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Ron Hofmann IUVA President & University of Toronto Professor Water treatment using ultraviolet (UV) light has been around for many years, and it is a robust and effective technology. That being said, there are still many unknowns about its…
In January, Baltimore became the first major U.S. city to enact a water affordability and equity law aimed at helping the most marginalized citizens have access to affordable water. This Baltimore bill—the Water Accountability & Equity Act—stages…
Numbers paint a dire picture of water consumption in Las Vegas. The metropolitan region has a population of 2.2 million, and the average household uses 222 gallons of water per day. That results in approximately 489 million gallons of daily water…
The city of Corpus Christi Greenwood Wastewater Treatment Plant (WWTP) uses ultraviolet (UV) light for disinfecting its effluent discharge. Originally permitted for  E. coli, the parameter was changed when Texas aligned its discharge parameters to the U.…
More than 100 years ago, it was discovered that a specific wavelength of ultraviolet (UV) light could disrupt the DNA of many microorganisms. This made UV an ideal clean way to purify substances, especially water. From major cities, like New York and…
The city of Decatur, Arkansas, wanted to increase capacity at its wastewater treatment plant. It also needed a new system for supervisory control and data acquisition (SCADA). Not shy about using advanced technologies, the city now has the first membrane…
The accurate process measurement of free chlorine, total chlorine and chlorine dioxide is essential to the successful operation of municipal and industrial water treatment systems that rely on this chemical for water disinfectant purposes, bleaching,…
For municipal water authorities, pre-filtration of water is critical to protect and extend the life of membrane systems, as well as increase intervals between backwashing or necessary maintenance.  Pressure-driven membrane systems utilize thin, porous…
On the surface, it might seem that knowing when to replace the membrane elements in a reverse osmosis (RO) system would be simple. In attempting to keep it simple, many companies will use one or more of the following guidelines for replacing their…
Located in Suffolk, Virginia, Hampton Roads Sanitation District’s  (HRSD) Nansemond Treatment Plant is devoted to using fats, oils & grease (FOG) separation technology to advance its processes.  Serving Smithfield and Isle of Wight County, as well as…
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