Influence of bromide and iodide on the formation of disinfection by-products in drinking water treatment

In Italian drinking water treatment plants (DWTP), the problem of chlorination by-products control is very important as the Italian drinking water regulations (Dlgs. 31/2001, as enactment of the CEU directive 98/83) set very strict limits for these compounds. A possible strategy for controlling the concentrations of DBPs (disinfection by-products) is the application of treatment processes able to reduce the concentration of dissolved organic matter, the main precursor of DBPs, before the dosage of chlorine-based disinfectants. Recently, ion exchange resins for the removal of dissolved organics have shown several applications in drinking water treatment. In this experimental study, the treatment with ion exchange resins MIEX®DOC and the treatment with GAC (granular activated carbon) were evaluated for the removal of dissolved organics. Moreover, the effects of MIEX® pre-treatment on the subsequent GAC filtration phase were evaluated, with particular attention to the effects on the life-time of the GAC filter. The GAC filter operation was simulated by rapid small scale column tests (RSSCT), which allow the evaluation of the GAC breakthrough curve in a shorter time with respect to a full plant and pilot plant trials. On the basis of the experimental results, the ion exchange process was very efficient in dissolved organics removal (60–70% UV254 removal). Moreover, the results indicated that the application of ion exchange resins as pre-treatment in a conventional drinking water treatment train could increase the filter life-time in the subsequent GAC adsorption phase (about 200%) resulting in potentially important cost benefits for the overall treatment process.

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Progress on Drinking Water Treatment with Chlorine Dioxide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.848.255 ◽

2013 ◽

Vol 848 ◽

pp. 255-258 ◽

Cited By ~ 1

Author(s):

Yu Zhong Guo ◽

Yan Zhen Yu ◽

Ming Li ◽

Guang Yong Yan

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Chlorine Dioxide ◽

Drinking Water Treatment ◽

Water Disinfection ◽

Water Quality Standards ◽

Water Pretreatment ◽

Detection Technology ◽

Filter Water ◽

By Products

By the reason of strong responses activity and oxidation ability, Chlorine dioxide as oxidant and disinfectant has been applied to peroxidation and disinfection more and more widely.In this paper, it give an account of the preparation of chlorine dioxide, as oxidants to raw water pretreatment, used in filter water disinfection ,the detection technology of chlorine dioxide and disinfection by-products, the water quality standards formulated by domestic and overseas chlorine dioxide in using chlorine dioxide, and summarized progress on drinking water treatment with chlorine dioxide .

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Speciation and seasonal variation of various disinfection by-products in a full-scale drinking water treatment plant in East China

Water Science & Technology Water Supply ◽

10.2166/ws.2019.026 ◽

2019 ◽

Vol 19 (6) ◽

pp. 1579-1586 ◽

Cited By ~ 1

Author(s):

Xiang-Ren Zhou ◽

Yi-Li Lin ◽

Tian-Yang Zhang ◽

Bin Xu ◽

Wen-Hai Chu ◽

...

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Treatment Plant ◽

Drinking Water Treatment ◽

Water Treatment Plant ◽

Full Scale ◽

East China ◽

Raw Water ◽

Drinking Water Treatment Plant ◽

By Products

Abstract The objective of this research was to study the occurrence and seasonal variations of disinfection by-products (DBPs), including traditional carbonaceous and emerging nitrogenous DBPs, in a full-scale drinking water treatment plant (DWTP) for nearly 2 years. The removal efficiencies of each DBP through the treatment processes were also investigated. This DWTP takes raw water from the Yangtze River in East China. The quality of the raw water used in this DWTP varied with different seasons. The results suggested that DBP concentrations of the finished water were higher in spring (82.33 ± 15.12 μg/L) and summer (117.29 ± 9.94 μg/L) with higher dissolved organic carbon (DOC) levels, but lower in autumn (41.10 ± 5.82 μg/L) and winter (78.47 ± 2.74 μg/L) with lower DOC levels. Due to the increase of bromide concentration in spring and winter, more toxic brominated DBPs increased obviously and took up a greater proportion. In this DWTP, DBP concentrations increased dramatically after pre-chlorination, especially in summer. It is noteworthy that the removal of DBPs during the subsequent treatment was more obvious in spring than in the other three seasons because the pH value is more beneficial to coagulation in spring.

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Occurrence and fate of ozonation by-products at a full-scale drinking water treatment plant

The Science of The Total Environment ◽

10.1016/j.scitotenv.2014.02.069 ◽

2014 ◽

Vol 481 ◽

pp. 392-400 ◽

Cited By ~ 34

Author(s):

A. Papageorgiou ◽

D. Voutsa ◽

N. Papadakis

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Treatment Plant ◽

Drinking Water Treatment ◽

Water Treatment Plant ◽

Full Scale ◽

Drinking Water Treatment Plant ◽

By Products

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Seasonal evaluation of the presence of 46 disinfection by-products throughout a drinking water treatment plant

The Science of The Total Environment ◽

10.1016/j.scitotenv.2015.02.070 ◽

2015 ◽

Vol 517 ◽

pp. 246-258 ◽

Cited By ~ 37

Author(s):

Maria Serrano ◽

Isabel Montesinos ◽

M.J. Cardador ◽

Manuel Silva ◽

Mercedes Gallego

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Treatment Plant ◽

Drinking Water Treatment ◽

Water Treatment Plant ◽

Drinking Water Treatment Plant ◽

By Products

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Effect of advanced oxidation processes on nonylphenol removal with respect to chlorination in drinking water treatment

Water Science & Technology Water Supply ◽

10.2166/ws.2010.726 ◽

2010 ◽

Vol 10 (1) ◽

pp. 51-57 ◽

Cited By ~ 3

Author(s):

R. Mosteo ◽

N. Miguel ◽

P. Ormad Maria ◽

J. L. Ovelleiro

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Natural Organic Matter ◽

Natural Water ◽

Advanced Oxidation Processes ◽

Drinking Water Treatment ◽

Advanced Oxidation ◽

Total Removal ◽

Oxidation Processes ◽

By Products

Any nonylphenol compounds found in water have to be removed since they are endocrine disruptors. In this study, natural water from the river Ebro fortified with nonylphenol compounds (4n-nonylphenol and technical nonylphenol) is used as a sample in order to simulate a real situation in drinking water treatment plants. The aim is to compare conventional disinfection with advanced oxidation processes (O3, O3/H2O2, O3/TiO2 and O3/H2O2/TiO2) used for the removal of nonylphenol compounds present in natural water. Furthermore, a study is carried out of the by-products (THMs) generated as a consequence of the presence of natural organic matter. Preoxidation by chlorine completely oxidizes 4n-nonylphenol and technical nonylphenol. It can be seen that the best of the advanced oxidation processes is the O3/H2O2, achieving an average oxidation of 55%, although the differences among the processes were not very significant. Furthermore, the use of post-chlorination guarantees the total removal of nonylphenol compounds.

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MANAGING AND MODELING OF THE DRINKING WATER TREATMENT PLANT SLUDGE

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v5.i2.2017.1719 ◽

2017 ◽

Vol 5 (2) ◽

pp. 168-179

Author(s):

M. Farhaoui

Keyword(s):

Sustainable Development ◽

Drinking Water ◽

Water Treatment ◽

Water Resources ◽

Treatment Plant ◽

Drinking Water Treatment ◽

Water Treatment Plant ◽

Water Sources ◽

Water Treatment Process ◽

By Products

Water management is a key pillar of sustainable development. Indeed, the rational use of water has become a condition for new investments in the water sector as many sectors. Optimizing the production of drinking water is one aspect. This optimization involves not only the choice of water resource use but also the management of by-products of the water treatment process to manage sustainably the exploited water resources. The city of Meknes is watered from two sources and a set of holes (14), the turbidity of water sources can vary depending on rainfall recorded in the region. A water treatment plant (600 l/s) was performed for the purification of water sources. Through this study, we focus on modeling of sludge volume produced by this plant. The objective is to design a model for calculating the sludge volume from the actual data recorded in the plant. The model ca be used by the operator to predict the sludge volume and can be used also by the designers. The results of this study demonstrated that the volumes calculated from the model constructed considering the data recorded at the station perfectly match the volumes produced with a determination coefficient of 100%. The application of this model can not only provide the operator with an effective tool for managing of the station by-products but also to provide designers with a formula to prevent over/under design of structures. Therefore, these measures help to optimize the cost of production of drinking water and will play an important role in the sustainable development of water resources.

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