Characterization of aquatic humic substances to DBPs formation in advanced treatment processes for conventionally treated water

Kim, Hyun-Chul; Yu, Meilin

doi:10.1016/j.jhazmat.2006.09.063

Cited by 92 publications

(35 citation statements)

References 15 publications

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“…Kim and Yu (2007) reported that the ratio UV 253 /UV 203 reflects the tendency for the formation of disinfection by-products during water treatment. This ratio is expected to be low for unsubstituted aromatic ring structures and high for aromatic rings highly substituted with hydroxyl, carboxyl, ester, and carbonyl groups (Kim and Yu 2007;Korshin et al 1997).…”

Section: Uv Absorbance and Suvamentioning

confidence: 99%

Fate of natural organic matter at a full-scale Drinking Water Treatment Plant in Greece

Papageorgiou

Papadakis

Voutsa

2015

Environ Sci Pollut Res

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The aim of this study was to investigate the fate of natural organic matter (NOM) and subsequent changes during the various treatment processes at a full-scale Drinking Water Treatment Plant (DWTP). Monthly sampling campaigns were conducted for 1 year at six sites along DWTP of Thessaloniki, Northern Greece including raw water from the Aliakmonas River that supplies DWTP and samples from various treatment processes (pre-ozonation, coagulation, sand filtration, ozonation, and granular activated carbon (GAC) filtration). The concentration of NOM and its characteristics as well as the removal efficiency of various treatment processes on the basis of dissolved organic carbon, UV absorbance, specific ultra-violet absorbance, fluorescence intensity, hydrophobicity, biodegradable dissolved organic carbon, and formation potential of chlorination by-products trihalomethanes (THMs) and haloacetic acids (HAAs) were studied. The concentration of dissolved organic carbon (DOC) in reservoir of the Aliakmonas River ranged from 1.46 to 1.84 mg/L, exhibiting variations regarding UV, fluorescence, and hydrophobic character through the year. Along DWTP, a significant reduction of aromatic, fluorophoric, and hydrophobic character of NOM was observed resulting in significant elimination of THM (63%) and HAAs (75%) precursors.

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Section: Uv Absorbance and Suvamentioning

confidence: 99%

Fate of natural organic matter at a full-scale Drinking Water Treatment Plant in Greece

Papageorgiou

Papadakis

Voutsa

2015

Environ Sci Pollut Res

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“…NOM is ubiquitous in natural water and acts as the major precursor for DBPs in drinking water (Kim and Yu, 2007;Tian et al, 2013). Upon UV and chlorine coexposure, NOM may be attacked simultaneously by free chlorine species and different radicals (such as OH and Cl).…”

Section: Introductionmentioning

confidence: 99%

“…The contamination of HA not only affects the odor, color and taste of water, but also prevents the adsorption of target substances, and forms complexes with heavy metals and micropollutants (Li and Korshin, 2002;Ates et al, 2007). Importantly, in the presence of chlorine radicals with strong oxidizing abilities, HA has been found to be an important precursor for the formation of DBPs (Kim and Yu, 2007;Philippe et al, 2010). Upon UV and chlorine co-exposure, the interactions between HA molecules and radicals further complicate the reactions.…”

Section: Introductionmentioning

confidence: 99%

Transformation of humic acid and halogenated byproduct formation in UV-chlorine processes

Jiang

et al. 2016

Water Research

178

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a b s t r a c tThe synergistic effect of ultraviolet light (UV) and chlorine on the structural transformation of Humic Acid (HA) and formation of chloro-disinfection byproducts (DBPs) in water were investigated, with chlorination as a reference. The transformation and mineralization of HA were enhanced upon coexposure to UV and chlorine. Electron spin resonance (ESR) studies revealed that hydroxyl radical ( OH) and chlorine radical ( Cl) were predominant active species in a pH range from 4 to 7, while Cl dominated at pH 2 and pH higher than 7. The impact of different radicals on the transformation of HA was investigated by UV 254 , fluorescence and TOC measurements.OH were found to be responsible for the removal of chromophoric groups and mineralization of HA, while Cl mainly reacted with HA and intermediates from HA degradation. Due to the competitive and synergistic reaction of OH and Cl with HA, higher removal of HA and lower formation of chloro-DBPs appeared in UV-chlorine than chlorination, thus the combined UV-chlorine processes should be a promising method for water purification.

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“…About 500 different disinfection products are known, most of which are haloacetic acids (HAA) and trihalomethanes (THMs), showing mutagenic and carcinogenic effects for human and animal organisms (Rosińska and Rakocz 2013, Adamski and Szlachta 2011, Grzegorczuk--Nowacka 2011. Consequently, the removal of natural organic materials is a key operation in the development and operation of water treatment processes intended for human consumption (Kim and Yu 2007). Coagulation and adsorption on activated carbon is used for the removal of these substances from water, which involves the formation of biofi lm on the surface thereof (Meinel et al 2010, Jasper et al 2010, Kovalova et al 2013, Holc et al 2016.…”

Section: Introductionmentioning

confidence: 99%

The use of activated carbons for removing organic matter from groundwater

Kaleta¹,

Kida²,

Koszelnik³

et al. 2017

Archives of Environmental Protection

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Abstract:The article presents research results of the introduction of powdery activated carbon to the existing technological system of the groundwater treatment stations in a laboratory, pilot plant and technical scale. The aim of the research was to reduce the content of organic compounds found in the treated water, which create toxic organic chlorine compounds (THM) after disinfection with chlorine. Nine types of powdery active carbons were tested in laboratory scale. The top two were selected for further study. Pilot plant scale research was carried out for the fi lter model using CWZ-30 and Norit Sa Super carbon. Reduction of the organic matter in relation to the existing content in the treated water reached about 30%. Research in technical scale using CWZ-30 carbon showed a lesser effi ciency with respect to laboratory and pilot-plant scale studies. The organic matter decreased by 15%. Since fi ltration is the last process before the individual disinfection, an alternative solution is proposed, i.e. the second stage of fi ltration with a granular activated carbon bed, operating in combined sorption and biodegradation processes. The results of tests carried out in pilot scale were fully satisfactory with the effectiveness of 70-100%.Unauthenticated Download Date | 5/12/18 2:33 AM

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Characterization of aquatic humic substances to DBPs formation in advanced treatment processes for conventionally treated water

Cited by 92 publications

References 15 publications

Fate of natural organic matter at a full-scale Drinking Water Treatment Plant in Greece

Fate of natural organic matter at a full-scale Drinking Water Treatment Plant in Greece

Transformation of humic acid and halogenated byproduct formation in UV-chlorine processes

The use of activated carbons for removing organic matter from groundwater

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