Spatiotemporal evolvement and factors influencing natural and synthetic EDCs and the microbial community at different groundwater depths in the Chaobai watershed: A long-term field study on a river receiving reclaimed water

Wang, Peijing; Rene, Eldon R.; Yan, Yulin; Ma, Wing-Kin; Xiang, Yayun

doi:10.1016/j.jenvman.2019.05.156

Cited by 22 publications

(6 citation statements)

References 50 publications

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“…In those processes, microorganisms could generate complex unsaturated compounds by degrading labile peptides and easily release nitrogen as NH 4 −N, 40 and NH 4 −N was finally transformed into NO 3 −N through nitrification with the production of H + . 7 Furthermore, plentiful TN in SNWRA groundwater can stimulate the activity of nitrogen cyclingrelated microorganisms, which were observed by Wang et al 48 showing that there were many functional microorganisms related to N during AGR in the Chaobai River. The significantly less nitrogenous compounds (CHON and CHONS) in SNWRA groundwater relative to RWRA groundwater (p < 0.05) further supported that the AGR in SNWRA can promote the deamination of groundwater DOM.…”

Section: Responses Of Groundwater Chemical Evolution To Agr As Shown ...mentioning

confidence: 89%

Molecular Responses of Dissolved Organic Matter to Anthropogenic Groundwater Recharge: Characteristics, Transformations, and Sensitive Molecules

Zeng

Zheng

Chen

et al. 2023

Environ. Sci. Technol.

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The groundwater quality impacts associated with anthropogenic groundwater recharge (AGR) are of great concern for water management. However, the impacts of AGR on the molecular properties of dissolved organic matter (DOM) in aquifers are poorly understood. Herein, Fourier transform ion cyclotron resonance mass spectrometry was used to unravel the molecular characteristics of DOM in groundwaters from recharge areas by reclaimed water (RWRA) and natural water from Southto-North Water Diversion Project (SNWRA). Compared with RWRA groundwater, significantly fewer nitrogenous compounds, more sulfur-containing compounds, higher concentrations of NO 3 −N, and lower pH were observed in SNWRA groundwater, indicating the occurrence of deamination, sulfurization, and nitrification. The occurrence of these processes was further supported by transformations of more molecules related to nitrogen and sulfur in SNWRA groundwater relative to RWRA groundwater. The intensities of most common molecules in all samples were significantly correlated with the water quality indicators (e.g., Cl − and NO 3 −N) and fluorescent indicators (e.g., humic-like components (C1%)), indicating that those common molecules may have the potential to track the environmental impact of AGR on groundwater, especially these specific molecules having great mobility and being significantly correlated with other inert tracers like C1% and Cl − . This study is helpful to understand the environmental risks and regional applicability of AGR.

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Section: Responses Of Groundwater Chemical Evolution To Agr As Shown ...mentioning

confidence: 89%

Molecular Responses of Dissolved Organic Matter to Anthropogenic Groundwater Recharge: Characteristics, Transformations, and Sensitive Molecules

Zeng

Zheng

Chen

et al. 2023

Environ. Sci. Technol.

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“…There was a positive correlation between E1 and all selected environmental variables except DO. The EDCs were eliminated with relatively high rates under aerobic conditions in a river water system and biotransformation would decrease under reduced oxygen conditions [42]. It usually is thought that DO is negatively correlated with concentrations of some EDCs and affects the environment's fate and distribution of EDCs in terms of redox, biodegradation and biotransformation [54].…”

Section: Correlations Between Edcs and Water Quality Parametersmentioning

confidence: 99%

Pollution Characteristics and Risk Prediction of Endocrine Disruptors in Lakes of Wuhan

Zhang

Cao

Tan

et al. 2022

Toxics

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As a new and ubiquitous trace organic pollutant, endocrine-disrupting compounds (EDCs) can cause endocrine-disrupting effects on organisms even at low levels. However, little information is available on the resource and assessment of EDC risks in the water environment. The study area was selected based on the paucity of information on the pollution status of inland lakes. Wuhan has numerous and diverse types of lakes which receive micropollutants from different pathways. In this study, the spatial distribution, occurrence, quantity and ecological risks of EDCs in 12 lakes were investigated. Five EDCs, including 17-alpha-ethinylestradiol (17α-EE2), estrone (E1), β-estradiol (β-E2), estriol (E3) and bisphenol A (BPA) were detected in surface waters. The distribution of EDC content in the lakes was ordered as follows: exurban zone < suburban area < urban areas. The pollution sources in remote lakes mainly included agricultural and aquaculture wastewater, while those in suburban and urban areas included domestic or industrial wastewater. Areas with higher EDC content were frequently related to agricultural activities, aquaculture water or dense populations. Water quality parameters, including dissolved oxygen, pH and water temperature, were significantly related to the occurrence and distribution of EDCs in the lakes. Risk assessment demonstrated that the occurrence of EDCs posed minimum to medium risk to aquatic organisms in the lakes. The results showed that the lakes faced a threat hormone pollution though it was at lower doses and, thus, the ecological risk of EDCs should be considered in future environmental policies and decisions in China.

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“…Subsequently, the RW was transferred to the Jian River by underground pipeline (Figure 1). The treating processes of the RTWP consist of ozone pre-oxidation, membrane bioreactor, chemical phosphorus removal, ultraviolet disinfection, constructed wetlands, and oxidation ponds [44]. The concentrations of total nitrogen (TN), total phosphorous (TP), NH 4 + -N, and chemical oxygen demand (CODcr) in the RW are 15, 0.2, 1, and 20 mg/L, respectively.…”

Section: The Chaobai River Restoration Project With Rwmentioning

confidence: 99%

Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China

Zhu

Han

Song

et al. 2021

Water

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Some of the rivers in northern China are dried, and reclaimed water (RW) is used to restore these degraded river ecosystems, during which the RW could recharge the aquifer by river bank infiltration. From 2007 to 2018, 2.78 × 108 m3 of RW has been replenished to the dried Chaobai River (Shunyi reach), Beijing, China, which is located on the edge of one depression cone in groundwater caused by groundwater over-pumping. The groundwater hydrodynamic variations and the flow path of the RW were identified by eight-year hydrological, hydrochemical, and stable isotopic data, together with multivariate statistical analysis. The RW infiltration drastically impacts the groundwater dynamics with a spatiotemporal variation. The 30-m depth groundwater levels at Perennial intake reach increased quickly around 3 m after 2007, which indicated that they were dominated by RW infiltration. Other 30-m depth groundwater levels were controlled by precipitation recharge from 2007 to 2011, showing significant seasonal variations. In 2012, with more RW transferred to the river, the hydrodynamic impact of the RW on 30-m depth aquifer expanded downstream. However, the 50-m and 80-m depth groundwater levels showed decreasing trend with seasonal variations, due to groundwater pumping. The 30-m depth aquifer was mainly recharged by RW, being evidenced by the enriched δ2H and δ18O. The depleted δ2H and δ18O of the 50-m and 80-m depth groundwater indicated that they were dominated by regional groundwater with meteoric origin. The heterogenous properties of the multi-layer alluvial aquifer offer the preferential flow path for RW transport in the aquifers. The proportion of the RW in the aquifers decreases with depth that was calculated by the chloride conservative mixing model. The increased lateral hydraulic gradient (0.43%) contributes to the RW transport in the 30-m depth aquifer. RW usage changed 30-m depth groundwater type from Ca·Mg-HCO3 to Na·Ca·Mg-HCO3·Cl. RW preferentially recharged the 50-m and 80-m depth aquifers by vertical leakage.

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Spatiotemporal evolvement and factors influencing natural and synthetic EDCs and the microbial community at different groundwater depths in the Chaobai watershed: A long-term field study on a river receiving reclaimed water

Cited by 22 publications

References 50 publications

Molecular Responses of Dissolved Organic Matter to Anthropogenic Groundwater Recharge: Characteristics, Transformations, and Sensitive Molecules

Molecular Responses of Dissolved Organic Matter to Anthropogenic Groundwater Recharge: Characteristics, Transformations, and Sensitive Molecules

Pollution Characteristics and Risk Prediction of Endocrine Disruptors in Lakes of Wuhan

Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China

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