Results 161 to 170 of about 10,874 (209)
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Catalytic Degradation of Trihalomethanes
1984Abstract : The chlorination of waters containing humic and other organic substances leads to the formation of trihalomethanes (THMS). These compounds are suspected carcinogens and pose a health hazard. Their formation and removal after chlorination is of interest to the Army because of the exclusive use of hypochlorite for disinfection.
Michael Burns +2 more
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Trihalomethane formation in whirlpool SPAs
Water Research, 1987Abstract In a survey of 25 whirlpool spas using halogen disinfectants, the only organohalide contaminant observed in the water and in the air at concentrations in excess of 1 μg l−1 (water) and 1 μg m−3 (air) was the trihalomethane corresponding to the disinfectant used.
Frank M. Benoit, R. Jackson
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Evaluating GAC for Trihalomethane Control
Journal AWWA, 1991The primary objectives of this study were to optimize granular activated carbon (GAC) treatment to meet more stringent trihalomethane (THM) standards, to estimate the costs of optimized GAC treatment, to identify by‐products of the final disinfection of GAC‐treated water, and to assess the ability of the rapid small‐scale column test (RSSCT) to ...
Michael J. McGuire +5 more
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Storage Tank Aeration Eliminates Trihalomethanes
Opflow, 2008This article discusses an aeration process for reducing the trihalomethanes in a distribution system. This method was developed by the Solano Irrigation District of Suisun City, California in order to comply with disinfectant/disinfection byproducts regulations.
Carol Walfoort +2 more
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Ann Arbor Controls Trihalomethanes
Journal AWWA, 1984Many water treatment plants in the United States were not initially designed to control the formation of trihalomethanes as by‐products of existing disinfection practices. New methods were needed to meet the National Interim Primary Drinking Water Regulations for total trihalomethanes (TTHMs), so many water purveyors began modifying existing treatment ...
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Low trihalomethane formation in Korean drinking water
Science of The Total Environment, 2003Organics in water have the potential to generate harmful disinfection by-products (DBPs) such as trihalomethanes (THMs) during the chlorination process. To clarify the regulatory implications of Korean THMs levels which appear to be significantly lower than those in the US where the Stage 1 and 2 D/DBPs rule has been promulgated, the characteristics of
Jeyong, Yoon +3 more
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Toxicological aspects of trihalomethanes: a systematic review
Environmental Science and Pollution Research, 2019Chlorine is considered the most used chemical agent for water disinfection worldwide. However, water chlorination can lead to by-product generation which can be toxic to humans. The present study aimed to perform a systematic review on the toxicity of trihalomethanes (THMs) through bioindicators of cytotoxicity, genotoxicity, and mutagenicity.
Luciana, de Castro Medeiros +4 more
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Modelling trihalomethanes formation in water supply systems
Environmental Technology, 2013Chlorination is the most widely used method for disinfection of drinking water, but there are concerns about the formation of by-products, such as trihalomethanes (THMs), since the chronic exposure to them may pose risks to human health. For these reasons regulations fix maximum acceptable THMs levels throughout distribution networks, so it is very ...
Di Cristo C., Esposito G., Leopardi A.
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Pathways of trihalomethane uptake in swimming pools
International Journal of Hygiene and Environmental Health, 2004Chlorination of pool water leads to the formation of numerous disinfection by-products (DBPs), chloroform usually being most abundant. Bathers and pool guardians take up various amounts of DBPs by different pathways. Identification of different uptake paths is important in order to develop a technical strategy for swimming pool water treatment and to ...
Lothar, Erdinger +6 more
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Formation of trihalomethanes in foods and beverages
Food Additives & Contaminants: Part A, 2009Trihalomethanes (THMs) are suspected carcinogens and reproductive toxicants commonly found in chlorinated drinking water. This study investigates THM formation during the preparation of beverages and foods using chlorinated drinking water. A total of 11 foods and 17 beverages were tested. Under the experimental conditions, each food and beverage formed
A-T, Huang, S, Batterman
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