Officials in Los Angeles have grown tired of importing water, which is an expensive, unsustainable response to the region's persistent drought. The smarter solution, they concluded, is to reuse local resources through advanced purification and aquifer recharge. But how do you ensure safety and efficiency before committing to a treatment technology? A unique piloting tool from Xylem’s Wedeco brand offered the city clear answers.
As municipalities look to make their water and wastewater treatment equipment run longer with fewer operational staff on payroll to maintain the equipment, having a reliable aftermarket parts and service provider becomes essential.
Calcium hypochlorite is one method of disinfecting water and wastewater. In this Water Online Radio interview, Lou Finelli, Municipal Key Account Sales Manager for Lonza, compares calcium hypochlorite with other disinfectants such as chlorine gas, sodium hypochlorite and UV.
Polymer activation through proper hydration of the polymer particle is critical in water clarification or sludge dewatering applications. According to Jeff Rhodes, Vice President of Commercial Development for UGSI Solutions, “the key is to have a high energy zone at the moment of initial welding, when the polymer and the water come together.”
Over the past two years, no groundwater issue has perhaps received as much community focus and attention as polyfluoroalkyl and perfluoroalkyl substances like PFOA and PFOS, often referred to as perflourinated compounds (PFCs). The U.S. EPA issued a health advisory, limiting the amount of these compounds to 70 parts/trillion which kicked off a nationwide evaluation of local water sources.
Rick VanSant, President and CEO of UV Pure Technologies, explains some of the key trends currently shaping the water and wastewater market, including non-chemical disinfection, remote management, and urbanization.
Daryl Weatherup, Director of Marketing for Evoqua’s Wallace & Tiernan brand, recently sat down with Water Online Radio to discuss disinfection management, residuals, dosing, disinfection byproducts (DBPs), chlorination and the latest technological advancements being announced at ACE16, including Evoqua’s acquisition of UV disinfection provider Neptune Benson.
Bill McDowell of Blue-White Industries, a supplier of chemical metering pumps and flow meters, recently sat down with Water Online Radio and explained the difference between peristaltic pumps and diaphragm pumps.
The operating ranges for chemical injection need to be large because of the variability of flow in many treatment operations. As Bill McDowell, Vice President of Operations with Blue White Industries explains in this Water Talk interview, “You might be down to as low as 5 or 10 milliliters a minute and then one hour later; you might need to pump 15 gallons a minute out of the same pump and through the same sensor.”
Jon McClean, President of Engineered Treatment Systems (ETS), explains how UV disinfection of wastewater provides an effective and sustainable solution to growing water shortages.
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