Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters

Wang, Chun; Yuan, Zixi; Liu, Yaoyao; Wu, Qian-Yuan; Sun, Yingxue

doi:10.1016/j.watcyc.2021.11.003

Cited by 12 publications

(2 citation statements)

References 39 publications

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“…Reclaimed water safety is the focus of wastewater treatment. – For ozonated reclaimed water stored in the receiving water, aqueous toxic compounds, such as Br-DBPs, irradiated with sunlight has been reported to undergo natural phototransformation. ,, Considering the widespread occurrence and application of phototransformation in water treatment, our findings delineate the essential phototransformation mechanisms of Br-DBPs at the molecular level, addressing an important gap in current research. FT-ICR MS revealed that the abundance and number of assigned formulas decreased during irradiation for formulas containing bromine atoms with high H/C values and heavy MWs.…”

Section: Results and Discussionmentioning

confidence: 78%

Phototransformation of Brominated Disinfection Byproducts and Toxicity Elimination in Sunlit-Ozonated Reclaimed Water

Wu,

Lu,

et al. 2023

Environ. Sci. Technol.

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Ozonation is universally used during water treatment but can form hazardous brominated disinfection byproducts (Br-DBPs). While sunlight exposure is advised to reduce the risk of Br-DBPs, their phototransformation pathways remain insufficiently understood. Here, sunlight irradiation was found to reduce adsorbable organic bromine by 63%. Applying high-resolution mass spectrometry, the study investigated transformations of dissolved organic matter in sunlit-ozonated reclaimed water, revealing the number and abundance of assigned formulas decreased after irradiation. The Br-DBPs with O/C < 0.6 and MW > 400 Da were decreased or removed after irradiation, with the majority being CHOBr compounds. The peak intensity reduction ratio of CHOBr compounds correlated positively with double bound equivalent minus oxygen ratios but negatively with O/C, suggesting that photo-susceptible CHOBr compounds were highly unsaturated. Mass difference analysis revealed that the photodegradation pathways were mainly oxidation aligned with debromination. Three typical CHOBr molecular structures were resolved, and their photoproducts were proposed. Toxicity estimates indicated decreased toxicity in these photoproducts compared to their parent compounds, in line with experimentally determined values. Our proposed phototransformation pathways for Br-DBPs enhance our comprehension of their degradation and irradiation-induced toxicity reduction in reclaimed water, further illuminating their transformation under sunlight in widespread environmental scenarios.

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Section: Results and Discussionmentioning

confidence: 78%

Phototransformation of Brominated Disinfection Byproducts and Toxicity Elimination in Sunlit-Ozonated Reclaimed Water

Wu,

Lu,

et al. 2023

Environ. Sci. Technol.

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“…Reclaimed water has been utilized in urban water resource allocation for decades; many countries have introduced reclaimed water in multisource water configuration systems, especially the United States, Japan, Israel, and Singapore. It is widely acknowledged that early in 1920, the government of Arizona (USA) developed urban wastewater recycling from the experimental research stage to the application stage [13][14][15][16]. In the 1960s, the United States built numbers of largescale wastewater treatment plants to treat and recycle domestic wastewater [17,18].…”

Section: Introductionmentioning

confidence: 99%

Study of Water Resource Allocation and Optimization Considering Reclaimed Water in a Typical Chinese City

Wang

et al. 2023

Sustainability

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Reclaimed water is considered to be an important alternative to freshwater to solve the imbalance between the supply and demand of regional water resources; it is also recognized as an effective tool for alleviating ecological problems caused by insufficient water flow. Yiwu City is a typical area experiencing a water shortage in southeastern China because the regional water resources are limited. In this study, the multiple water resource allocations in Yiwu City are optimized, the complex coupling model of multiple water resource allocation is established, and both the economic and ecological effects of multiple water resource allocation in Yiwu City are simulated and analyzed. The simulation results of optimizing the multiple water resource allocations show an efficient way of reclaimed water utilization in this typical Chinese city. In order to ensure the future economic and social development of Yiwu City, it is necessary to introduce reclaimed water into different fields, such as residential water, industrial water, agricultural water, and environmental water. Reclaimed water has also proven to have a high capability for pollutant control and reduction, which is also important to the ecology and environmental protection.

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Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom control in reclaimed water landscape

Song

Zhu

et al. 2022

Front. Environ. Sci. Eng.

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Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters

Cited by 12 publications

References 39 publications

Phototransformation of Brominated Disinfection Byproducts and Toxicity Elimination in Sunlit-Ozonated Reclaimed Water

Phototransformation of Brominated Disinfection Byproducts and Toxicity Elimination in Sunlit-Ozonated Reclaimed Water

Study of Water Resource Allocation and Optimization Considering Reclaimed Water in a Typical Chinese City

Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom control in reclaimed water landscape

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