CONTAMINANT REMOVAL RESOURCES

• A Strong Track Record Of Innovative Iron And Manganese Treatment

  For many utilities, properly treating the iron and manganese in source water is critical to maintaining good customer relationships. When iron and manganese are present, they are often accompanied by arsenic contamination. Here are several examples of utilities that successfully installed treatment systems to address the trio of contaminants.

• A Better Approach To Iron And Manganese Removal

  The aesthetic impact of iron and manganese on finished water — altering its color, odor, and/or taste — is the top driver of municipal utility customer complaints. While there are well-established treatment processes for these contaminants, innovative medias can provide many benefits that traditional technologies lack. This includes lower capital and operating costs, as well as a smaller footprint in some cases.

• Big Ideas For Small Water Agencies Facing Chemical Contaminants In Drinking Water

  Who should pay, literally and figuratively, for chemical contamination of source water?

• Calculating ROI When Adding Zeta Potential To A Water Treatment Facility

  The application of zeta potential for the diagnosis and control of water treatment processes is not new. Research papers regularly cited on this subject date back decades and in fact most of the basic understanding of how zeta potential can be used to control coagulant dose remains similar to those early investigations. 

• Battling Biofilm

  Biofilms are extremely complex ecosystems that provide excellent protection for the microorganisms within. This often makes them difficult to kill, even with chlorine. Basic understanding of biofilm ecosystems and their behavior to chlorine and other oxidizing biocides can offer valuable insight into achieving better microbial control. 

• Shining A Light On Global Water Stress

  The word “unprecedented” is overused and often abused. Water stress, however — the situation in which the water resources in a region or country are insufficient for its needs — is today a major threat and we are in fact facing “unprecedented” challenges. Climate change is a big factor contributing to it, but it’s not the only factor. Without rapid changes in industrial water usage, it is predicted that within 10 years there will be a 40 percent global water deficit.

• Capitalizing On Evolving PFAS-Removal Options

  Granular activated carbon (GAC) and ion exchange (IX) resin have long histories in removing a variety of per- and polyfluoroalkyl substances (PFAS), known as ‘forever chemicals.’ But finding optimal treatment vessel and media efficiency depends on the specifics of the application. Here are some performance considerations of evolving options that can pay dividends for first-time and experienced PFAS removal operators alike.

• Implementing Granular Activated Carbon Systems: Important Design And Start-Up Considerations

  As granular activated carbon (GAC) is increasingly employed to treat PFAS, new practitioners can improve their results by knowing what to expect — thanks to data and experience acquired from prior installations.

• The Payoff From Improved Chemical Dilution

  Chemical dilution systems play a critical role in many municipal and industrial water treatment systems. However, older technology tends to be less reliable and accurate while being a drain on resources, whereas a more advanced solution can significantly improve performance and generate labor savings.

• New Toolkit Arrives Just In Time For HAB Season

  With harmful algal blooms (HABs) being forecast to increase, in part due to the effects of climate change, more water systems can expect to face problematic cyanotoxin conditions more frequently and for more days per year. In its efforts to mitigate the negative effects of such increases, the U.S. EPA has enhanced its information resources for water utilities by issuing a new Cyanotoxins Preparedness and Response Toolkit (CPRT).