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Showing 1 to 17 of 17 for “"Disinfection Byproducts (DBPs)"”.
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PHOTOELECTROCATALYTIC OXIDATION OF MUNICIPAL REVERSE OSMOSIS CONCENTRATE
… in ROC raised the concern of halogenated disinfection byproducts (DBPs), trihalomethanes and haloacetic acids. The results show that PEC could be an economically viable alternative for ROC treatment with proper control of DBPs formation.
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Critical review of disinfection by-products (DBPs) in fresh produce and process water
Disinfection is one of the most significant steps to guarantee the quality, safety, and shelf-life of fresh and fresh-cut produce in food processing industry. However, the disinfectant can react with the organic matter in produce and water, leading to the formation of disinfection byproducts …
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Management of disinfection byproduct production in small drinking water systems
… OF MISSOURI AT AUTHOR'S REQUEST.] Two groups of disinfection byproducts (DBPs) currently regulated in drinking water are trihalomethanes (THMs) and haloacetic acids (HAAs). The objective of this research was to better understand how the water treatment processes employed at four smaller municipal …
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Comparing Ferrous Chloride and Ferrous Sulfate as Secondary Coagulants at the Beaver Water District Drinking Water Treatment Plant
… of trihalomethanes, a regulated group of organic disinfection byproducts (DBPs). Because ClO2 is reduced to chlorite (ClO2-), a regulated inorganic DBP, BWD incorporated ferrous salt into their coagulation regime to quench chlorite to chloride. In this study, two ferrous salts - ferrous chloride …
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Assessing Biofiltration without Ozonation for Removal of Trihalomethane Precursors in Drinking Water at the Beaver Water District Drinking Water Treatment Plant
… (NOM) fractions that serve as precursors of disinfection byproducts (DBPs), which include the four regulated trihalomethanes (THMs) and dichloroacetonitrile (DCAN). Rapid small-scale column tests (RSSCTs) and Pilot Plant filters operated at empty-bed contact times (EBCTs) of 4, 8, and 16 …
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The Minus Approach to Redefine the Standard of Practice of Drinking Water Treatment: Philosophy and Case Studies on the Adsorption of Per- and Polyfluoroalkyl Substances onto Powder Activated Carbon and Membrane Surfaces
… contaminants (KUECs) and also create toxic disinfection byproducts (DBPs) in-situ. Although finished drinking water is usually compliant with permitting standards, numerous questions arise regarding its ultimate safety for human consumption. This work introduces the philosophy of the “Minus …
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Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.
… to evaluate the sorption characteristics of six disinfection byproducts (DBPs) on four sorbents. To investigate sorption of volatile organic compounds (VOCs), specially designed experimental batch and continuous flow modules were developed. The investigated compounds included: chloroform, …
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Wildfire Impacts on Water Quality and Implications for Disinfection Byproduct Formation
… various aspects of water treatment, including disinfection. The addition of disinfectants, such as chlorine, to water containing wildfire-affected DOM has been shown to increase concentrations of the regulated disinfection byproducts (DBPs) known as trihalomethanes (THMs) and haloacetic acids …
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Effect of pH and Temperature on Halogenated DBPs
… infections and viral infections. The water disinfection process is one of the most important environmental technological advances in the 20th century which inactivates microbial contaminants in drinking water. Disinfection byproducts (DBPs) are a group of chemical compounds formed from the …
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Total N-nitrosamine Precursor Adsorption with Carbon Nanotubes: Elucidating Controlling Physiochemical Properties and Developing a Size-Resolved Precursor Surrogate
… treatment plant (WWTP) effluent, formation of disinfection byproducts (DBPs) – such as trihalomethanes (THMs), dihaloacetonitriles (DHANs), and N-nitrosamines – during water treatment may also increase. N-nitrosamines may comprise the bulk of the chronic toxicity in treated drinking waters …
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Cytotoxicity and Mutagenicity of Disinfection Byproduct Mixtures Formulated Using Free Chlorine and Monochloramine
… various toxicity endpoints of drinking water disinfection byproducts (DBPs), but an emphasis on single compounds prevails. In this research, DBP mixtures were assessed using a cytotoxicity test with Chinese Hamster Ovary (CHO) cells and an Ames fluctuation test with Salmonella typhimurium …
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Advanced Technologies for Resource Recovery and Contaminants Removal from Landfill Leachate
… This led to the investigation of harmful disinfection byproducts (DBPs) formation during Fenton's oxidation of landfill leachate. The removal of leachate UV-quenching substances (humic, fulvic, and hydrophilic acids) using an MFC and a chemical oxidant (i.e., sodium percarbonate) with a …
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Mechanisms of monohalogenated acetic acid induced genomic DNA damage
Disinfection of drinking water stands among the greatest public health achievements in human history. Killing or inactivation of pathogenic microbes by chemical oxidants such as chlorine, chloramine, or ozone have greatly reduced incidence of waterborne diseases. However, the disinfectant also …
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The Chlorination of Pharmaceuticals and Other Phenolic Compounds in the Presence of Iodide
… PPCPs are already known to form a variety of disinfection byproducts (DBPs) when oxidized by free chlorine, including trihalomethanes (THMs) and haloacetic acids (HAAs), many of which are known carcinogens. Salts, such as iodide, are also often present in natural water systems. Iodide is known …
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Oxidation of Disinfection Byproducts and Algae-related Odorants by UV/H₂O₂
… simultaneous removal of regulated halogenated disinfection byproducts (DBPs) and odorous aldehydic algal byproducts in the presence of geosmin and 2-methylisoborneol, which are earthy-musty odorants that commonly occur in drinking water. UV/H₂O₂ is an expensive advanced oxidation process that …
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Validating Pathogen Reduction in Ozone-Biofiltration Water Reuse Applications
… must also be balanced with the formation of disinfection byproducts (DBPs) through ozonation. Given the elevated concentration of dissolved organic matter, relatively higher ozone doses are required in reuse applications when compared with water treatment applications in order to achieve the …
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Water Quality Control in Distribution Systems: Bayesian Optimization & Physics-Informed Machine Learning
… while minimizing the formation of harmful disinfection byproducts (DBPs). Achieving this balance requires optimizing chlorine dosage strategies, both in terms of injection locations and dosing schedules, under complex, dynamic, and spatially distributed network conditions. Despite recent …