Biodegradability of DBP precursors after drinking water ozonation
نویسندگان
چکیده
منابع مشابه
Evaluation of biodegradability of NOM after ozonation.
The major purpose of this study was to develop a simple procedure to describe the kinetics of biodegradation of natural organic matter (NOM) in drinking water and to use this procedure to evaluate changes in the concentration of biodegradable organic matter during ozonation and biotreatment. The proposed approach quantitatively describes the formation and removal of rapidly and slowly biodegrad...
متن کاملTowards reducing DBP formation potential of drinking water by favouring direct ozone over hydroxyl radical reactions during ozonation.
When ozonation is employed in advanced water treatment plants to produce drinking water, dissolved organic matter reacts with ozone (O3) and/or hydroxyl radicals (OH) affecting disinfection byproduct (DBP) formation with subsequently used chlorine-based disinfectants. This study presents the effects of varying exposures of O3 and •OH on DBP concentrations and their associated toxicity generated...
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Although experts agree more research is needed to investigate whether cell phone use can cause brain cancers, especially in children, a group of scientists, physicians, and public health specialists around the world are urging that simple precautionary measures be taken just in case. Environmental groups have also stepped up pressure for regulatory action, but very little has taken place in the...
متن کاملFabrication of catalytic membranes for the treatment of drinking water using combined ozonation and ultrafiltration.
The removal of disinfection byproducts and their precursors was investigated using a combined ozonation-ultrafiltration system. A commercial membrane was coated 20 or 40 times with iron oxide nanoparticles (4-6 nm in diameter). With this membrane, the concentration of dissolved organic carbon was reduced by >85% and the concentrations of simulated distribution system total trihalomethanes and s...
متن کاملOzonation of drinking water: part I. Oxidation kinetics and product formation.
The oxidation of organic and inorganic compounds during ozonation can occur via ozone or OH radicals or a combination thereof. The oxidation pathway is determined by the ratio of ozone and OH radical concentrations and the corresponding kinetics. A huge database with several hundred rate constants for ozone and a few thousand rate constants for OH radicals is available. Ozone is an electrophile...
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ژورنال
عنوان ژورنال: Water Research
سال: 2016
ISSN: 0043-1354
DOI: 10.1016/j.watres.2016.10.022