Article
Environmental Sciences
Mengning Qiu, Elad Salomons, Avi Ostfeld
Summary: This study proposes an analytical method for modeling the slug-feed method of disinfection and demonstrates its efficacy in two case studies, showing higher robustness compared to current standards and literature. The method provides additional resource utilization flexibility for water authorities and offers extra levels of district metered areas prioritization.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Johannes B. Nel, Paul T. Mativenga, Annlize L. Marnewick
Summary: Water allocation and decision support systems are crucial for managing the scarce resource of water. This article critically reviews existing literature on water allocation schemes and proposes a framework for practitioners to select appropriate water allocation planning schemes based on the specific management situation. This framework was applied to analyze the water supply situation in South Africa and propose a generic conceptualized water allocation planning and decision support framework for that region.
Article
Environmental Sciences
Damjan Ivetic, Milos Milasinovic, Milan Stojkovic, Aleksandar Sotic, Nicolas Charbonnier, Nikola Milivojevic
Summary: Dam and reservoir systems are crucial for water resource management, but they are increasingly affected by various impacts. This paper proposes a framework for dynamic modeling of reduced functionality in a dam and reservoir system and simulating system operation under adverse conditions.
Article
Engineering, Industrial
Yipeng Wu, Zhilong Chen, Huadong Gong, Qilin Feng, Yicun Chen, Haizhou Tang
Summary: This paper aims to advance network interdiction analysis in urban water distribution networks by introducing a three-player game model, utilizing hydraulic analysis and variable neighborhood search method to evaluate the effectiveness of protective resources against intentional attacks.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Environmental Sciences
Brenda Cansino-Loeza, Aurora del Carmen Munguia-Lopez, Jose Maria Ponce-Ortega
Summary: Urbanization, increasing demands, and climate change pose critical challenges to ensure water, energy, and food security. It is necessary to integrate tools to guide resource allocation and promote sustainability. This work presents a mathematical formulation to optimize the design and management of resources to enhance the security of the water-energy-food nexus.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Engineering, Environmental
Mohammad Ali Khaksar Fasaee, Emily Berglund, Kelsey J. Pieper, Erin Ling, Brian Benham, Marc Edwards
Summary: This research aims to explore modeling approaches to predict the risk of lead in private drinking water systems, with results showing Naive Bayes classifiers performing best in terms of recall and precision. Copper is identified as the most significant predictor of lead, while feature selection has limited impact on performance and discretization methods can greatly influence model performance when paired with classifiers.
Article
Environmental Sciences
Mostafa Shoorangiz, Mohammad Reza Nikoo, Jirka Simunek, Amir H. Gandomi, Jan Franklin Adamowski, Malik Al-Wardy
Summary: This study proposes a risk-based simulation-optimization framework combined with a decision support model to determine optimal locations for contaminant flushing hydrants. The framework reduces the risk of water contamination events and provides a robust plan with a 95% confidence level. The integrated model incorporates a conflict modeling technique and a novel contamination event grouping-parallel water quality simulation technique to reduce model runtime.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Gopinathan R. Abhijith, Avi Ostfeld
Summary: Past water distribution systems management studies have focused on residual chlorine as the sole indicator of water quality reliability, neglecting other emerging water quality parameters. This paper proposes a flexible decision-making framework that integrates mechanistic modeling and multi-criteria decision-making to evaluate different operating alternatives based on water quality parameters in water distribution systems. The results indicate that controlling disinfection by-products formation and taste and odor problems are critical for ensuring optimal performance of water distribution systems.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Carolina Calero Preciado, Stewart Husband, Joby Boxall, Gonzalo del Olmo, Victor Soria-Carrasco, Sung Kyu Maeng, Isabel Douterelo
Summary: Intermittent water supplies have a significant impact on biofilm growth and can lead to water quality degradation, especially events lasting more than 6 hours which generate more turbidity responses and hence discolouration risk. Additionally, shorter times of non-water supply may increase the risk of aromatic organic compounds and potential pathogenic microorganisms, highlighting the importance of managing microbial interactions to ensure continued safe water supply.
Article
Engineering, Civil
Killian Gleeson, Stewart Husband, John Gaffney, Joby Boxall
Summary: The derivation of information from monitoring drinking water quality at high spatiotemporal resolution is limited by variable data quality. A framework is developed to overcome this by applying rule-based data quality assessment, cross-correlation, and spatiotemporal information. The framework provides quality-assured data and actionable insight.
AQUA-WATER INFRASTRUCTURE ECOSYSTEMS AND SOCIETY
(2023)
Article
Agronomy
Qiting Zuo, Qingsong Wu, Lei Yu, Yongping Li, Yurui Fan
Summary: The study developed a STFIP approach for agricultural water, energy and food planning, and applied a STFIP-WEFN model to maximize net agricultural profit in Henan Province, China. By optimizing resource allocation, the planting area of crops can be increased and uncertainties within the WEFN system can be addressed.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Environmental Sciences
Yiran Ji, Feifei Zheng, Jiawen Du, Yuan Huang, Weiwei Bi, Huan-Feng Duan, Dragan Savic, Zoran Kapelan
Summary: This study proposes a novel manual grab-sampling method (MGSM) for locating contamination sources in water distribution systems. By using a dynamic and cyclical sampling strategy, this method can effectively and accurately reduce the spatial range of the contamination sources, and it is applicable to scenarios with multiple contamination sources and pipe flow direction changes. The results demonstrate a balanced trade-off between detection efficiency and sampling/testing budgets.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Zilin Li, Chi Zhang, Haixing Liu, Chao Zhang, Mengke Zhao, Qiang Gong, Guangtao Fu
Summary: This study presents a new stacking ensemble model that uses multiple water quality parameters for contamination event detection. The proposed method outperforms an artificial neural network (ANN) benchmark method in terms of detection accuracy. The results demonstrate the great potential of the stacking method for detecting contamination events in water distribution systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
C. Giudicianni, A. Campisano, A. Di Nardo, E. Creaco
Summary: This paper addresses the consistency issue of water distribution network (WDN) modeling for optimal water quality sensor placement. By considering the contamination extension or contaminated population in relation to the number of sensors installed, a biobjective optimization is conducted. The study finds that the contamination extension increases when pulsed demand is considered, and the optimal sensor positions are affected by pulsed demand, especially in highly looped WDN layouts.
WATER RESOURCES RESEARCH
(2022)
Article
Computer Science, Interdisciplinary Applications
Young Hwan Choi
Summary: This study develops an optimal approach for the design and operation of water distribution systems, considering hydraulic and water quality criteria. By applying three objective functions, the study aims to minimize the total cost of design and operation, maximize system robustness, and minimize chlorine requirements. The proposed approach is verified using a benchmark network and can provide a new perspective on WDS design and operation techniques.
JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Mengning Qiu, Bradley Alexander, Angus R. Simpson, Sylvan Elhay
ENVIRONMENTAL MODELLING & SOFTWARE
(2019)
Article
Engineering, Civil
Mengning Qiu, Sylvan Elhay, Angus R. Simpson, Bradley Alexander
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2019)
Article
Engineering, Civil
Mengning Qiu, Angus R. Simpson, Sylvan Elhay, Bradley Alexander
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2019)
Article
Environmental Sciences
Mengning Qiu, Mashor Housh, Avi Ostfeld
Article
Engineering, Civil
Mengning Qiu, Mashor Housh, Avi Ostfeld
Summary: This study presents an analytical algorithm for simultaneous least-cost design and operation of looped water distribution systems. The method outperforms evolutionary methods and can be used to solve the design-operation problem or enhance evolutionary algorithms.
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2021)
Article
Environmental Sciences
Mengning Qiu, Elad Salomons, Avi Ostfeld
Summary: This study proposes an analytical method for modeling the slug-feed method of disinfection and demonstrates its efficacy in two case studies, showing higher robustness compared to current standards and literature. The method provides additional resource utilization flexibility for water authorities and offers extra levels of district metered areas prioritization.
WATER RESOURCES RESEARCH
(2021)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.