Effects of changing supply water quality on drinking water distribution networks: Changes in NOM optical properties, disinfection byproduct formation, and Mn deposition and release

Kurajica, Livia; Bošnjak, Magdalena Ujević; Kinsela, Andrew S.; Štiglić, Jurica; Waite, T. David; Capak, Krunoslav; Pavlić, Želimira

doi:10.1016/j.scitotenv.2020.144159

Cited by 17 publications

(14 citation statements)

References 90 publications

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“…For example, in the presence of relatively high NOM content (i.e., 2.5 -8.9 mgDOC/L) and residual disinfectant, both Wang and Wang and collaborators 22 and Heibati and collaborators 23 highlighted how the NOM concentration and composition did not vary with the water residence time in the DWDN. On the contrary, Kurajica and collaborators 24 observed an increase of the intensity of protein-like fluorescent component in two groundwater-fed DWDSs with TOC concentrations between 1 and 2.5 mg/L, similarly to the increase of fluorescence registered by Han and collaborators 25 at DWDS taps. Such heterogeneity suggests that NOM variability is highly affected by the specific DWDS characteristics, including, but not limited to, NOM concentrations and composition, source water, type of treatments and pipe materials.…”

Section: Introductionmentioning

confidence: 74%

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Gabrielli

Pulcini

Barbesti

et al. 2023

Preprint

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Despite being reduced by treatment, natural organic matter (NOM) is ubiquitous in drinking water distribution systems (DWDSs) from sources to consumers taps where it can potentially have negative impacts on drinking water quality. While few studies have studied its behavior in disinfected and NOM-rich DWDSs, its dynamics in non-disinfected systems, characterized by low NOM content, have not been explored yet. In this study, we monitored the NOM variations occurring between sources and consumers taps of a non-disinfected DWDS using both absorbance and fluorescence, selected due to their increasing adoption by water utilities. PARAFAC analysis of fluorescence data, combined with absorbance indices, highlighted how NOM characteristics in groundwater can vary likely due to the combination of multiple factors, especially in case of shallower aquifers. The treatment processes acted differently on fluorescent components and absorbance likely due to the differences among fluorophores and between fluorescent and chromophoric molecules. Within the distribution network, variations were detected only at selected sampling locations suggesting the importance of the “last meter” factor, especially for sampling locations located within buildings. These findings remark the overall stability of water quality within non-disinfected DWDSs, but they stress the importance of localized water quality variations, suggesting several implications for DWDS monitoring and management.

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Section: Introductionmentioning

confidence: 74%

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Gabrielli

Pulcini

Barbesti

et al. 2023

Preprint

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“…Eqn (2)–(6) represent the simplified scheme of possible reactive species involved and the pathway of DBP formation during Cl 2 and ClO 2 treatment of source water containing bromide ions. 1,44 When, Br − is present in the water, it gets easily oxidised according to eqn (4) and (5).…”

Section: Resultsmentioning

confidence: 99%

Carbonaceous DBP (THMs and HAAs) formation during Cl₂ and ClO₂ treatment of aqueous soluble fractions of soil derived natural organic matter

Padhi¹

2022

Environ. Sci.: Water Res. Technol.

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“…Chlorination remains one of the most used traditional water disinfection technologies, however, it is known to produce disinfection byproducts (DBPs). , Chlorination may cause different responses to ARB and ARGs, depending on the type, dose, reaction time, and the nature of the ARB . The bacterial inactivation mechanism of chlorination mainly involves using chlorinating agent oxidation to kill the target microorganisms.…”

Section: Advances In Water Disinfection Technologies In Removing Arb ...mentioning

confidence: 99%

Traditional and Emerging Water Disinfection Technologies Challenging the Control of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes

Cai

Sun

et al. 2021

ACS EST Eng.

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The emergence of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in the environment has created obstacles when treating infectious diseases with antibiotics. Wastewater treatment plants (WWTPs) serve as reservoirs for ARB and ARGs and can disseminate them into the environment. It is important to understand and address these risks. Generally, professional disinfection processes have been used in WWTPs to disinfect the target water body, with the goal of eliminating pathogenic microorganisms in the water. However, ARGs are not generally considered, and antibiotic resistance has spread and developed through horizontal gene transfer (HGT). This Review provides a detailed overview of the application progress of different traditional and new disinfection technologies in removing ARB and ARGs, mainly focusing on the bacterial inactivation mechanisms of chlorination, ozonation, ultraviolet (UV) (including UVA, UVB, and UVC), sunlight, sunlight-dissolved organic matter (DOM), and photocatalysis (PC)/photoelectrocatalysis (PEC). In addition, this Review also focuses on the disinfection technology involved in the transfer of ARGs and clarifies the underlying transfer mechanisms in water environments. Furthermore, by linking the mechanisms of bacterial inactivation, the Review describes how SOS response and cell membrane permeability may be the key step in the conjugation, transformation, and transduction of ARGs. Finally, given the applications and current problems associated with traditional water disinfection technologies and light-based disinfection technologies in removing and controlling ARB and ARGs, this Review describes the current challenges and opportunities to facilitate the development of future disinfection technologies. The Review also highlights future research directions related to ARG transmission control.

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Effects of changing supply water quality on drinking water distribution networks: Changes in NOM optical properties, disinfection byproduct formation, and Mn deposition and release

Cited by 17 publications

References 90 publications

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Carbonaceous DBP (THMs and HAAs) formation during Cl₂ and ClO₂ treatment of aqueous soluble fractions of soil derived natural organic matter

Traditional and Emerging Water Disinfection Technologies Challenging the Control of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes

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Effects of changing supply water quality on drinking water distribution networks: Changes in NOM optical properties, disinfection byproduct formation, and Mn deposition and release

Cited by 17 publications

References 90 publications

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Source to taps investigation of natural organic matter in non-disinfected drinking water distribution systems

Carbonaceous DBP (THMs and HAAs) formation during Cl2 and ClO2 treatment of aqueous soluble fractions of soil derived natural organic matter

Traditional and Emerging Water Disinfection Technologies Challenging the Control of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes

Contact Info

Product

Resources

About

Carbonaceous DBP (THMs and HAAs) formation during Cl₂ and ClO₂ treatment of aqueous soluble fractions of soil derived natural organic matter