Characteristics and trihalomethane formation reactivity of dissolved organic matter in effluents from membrane bioreactors with and without filamentous bulking

Xia, Chufan; Ma, Defang; Gao, Baoyu; Hu, Xinxiao; Meng, Yingjie; Kang, Shuyu; Zhang, Bei; Qi, Yuanfeng

doi:10.1016/j.biortech.2016.03.026

Cited by 19 publications

(4 citation statements)

References 19 publications

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“…The presence of salinity could lead to microbial metabolic disorders and potentially disrupt biofilm stability through EPS (Bassin et al, 2011). Additionally, changes in species and/or dominant microorganisms will lead to different physicochemical characteristics and abnormal conditions of the biological wastewater treatment system, which will definitely affect the property of effluent organic matter (EfOM) (Xia et al, 2016). EfOM mainly consists of particulate and dissolved organic compounds that persist through biological wastewater treatment system, and its release could bring biotoxicity like anti-estrogenic activity and genotoxicity to aquatic organisms (Chen et al, 2017b).…”

Section: Introductionmentioning

confidence: 99%

System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress

Wei

et al. 2018

Bioresource Technology

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The system performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress was conducted. It was found that the NH-N removal efficiency decreased from 98.4% to 42.0% after salinity stress increased to 20 g/L. Specific oxygen uptake rates suggested that AOB activity was more sensitive to the stress of salinity than that of NOB. Protein and polysaccharides contents showed an increasing tendency in both LB-EPS and TB-EPS after the salinity exposure. Moreover, EEM results indicated that protein-like substances were the main component in LB-EPS and TB-EPS as self-protection in response to salinity stress. Additionally, humic acid-like substances were identified as the main component in the effluent organic matter (EfOM) of partial nitrification biofilm, whereas fulvic acid-like substances were detected at 20 g/L salinity stress. Microbial community analysis found that Nitrosomonas as representative species of AOB were significantly inhibited under high salinity condition.

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Section: Introductionmentioning

confidence: 99%

System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress

Wei

et al. 2018

Bioresource Technology

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“…Another reason was the Cijanggel River contained greater fulvic acid than that the Cimahi River (Table 2), consistent the greater absorption ratio (A3/4>3.5) which confirmed the Cijanggel River have greater humification, aromaticity, and molecular weight of humic compounds (Artinger et al, 2000). DOM with lower molecular weight than humic compounds such as fulvic acid has been considered the main precursor of THMs (Hua et al, 2015;Marhaba and Van, 2000;Xia et al, 2016) DOM is reactive to electrophiles such as chlorine which is an electron-rich organic compound (Scully et al, 1988), leads to the greater formation of THMs.…”

Section: Thmfp Occurrencesmentioning

confidence: 67%

Characteristics of Dissolved Organic Matter and Trihalomethane Forming Potential Occurrence in Watersheds with Different Upstream Land Use

Dirgawati

Sururi

2023

Environ. Nat. Resour. J.

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Dissolved organic matter (DOM) is the most important natural organic matter (NOM) fraction which reacts with chlorine to form harmful trihalomethanes (THMs) in water bodies. The characteristics of DOM could be affected by land use in the catchment, hence comprehensive study to understand DOM in the water body is important. This study was conducted in two watersheds with different upper stream land use to determine: (1) water characteristics, total organic matter (TOM), and DOM quality and quantity based on optical and absorption properties; (2) fluorescence dissolved organic matter (FDOM) compounds; (3) TOM and DOM relationships; and (4) THMs forming potential (THMFP) in both watersheds. Samples were collected from the upper Cimahi and Cijanggel Rivers which are dominated by settlements and plantations, respectively. Water characteristics were determined by pH, electroconductivity (EC), nitrite, and nitrate in unfiltered and filtered samples. TOM and DOM were characterized by chemical oxygen demand (COD) and chromophoric DOM (CDOM) parameters (A254, A355, A3/4), and organic compounds were determined as FDOM compounds. The measured pH, nitrate, and nitrite in the settlements-impacted watershed were greater than those in the plantations-impacted watershed. The main FDOM compounds in the settlement-impacted river were tryptophan microbial byproduct (T1) and tryptophan aromatic protein (T2), fulvic acid (A), and humic acid (C). Meanwhile, in the plantations-impacted river were T1, A, and C. THMFP was detected in both rivers which were greater in the plantations-impacted watershed than the settlements-impacted watershed.

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“…For instance, polysaccharides, one of the major components of SMPs, were reported to have low THM and HAA yields upon chlorination due to the low reactivity of aliphatic and alcohol groups toward chlorine (Bond et al, 2009a;Bond et al, 2009b;Hong et al, 2008). A recent study reported that increased production of polysaccharides led to a higher proportion of hydrophilic organics in DOM and ultimately contributed to the substantial decrease (>80%) in THM formation reactivity (Xia et al, 2016). Moreover, Hong et al (2009) found that the THM yields of 20 selected amino acids were rather low except for tyrosine and tryptophan.…”

Section: Effect Of Od and Aao Processes On Cl-dbp Formationmentioning

confidence: 99%

Effect of oxidation ditch and anaerobic-anoxic-oxic processes on CX3R-type disinfection by-product formation during wastewater treatment

Lin

Wang

Zhang

et al. 2021

Science of The Total Environment

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Biological treatment enhanced the formation of a series of DBPs, especially Br-DBPs. • Biological treatment reduced the DOC and UV 254 but increased the DON and SUVA. • Biological treatment increased the DON/ DOC ratio and bromide/DOC ratio. • SMP-and humic acid-like matters increased significantly after OD and AAO treatment. • High MW fractions were transformed into low MW fractions after OD and AAO processes.

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Characteristics and trihalomethane formation reactivity of dissolved organic matter in effluents from membrane bioreactors with and without filamentous bulking

Cited by 19 publications

References 19 publications

System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress

System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress

Characteristics of Dissolved Organic Matter and Trihalomethane Forming Potential Occurrence in Watersheds with Different Upstream Land Use

Effect of oxidation ditch and anaerobic-anoxic-oxic processes on CX3R-type disinfection by-product formation during wastewater treatment

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