• The Menace Of Biofilm And How We Can Tackle It

    Why are living biofilm super-pathogens spreading in water systems, and what is the best way to defeat them?

  • Advanced Biological Filtration: A Multi-Barrier Approach To Complex Water/Wastewater Contaminant Removal

    Since Flint, Michigan, and other communities brought the issue of water safety to the headlines, even non-water professionals are familiar with common contaminants like lead and arsenic. But there remains some ambiguity around “emerging contaminants” that are now appearing in water supplies, particularly as regulations to mitigate them are under development with no clear guidelines yet available.

  • Understanding Options Key To Selecting Most Effective, Lowest Cost PFAS Solution

    Municipal water utilities throughout the U.S. are increasingly grappling with the need to address PFAS once it is detected in source water. Because standards are a moving target while treatment options are limited and can represent a massive expense, addressing PFAS can be especially challenging for small water systems. The key to finding an optimal solution requires a thorough investigation of solutions.

  • A Natural Approach To Algae Treatment And Prevention

    Operators of lakes, rivers, reservoirs, and other waterbodies commonly introduce harmful chemicals and other compounds — such as antibacterials and bleach — in an attempt to rid the water of problems such as algae and toxins. However, with beneficial bacteria it is possible to achieve a balance in water or discharge by reducing phosphorus and other key parameters naturally, thereby eliminating or drastically reducing the food source for algae.

  • Pros & Cons Of Sea Water Desalination Using Reverse Osmosis For Drinking Water

    Sea water desalination is unequivocally the future of drinking water production for coastal communities and island nations in current times of water scarcity. It is already used quite heavily in a few countries. Saudi Arabia, the United Arab Emirates, and the United States are the top three desalination producers of drinking water by capacity in the world followed by Australia, China, and Kuwait.

  • Pros And Cons Of The Advanced Oxidation Process

    In many water and wastewater treatment applications, there are a number of pollutants that are difficult to reduce by physical, chemical, or biological means alone. In more recent years, there has been a growing concern regarding pharmaceutical drugs in drinking water and aquatic environments. Pesticides get caught in runoff from farms into freshwater supplies. Personal care products are typically washed down the drain into whatever system they are linked to. Landfill leachate is a toxic cocktail of compounds that can leak into groundwater sources. Such contaminants fall into the category of micropollutants, because they are so small. Their size alone is part of the reason, they are so difficult to remove from water and wastewater by certain means. More efficient removal requires a more powerful oxidation process, this process is called an advanced oxidation process (AOP).

  • 4 Benefits Of Sodium Zeolite For Drinking Water Treatment

    Drinking water treatment systems have little room for error after treatment at the risk of public health. Use of treatment systems that effectively target and treat toxic and undesirable contaminants is essential to drinking water production. There are typically four stages in a standard drinking water treatment system process, coagulation/flocculation, sedimentation/clarification, filtration and disinfection. Sodium zeolite is typically utilized in the filtration systems within the filtration stage for optimal treatment performance.

  • Drinking Water Treatment Plant (DWTP) Filtration System For Arsenic Removal

    The Toquepala mine is a large copper mine in the Tacna Province in Peru, on the border with Chile and Bolivia. The mine is situated far from nearby towns and cities and is operated by between 800-900 employees living on-site.

  • Successful Piloting Of UV Advanced Oxidation On Long Island For 1,4-dioxane Treatment (Case Study)

    The New York State Department of Health has recognized the ultraviolet advanced oxidation process (UV AOP) as a treatment solution for 1,4-dioxane. For water providers located in Nassau County on Long Island, it was necessary to pilot UV AOP technology at the various wells requiring treatment in order to confirm treatment efficacy and obtain state approval.

  • An Economic Solution For Reducing Total Organic Carbon Levels In Surface Water Sources

    Removing total organic carbon (TOC) from drinking water is often a tricky proposition for municipal utilities that rely on surface water sources. Disinfection byproduct rules call for a percentage of removal instead of allowing a maximum contaminant level. Granular activated carbon is a cost-effective way to provide stability in TOC reduction for surface water sources and improve the quality of water in the distribution system.


  • SORB 33® ARS Series Arsenic Removal Systems – Pre-engineered For Faster Delivery And Simple Installation

    De Nora’s SORB 33® arsenic removal adsorber systems use our proven and effective arsenic removal media that removes arsenic to non-detect levels. Systems are pre-engineered for faster delivery times and simple installation.

  • NeoTech D438™

    The NeoTech D438™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

  • Ultraviolet Disinfection ETS-UV™ Systems

    Ultraviolet (UV) irradiation is used for multifunctional purposes.  UV is most commonly used as an environmentally friendly alternative to chemical disinfection. It’s one of the most effective methods for inactivating harmful pathogens such as Listeria, E.coli, Giardia and chlorine tolerant pathogens like Cryptosporidium.  UV is also used for removal of organic and inorganic contaminants, including chlorine, ozone and Total Organic Carbon (TOC).  UV used in conjunction with an Advanced Oxidation Process (AOP) will remove Compounds of Emerging Concerns (CEC's), Synthetic Organics (SO's), Endocrine Disruptor Compounds (EDC's) and Personal and Pharmaceutical Care Products (PPCP's), as well as various taste and odor compounds from water.

  • How Activated Carbon Works To Purify Air And Water

    The first step is to define the performance limiting factors in the application. For this application, most of the adsorber is used for MTBE adsorption in the ppb concentration range. Adsorption of BTEX, TBA, or humic acids or other total organic carbon (TOC) components are removed by the front end of the column.

  • Control Of Active Chlorine Disinfection By-Products (DBPs) Of Drinking Water Using The THM Plus Method

    Determining trihalomethane levels using standard analytical methods requires expensive equipment and highly qualified personnel, which also means that analysis costs are very high. For these reasons, trihalomethane analysis poses a serious problem for companies that supply drinking water. Read the full application note to learn how two drinking water laboratories improved quality control of water delivered to end users.


The city of Salem had a water scare in the summer of 2018.  A harmful algal bloom had threatened the quality of their drinking water.  They partnered with Casne Engineering and The Prediction Lab (TPL) to ramp up their data efforts to create advanced algorithms.  Now, using OCS (OSIsoft Cloud Services) they bring together a variety of data sources such as satellite images and lake measurements to predict water quality and proactively mitigate any potential issues.