Water Science & Technology最新文献_第3页

A validation workflow for treatment wetland performance data 处理湿地性能数据的验证工作流程

Water Science & Technology Pub Date : 2024-06-05 DOI: 10.2166/wst.2024.182

Sophie Hai Yen Guillaume-Ruty, J. Pueyo-Ros, Joaquim Comas, N. Forquet

{"title":"A validation workflow for treatment wetland performance data","authors":"Sophie Hai Yen Guillaume-Ruty, J. Pueyo-Ros, Joaquim Comas, N. Forquet","doi":"10.2166/wst.2024.182","DOIUrl":"https://doi.org/10.2166/wst.2024.182","url":null,"abstract":"\u0000 \u0000 Treatment wetlands (TWs) effectively remove target pollutants and enhance urban water circularity and resilience. They constitute a prominent solution for urban wastewater treatment, thanks to their adaptability across various types of wastewater, scales and climatic conditions. However, the disparity in TW designs and the focus on a restricted set of variables applicable to research studies impede any comprehensive evaluation and comparison of TW performance. Our study introduces a methodology for data validation, in concurrently establishing a workflow specific to TW. This approach is aimed at defining the scope and relationships within the data, implementing checks and concatenating them into a quality flag, as an initial step towards building reliable statistical models. We underscore the importance of both mobilising comprehensive knowledge and identifying customary, yet implicit, choices intertwined in data processing. As for the application workflow, we collected and analysed data sourced from peer-reviewed papers on horizontal and vertical flow TW. Deficiencies were noted in key data elements like dimensions, concentrations and operational conditions. For the data analysis, relationships are highlighted between variables introduced for modelling purposes. These methodologies and workflows assess the quality of the data, in paving the way towards more dependable statistical models for TW design and implementation.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141381779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urban drainage channels as a pathway for microplastics in riverine systems: A case study of Delhi, India 城市排水渠是微塑料进入河流系统的途径：印度德里案例研究

Water Science & Technology Pub Date : 2024-06-05 DOI: 10.2166/wst.2024.181

Mansi Vaid, K. Sarma, Anshu Gupta

{"title":"Urban drainage channels as a pathway for microplastics in riverine systems: A case study of Delhi, India","authors":"Mansi Vaid, K. Sarma, Anshu Gupta","doi":"10.2166/wst.2024.181","DOIUrl":"https://doi.org/10.2166/wst.2024.181","url":null,"abstract":"\u0000 \u0000 Urban drainage channels act as significant routers of microplastics (MPs) originating from terrestrial to aquatic systems. In the present study, contamination of MPs (250–5,000 μm size) has been investigated in an interlinked urban aquatic system comprising Najafgarh drain, corresponding secondary drains, and Yamuna River in Delhi, India. A range of 100–4,300 MPs/m3 (pre-monsoon) and 100–6,700 MPs/m3 (post-monsoon) were detected in secondary drains, which meet the Najafgarh drain through its course in the city. Najafgarh drain showed an average abundance of 771 and 342 MPs/m3 during pre- and post-monsoon season, respectively. The discharge of microplastic (MP)-laden wastewater from the Najafgarh drain into the Yamuna River created a rise in MP abundance in the river at the drain's downstream location. Thus, revealing that secondary drains play a significant role in MP channelization to the Najafgarh drain and subsequently Yamuna River. White fragments were the dominant MP types in the study area. Chemical characterization revealed 11 types of MP polymers, with a predominance of polyethylene. Considering the knowledge gap in the MP database of interconnected urban aquatic systems in India, this study might help in providing baseline information and encourage more studies addressing the magnitude of this problem for predicting long-term environmental risks.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"12 2‐3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141383539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiolytic degradation of 4-hydroxybenzoate in aerated and deoxygenated aqueous solutions 4-hydroxybenzoate 在通气和脱氧水溶液中的放射性降解

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.167

Guadalupe Albarrán, E. Mendoza

{"title":"Radiolytic degradation of 4-hydroxybenzoate in aerated and deoxygenated aqueous solutions","authors":"Guadalupe Albarrán, E. Mendoza","doi":"10.2166/wst.2024.167","DOIUrl":"https://doi.org/10.2166/wst.2024.167","url":null,"abstract":"\u0000 \u0000 The radiolytic degradation of 4-hydroxybenzoate (4-HBA–) in aerated, oxygen-free and N2O-saturated aqueous solutions at concentrations of 0.10 and 0.25 mmol/dm3 were gamma irradiated at different doses in a source of Co-60. The results show that ·OH adds predominantly to the third position of the aromatic ring, and elimination of the acid group leads to the degradation of 4-HBA–. With an N2O-saturated 0.10 mmol/dm3 4-HBA– solution, total degradation occurred at 1.6 kGy, and with a 0.25 mmol/dm3 solution, total degradation occurred at 3.5 kGy. In the aerated and oxygen-free 0.25 mmol/dm3 4-HBA– solutions, the behavior was similar, degradation occurring at a dose of 13.1 kGy. At the concentration of 0.10 mmol/dm3, total degradation occurred at 7.0 kGy, with small amounts of radiolytic products and byproducts. We propose a mechanism for the degradation of 4-HBA– caused by water radicals produced in the three environments, leading to formation of the identified stable products. Oxidation was followed by chemical oxygen demand (COD), which decreased as the 4-HBA− concentration increased. The kinetics showed a pseudo-first-order behavior. The rate constant of degradation was similar for the solutions with and without oxygen.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"69 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Current research hotspots and frontier trends on carbon budget of coastal wetlands: A bibliometric analysis 沿海湿地碳收支的当前研究热点和前沿趋势：文献计量分析

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.171

Xinyi Zhang, Wenhao Liu, Jiaxing Lu, Muhammad Tanveer, Zhen Qi, Chengkai Fu, Huijun Xie, L. Zhuang, Zhen Hu

{"title":"Current research hotspots and frontier trends on carbon budget of coastal wetlands: A bibliometric analysis","authors":"Xinyi Zhang, Wenhao Liu, Jiaxing Lu, Muhammad Tanveer, Zhen Qi, Chengkai Fu, Huijun Xie, L. Zhuang, Zhen Hu","doi":"10.2166/wst.2024.171","DOIUrl":"https://doi.org/10.2166/wst.2024.171","url":null,"abstract":"\u0000 \u0000 Coastal wetlands are the main distribution of blue carbon in coastal zones and well known for their high carbon sequestration capacity. Investigating the variation of carbon budget is crucial for understanding the functionality of coastal wetlands and effectively addressing climate change. In this study, a bibliometric analysis of 4,509 articles was conducted to reveal research progress, hot issues, and emerging trends in the coastal wetland carbon budget field. The number of publications and citations in this field increased exponentially from 1991 to 2022. The leading subject category was Environmental Sciences with 1,844 articles (40.9%). At present, studies have been focused on blue carbon, the effects of climate change and man-made disturbances on carbon cycle, and the restoration of coastal wetlands. Based on the hotspots and trends in this field, the future researches should include (1) exploring the functional mechanisms of various factors affecting carbon cycle and establishing a methodological system for the estimation of blue carbon in coastal wetlands; (2) researching restoration techniques of coastal wetland and constructing wetland restoration evaluation index system; and (3) formulating enforceable carbon trading policy and strengthening international cooperation.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"2 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141100425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mesoscopic ring element growth and deformation induced biofilm streamer evolution in microfluidic channels 微流体通道中介观环状元素生长和变形诱导的生物膜流演变

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.168

Zheng Zhang, Yangyang Tang, Cong Tao, Jinchang Zhang, Fulin Dong, Song Liu, Duohuai Zhang, Xiaoling Wang

引用次数: 0

Green infrastructure layout based on a dynamic operation feature of drainage systems 基于排水系统动态运行特征的绿色基础设施布局

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.169

Chen Shen, Xin Dong, Luyao Wang, Xinhao Wang

{"title":"Green infrastructure layout based on a dynamic operation feature of drainage systems","authors":"Chen Shen, Xin Dong, Luyao Wang, Xinhao Wang","doi":"10.2166/wst.2024.169","DOIUrl":"https://doi.org/10.2166/wst.2024.169","url":null,"abstract":"\u0000 \u0000 Increasingly frequent urban floods strain the traditional grey infrastructure, overwhelming the capacity of drainage networks and causing challenges in managing stormwater. The heavy precipitation leads to flooding and damage to drainage systems. Consequently, efficient mitigation strategies for flooding have been researched deeply. Green infrastructure (GI) has proved to be effective in responding the increasing risk of flood and alleviate pressure on drainage systems. However, as the primary infrastructure of stormwater management, there is still a lack of attention to the dynamic operation feature of urban sewer systems during precipitation events. To fill this gap, we proposed a novel approach that integrates hydraulic characteristics and the topological structure of a sewer network system. This approach aims to identify influential nodes, which contribute to the connectivity of the sewer network amidst dynamic changes in inflow during precipitation events. Furthermore, we adopted rain barrels to serve as exemplars of GI, and 14 GI layout schemes are produced based on the different ranks of influential nodes. Implementing GI measures on both poorly performing and well-performing nodes can yield distinct benefits in mitigating node flooding. This approach provides a new perspective for stormwater management, establishing effective synergy between GI and the drainage system.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"8 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urban flood modeling with a novel coupling method of surface and sewer hydrodynamic processes 利用地表和下水道水动力过程的新型耦合方法建立城市洪水模型

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.172

Siyi Wang, Jiaying Wang, K. Xin, Hexiang Yan, Shuping Li, Tao Tao

{"title":"Urban flood modeling with a novel coupling method of surface and sewer hydrodynamic processes","authors":"Siyi Wang, Jiaying Wang, K. Xin, Hexiang Yan, Shuping Li, Tao Tao","doi":"10.2166/wst.2024.172","DOIUrl":"https://doi.org/10.2166/wst.2024.172","url":null,"abstract":"\u0000 Drainage modeling that accurately captures urban storm inundation serves as the foundation for flood warning and drainage scheduling. In this paper, we proposed a novel coupling ideology that, by integrating 2D-1D and 1D-2D unidirectional processes, overcomes the drawback of the conventional unidirectional coupling approach that fails to properly represent the rainfall surface catchment dynamics, and provides more coherent hydrological implications compared to the bidirectional coupling concept. This paper first referred to a laboratory experimental case from the literature, applied and analyzed the coupling scheme proposed in this paper and the bidirectional coupling scheme that has been widely studied in recent years, compared the two coupling solutions in terms of the resulting accuracy and applicability, and discussed their respective strengths and weaknesses to validate the reliability of the proposed method. The verified proposed coupling scheme was then applied to the modeling of a real drainage system in a region of Nanjing, China, and the results proved that the coupling mechanism proposed in this study is of practical application value.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"6 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141100248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functional and financial analysis of an inclined step solar desalination using phase change nanomaterials 使用相变纳米材料的斜阶式太阳能海水淡化的功能和财务分析

Water Science & Technology Pub Date : 2024-05-24 DOI: 10.2166/wst.2024.170

Ahmed Mahal, Maysoon Al-Haideri, Anas Alkhouri, A. Obaidullah, Meitao Duan

{"title":"Functional and financial analysis of an inclined step solar desalination using phase change nanomaterials","authors":"Ahmed Mahal, Maysoon Al-Haideri, Anas Alkhouri, A. Obaidullah, Meitao Duan","doi":"10.2166/wst.2024.170","DOIUrl":"https://doi.org/10.2166/wst.2024.170","url":null,"abstract":"\u0000 Recent decades have seen a shortage of water, which has led scientists to concentrate on solar desalination technologies. The present study examines the solar water desalination system with inclined steps, while considering various phase change materials (PCMs). The findings suggest that the incorporation of PCM generally enhances the productivity of the solar desalination system. Additionally, the combination of nanoparticles has been used to PCM, which is a popular technique utilized nowadays to improve the efficiency of these systems. The current investigation involves the transient modeling of a solar water desalination system, utilizing energy conservation equations. The equations were solved using the Runge–Kutta technique of the ODE23s order. The temperatures of the salt water, the absorbent plate of the glass cover, and the PCM were calculated at each time. Without a phase changer, the rate at which fresh water is produced is around 5.15 kg/m2·h. The corresponding mass flow rates of paraffin, n-PCM I, n-PCM III, n-PCM II, and stearic acid are 22.9, 28.9, 5.9, 11.9, and 73 kg/m2·h. PCMs, with the exception of stearic acid, exhibit similar energy efficiency up to an ambient temperature of around 29°. However, at temperatures over 29°, n-PCM II outperforms other PCM.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"63 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progresses in synthesis and modification of g-C3N4 for improving visible-light-driven photocatalytic degradation of antibiotics 合成和改性 g-C3N4 以改善可见光驱动的抗生素光催化降解的最新进展

Water Science & Technology Pub Date : 2024-05-23 DOI: 10.2166/wst.2024.166

Kingsley Igenepo John, Goen Ho, Dan Li

{"title":"Recent progresses in synthesis and modification of g-C3N4 for improving visible-light-driven photocatalytic degradation of antibiotics","authors":"Kingsley Igenepo John, Goen Ho, Dan Li","doi":"10.2166/wst.2024.166","DOIUrl":"https://doi.org/10.2166/wst.2024.166","url":null,"abstract":"\u0000 \u0000 Graphitic carbon nitride (g-C3N4) is a widely studied visible-light-active photocatalyst for low cost, non-toxicity, and facile synthesis. Nonetheless, its photocatalytic efficiency is below par, due to fast recombination of charge carriers, low surface area, and insufficient visible light absorption. Thus, the research on the modification of g-C3N4 targeting at enhanced photocatalytic performance has attracted extensive interest. A considerable amount of review articles have been published on the modification of g-C3N4 for applications. However, limited effort has been specially contributed to providing an overview and comparison on available modification strategies for improved photocatalytic activity of g-C3N4-based catalysts in antibiotics removal. There has been no attempt on the comparison of photocatalytic performances in antibiotics removal between modified g-C3N4 and other known catalysts. To address these, our study reviewed strategies that have been reported to modify g-C3N4, including metal/non-metal doping, defect tuning, structural engineering, heterostructure formation, etc. as well as compared their performances for antibiotics removal. The heterostructure formation was the most widely studied and promising route to modify g-C3N4 with superior activity. As compared to other known photocatalysts, the heterojunction g-C3N4 showed competitive performances in degradation of selected antibiotics. Related mechanisms were discussed, and finally, we revealed current challenges in practical application.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"18 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141104473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of urban underground spaces inundation during extreme rainfall events 极端降雨事件期间城市地下空间淹没评估

Water Science & Technology Pub Date : 2024-05-23 DOI: 10.2166/wst.2024.165

Jiazhi Zhong, Dian Li, Ke Jiang

{"title":"Assessment of urban underground spaces inundation during extreme rainfall events","authors":"Jiazhi Zhong, Dian Li, Ke Jiang","doi":"10.2166/wst.2024.165","DOIUrl":"https://doi.org/10.2166/wst.2024.165","url":null,"abstract":"\u0000 As urbanization progresses and the impacts of climate change become more pronounced, urban flooding has emerged as a critical challenge for resilient cities, particularly concerning urban underground spaces where flooding can lead to significant loss of life and property. Drawing upon a comprehensive review of global research on underground space flood simulation and evacuation, this paper undertakes the modelling of inundation in a substantial underground area during the extraordinary rainfall event on 7 September 2023, in Shenzhen, China. Specifically, it introduces a two-step method to simulate the coupled surface-underground inundation process with high accuracy. The study simulates the inflow processes into three types of underground spaces: parking lots, metro stations, and underpasses. Utilizing the specific force per unit width evaluation, the research examines how varying flood barrier heights influence evacuation time and inundation risk. Subsequently, the paper proposes corresponding evacuation strategies based on the obtained findings. By highlighting the vulnerability of urban underground spaces to flooding, the study underscores the urgent need for further research in this domain.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"25 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141104424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Science &amp; Technology最新文献

Water Science & Technology最新文献