that mimics the spiral flow patterns found in whirlpools and tornados. This 6-inch “Lily” impeller is not only organic in shape (it resembles a Calla Lily), it can mix a 10 million gallon storage tank using the same energy footprint as three 100-watt light bulbs.

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Topics: biomimicry, impeller, pax scientific

Thermal Stratification Inside Water Storage Tanks [VIDEO]

Posted by Lily Kaiserman on 8/6/12 12:36 PM

Record-setting heat waves are sweeping the country this summer, placing higher-than-usual demand on water utilities. High water use by consumers typically translates into high turnover in water storage tanks, giving water less time to age and stagnate within the tank. However, areas with large capacity tanks or low summer demand can suffer from thermal stratification inside water storage tanks and serious water quality problems.

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Topics: active tank mixing, eliminate stratification, stratification, low turnover

Top Five Mixing Questions from ACE12 in Dallas

Posted by Lily Kaiserman on 6/20/12 1:26 PM

PAX Water Technologies had a great time in Dallas at ACE12 last week – our new THM Removal System (TRS) was featured at the New Product Technology Showcase and we fielded many great questions from ACE12 attendees at our booth. We always appreciate the opportunity to hear directly from operators and engineers about their water quality challenges.   

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Topics: active tank mixing, PAX Water Mixer, mixer case studies, ace 2012

THM Removal for Stage 2 Compliance [VIDEO]

Posted by Lily Kaiserman on 5/24/12 12:54 PM

The Stage 2 DBP rule is here and presenting tough choices for water system operators. Upgrades to the treatment plant are expensive and constrained by existing infrastructure. Changing disinfectants can also be expensive and difficult to sell to a wary board and community.

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Topics: PAX Water Technologies, drinking water quality, in-tank aeration, THM removal, dbp formation

Five Mixing MythBusters

Posted by Lily Kaiserman on 5/7/12 12:46 PM

Charles Fishman (author of The Big Thirst) wrote a piece for the Washington Post last month on “Five Myths About Water.” Number two on Charles’ myth list is “bottled water is better than tap water,” where he unveils that tap water is actually MORE closely monitored than bottled water and that in blind taste tests “people can’t reliably pick bottled from tap.” At PAX Water, Charles’ article got us thinking about some of the myths we’re trying to bust in the drinking water industry. Here are our top five:

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Topics: active mixing, eliminate stratification, drinking water quality, PAX Water Mixer, storage tanks, water circulation, passive mixing, mixing systems, low turnover

Active vs. Passive Mixers – 3 Common Misperceptions

Posted by Lily Kaiserman on 4/23/12 12:35 PM

Just as electronic technologies have improved with time, technologies in the water distribution system have evolved from large and expensive pieces of equipment into smaller and more efficient solutions. Developed in the ‘80s, passive mixing systems use bulky nozzles with one-way valves to squirt water in different directions during the fill cycle. Because these mixers rely on the momentum of influent water, passive systems do not mix water once the tank is full or during the drain cycle and tanks re-stratify once the infill has stopped. A common workaround is forcing tank operators into a minimum turnover rate (which is both energy-intensive and expensive).

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Topics: PAX Water Technologies, active tank mixing, active mixing for water storage tanks, PAX Water Mixer, passive mixing

Nitrification Risk Can Be Reduced by Active Mixing

Posted by Peter Fiske on 11/16/10 12:19 PM

The AWWA Distribution System Water Quality Committee is embarking on revisions to their M56: Fundamentals and Control of Nitrification in Chloraminated Drinking Water Distribution Systems.  The M56 manual is a complete guide to managing nitrification and is intended to be a principal technical resource for water system operators throughout the US.

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Topics: active mixing, nitrification, eliminate nitrification, biofilms

Top Mixing Questions from the ASDWA Conference in Pittsburgh

Posted by Karen Losee on 10/26/10 4:35 PM

PAX Water Technologies presented a technical talk at the 25th annual Association of State Drinking Water Administrators meeting last week in Pittsburgh, PA entitled Stabilization and Improvement of Distribution System Water Quality in Reservoirs and Tanks – a Key to Stage 2 Compliance.

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Topics: active mixing, disinfectant residual, high water age, dbp formation

Top Mixer Questions from AWWA's Storage Tank Water Quality Webinar

Posted by Peter Fiske on 10/14/10 8:13 PM

The AWWA held a webinar on October 6, 2010 entitled Sustainable Water Quality Management within the Storage Tank: Part 2 (you can listen to a rebroadcast here).

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Topics: active mixing, storage tanks, WaterMix, biofilms, mixing systems

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