DRINKING WATER CASE STUDIES AND WHITE PAPERS

• Working Under Pressure: Making Reliable Repairs Without Going Off-Line

  Ever since the introduction of centralized water treatment and distribution systems, leaks have been the bane of their existence. Finding a way to make reliable repairs rapidly and without having to disrupt service goes a long way toward satisfying customer and utility concerns. Here are some strategies and tips for making the right choices easier, quicker, and less expensive, even in the midst of an emergency.

• Arsenic Removal Technologies Pros And Cons

  Arsenic removal is theoretically simple but small community water systems often struggle to find the right solution. This article compares three prominent arsenic removal technologies.

• Integrated Membrane Facility In The City Of Delaware, Ohio

  To better comply with the Long Term 2 Enhanced Surface Water Treatment Rule (LT2) the City of Delaware (Ohio) piloted Torayfil hollow-fiber PVDF membrane modules to treat surface water for their 7.2 mgd full-scale facility. After significant review of the data, cost, and other factors, the City and URS selected Toray to utilize in the full scale design. Read the full case study to learn more.

• Drought Solutions Around The World

  Extremely vulnerable to climate change and water insecurity, Singapore innovating its way to being a leader in sustainable water solutions.

• Rethinking Water: How Integrated Resource Management Can Solve the Global Scarcity Crisis

  In this article, discover how integrated resource management can reduce overall water demand by tailoring water use to its most appropriate application, thereby helping regions optimize their water portfolios.

• Understanding Flow And Pressure In Municipal Water Systems

  Effective pressure management is essential for reliable municipal water delivery, preventing pipe bursts, improving energy efficiency, and extending infrastructure life. Balancing flow and pressure, which are affected by factors like elevation and pipe integrity, is key to utility operations.

• Water Hammer 101

  Discover how the selection of the right valve can help to effectively prevent surge during pump start or water hammer during pump stop.

• Preventing Algal Blooms With A “Pinch Of Sugar”

  Have you ever walked or driven by a lake covered with a thick scum that looks like pea soup? This could be caused by blue-green algae, a cyanobacteria (“cyan” means “blue-green”) that is frequently found in freshwater ponds and lakes. Cyanobacteria are often confused with green algae because both can produce dense mats that may smell bad and hamper activities like swimming and fishing. However, unlike most green algae, blue-green algae can produce cyanobacterial harmful algal blooms (cyanoHABs). The highly potent toxins they make, called cyanotoxins, can harm people, animals, aquatic ecosystems, the economy, drinking water supplies, property values, and recreational activities.

• Sensor Technology For Control Of Activated Sludge Aeration

  Design routines and operation strategies for activated sludge aeration systems have traditionally been based on manual control. By Robert Smith, P.E., BCEE, Ph.D., YSI

• Tapping Into Big Savings With More Accurate Polymer Measurement

  Polymers, especially flocculants and other thickeners, can be a major headache for drinking water and wastewater treatment plant managers. Power costs aside, buying polymer often represents the biggest expense of the treatment train. Not only are polymers pricey, but their high level of viscosity also presents a challenge to reliable measurement in varying conditions and at different levels of demand.