Articles

Water disinfection is a key step in water treatment for the wastewater and drinking water industries. Disinfection renders dangerous pathogens inert, preventing disease. While every water utility has its own method for disinfecting water, chlorine and monochloramine are two of the most common chemicals used for water disinfection. Many people are familiar with chlorine, but…

September 2022 Water Testing for Everyone As protecting the environment becomes an increasingly popular topic, more of us are wanting to get involved. When searching for ways to get involved many people think of litter clean up, recycling, and conservation efforts, but many may not be aware how they can make a difference by testing…

The Application of Oxidants in Seawater November 2021 Seawater Disinfection The disinfection of seawater is required for numerous applications, including desalination, ballast water, aquaculture, seawater pools/spas, and in cooling towers. Each application has specific considerations that are best met by a particular disinfectant, usually an oxidant. The oxidants include chlorine, bromine, chlorine dioxide, ozone, peracetic…

Alkalinity of Natural Waters The alkalinity of water is a measurement of its buffering capacity, which is its ability to neutralize acid or to resist acidification. In contrast, pH is a logarithmic scale for expressing Hydrogen (H+) ion concentration. A solution of pH 7.0 is considered to be neutral, whereas a solution above pH 4.5…

What is DEHA? Dissolved oxygen in boiler system water causes corrosion and pitting of metal surfaces, which can lead to boiler inefficiency, equipment failure, and system downtime. N,N-Diethylhydroxylamine (C2H5)2NOH, or DEHA, is a volatile amine commonly used for oxygen scavenging in a variety of boiler systems. Hydrazine was once in widespread use as a boiler…

Introduction Oxygen demand measurements are used to estimate water pollution levels entering and leaving wastewater treatment and industrial facilities. Particularly close attention is paid to effluents as high oxygen demand levels indicate a danger to aquatic life. Since treatment facilities are considered point sources, they are regulated under the Clean Water Act (CWA) which in…

Introduction Use of Film Forming Amines (FFA) or Film Forming Amine Product (FFAP) is a growing trend in the power industry for maintenance of boiler systems. Case study literature suggests that filming amines can serve as corrosion inhibitors, reduce corrosion product transport, provide smooth heat transfer surfaces, and protect equipment during shutdown or layups. FFAPs…

As water-based industries continue to expand and evolve, the need for water analysis grows with them. New regulations and market dynamics shift the testing needs to lower cost, more precise readings, and faster reporting. Companies look to high-tech advancements like smart meters and on-line analyzers for efficiency and accuracy but continue to rely on proven…

    Congratulations to researchers at China’s Dalian Polytechnic University and the School of Environmental Science and Engineering at Shandong University. Utilizing CHEMetrics COD water analysis test kits, they recently determined nanogels may be applied to treat pulp bleaching water in a way that makes current wastewater treatments more efficient and environmentally sustainable. Thanks to…