AQUA-Water Infrastructure Ecosystems and Society最新文献_第3页

Numerical investigation of hydraulic jumps with USBR and wedge-shaped baffle block basins for lower tailwater 下部尾水楔形挡板池与USBR水跃的数值研究

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-17 DOI: 10.2166/aqua.2023.261

Muhammad Waqas Zaffar, Ishtiaq Hassan, Zulfiqar Ali, Kaleem Sarwar, Muhammad Hassan, Muhammad Taimoor Mustafa, Faizan Ahmed Waris

{"title":"Numerical investigation of hydraulic jumps with USBR and wedge-shaped baffle block basins for lower tailwater","authors":"Muhammad Waqas Zaffar, Ishtiaq Hassan, Zulfiqar Ali, Kaleem Sarwar, Muhammad Hassan, Muhammad Taimoor Mustafa, Faizan Ahmed Waris","doi":"10.2166/aqua.2023.261","DOIUrl":"https://doi.org/10.2166/aqua.2023.261","url":null,"abstract":"Abstract The stilling basin of the Taunsa barrage is a modified form of the United States Bureau of Reclamation (USBR) Type-III basin, which consists of baffle and friction blocks. Studies revealed uprooting of baffle blocks due to their vertical face. Additionally, the literature highlighted issues of rectangular face baffle blocks: less drag, smaller wake area, and flow reattachment. In contrast, the use of wedge-shaped baffle blocks (WSBBs) is limited downstream of open-channel flows. Therefore, this study developed numerical models to investigate the effects of USBR and WSBB basins on the hydraulic jump (HJ) downstream of the Taunsa barrage under lower tailwater conditions. Surface profiles in WSBB and modified USBR basins showed agreement with previous studies, for which the coefficient of determination (R2) reached 0.980 and 0.970, respectively. The HJ efficiencies reached 57.9 and 58.6% in WSBB and modified USBR basins, respectively. The results of sequent depths, roller length, and velocity profiles in the WSBB basin were found more promising than the modified USBR basin, which further confirmed the suitability of the WSBB basin for barrages. Furthermore, WSBB improved flow behaviors in the basin, which showed no fluid reattachment on the sides of WSBB, increased wake regions, and decreased turbulent kinetic energies.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136032930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water committees in the implementation of decentralization measures in the water sector in Gaza Province, Mozambique: ownership and resistance 水委员会在莫桑比克加沙省水部门执行权力下放措施:所有权和抵抗

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-17 DOI: 10.2166/aqua.2023.059

Alves Francisco Nhaurire, Tanya Wells-Brown, Rehana Capurchande

{"title":"Water committees in the implementation of decentralization measures in the water sector in Gaza Province, Mozambique: ownership and resistance","authors":"Alves Francisco Nhaurire, Tanya Wells-Brown, Rehana Capurchande","doi":"10.2166/aqua.2023.059","DOIUrl":"https://doi.org/10.2166/aqua.2023.059","url":null,"abstract":"Abstract As part of the process of decentralization of water supply services in Mozambique, Water User Committees play a key role in the management of water systems. However, they struggle with sustainability issues, which affect the access to water in the communities. With this paper, we intend to understand the sustainability of water systems in Mozambique based on the socio-cultural dynamics, normative and institutional framework, and the interaction of social actors involved in the community management of water systems. This is a qualitative study based on phenomenology principles whose experiences were based on fieldwork carried out in Gaza Province, Mozambique. The study revealed that community management of water supply systems in Mozambique was a policy option for decentralization of water supply management, in response to the weak capacity (resources and technicians) for this purpose. The study shows that in practice, there has yet to be much success in achieving the objectives of the Water User Committee, as they have proven to be less effective in meeting water access needs. There are challenges affecting the sustainability of the Water User Committee, such as weak understanding of their roles, conflicts, transparency, accountability and, in turn, the sustainability of water sources.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135993869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

WEAP model to assess the water balance and future scenarios in the Chennai Basin, India 评估印度金奈盆地水平衡和未来情景的WEAP模式

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-11 DOI: 10.2166/aqua.2023.144

Puthan Veettil RaziSadath, Mariappan RinishaKartheeshwari, Lakshmanan Elango

引用次数: 0

Potential impacts of climate change on ecologically relevant flows: a case study in the Himalayan River basin 气候变化对生态相关流量的潜在影响:以喜马拉雅河流域为例

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-11 DOI: 10.2166/aqua.2023.284

Pragya Pradhan, Sangam Shrestha, Mohana Sundaram Shanmugam

引用次数: 0

Evaluation of water resources sustainable development in karst area based on the improved emergy ecological footprint model: a case study of Yunnan Province 基于改进能量生态足迹模型的喀斯特地区水资源可持续发展评价——以云南省为例

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-10 DOI: 10.2166/aqua.2023.388

Wenjie Zhang, Bo Li, Ye Luo, Zhongmei Wang, Junli Nie, Mengyu Chen, Jie Long, Lei Yang

{"title":"Evaluation of water resources sustainable development in karst area based on the improved emergy ecological footprint model: a case study of Yunnan Province","authors":"Wenjie Zhang, Bo Li, Ye Luo, Zhongmei Wang, Junli Nie, Mengyu Chen, Jie Long, Lei Yang","doi":"10.2166/aqua.2023.388","DOIUrl":"https://doi.org/10.2166/aqua.2023.388","url":null,"abstract":"Abstract This study combined emergy theory with water ecological footprint to analyze and evaluate the sustainable development status of water resources in Yunnan Province from 2012 to 2021. The water pollutant account and the water product account were supplemented to the water ecological footprint. The results showed that the water resources in Yunnan Province were generally in an ecological deficit during the study period, but their absolute values were very small. The ecological pressure index of water resources was high, while the sustainable utilization index of water resources was low, indicating that the water resources were in a state of unsustainable utilization. However, the emergy ecological footprint of water resources and the emergy ecological footprint of water resources of 10,000 Yuan GDP showed a decreasing trend, and the eco-economic coordination index of water resources was relatively high, indicating that the water resources will show a sustainable development trend in the future. The sustainable development of water resources was influenced by both natural ecological factors and social factors. Therefore, suggestions such as improving the utilization rate of water resources development, developing a green low-carbon economy, preventing and controlling water pollution, and protecting the water environment are conducive to promoting the sustainable development of water resources.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136294153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Topology-distance-based clustering method for water distribution network partitioning 基于拓扑距离的配水网络划分聚类方法

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-10 DOI: 10.2166/aqua.2023.301

Kun Du, Jiangyun Li, Wei Xu, Zilian Liu, Feifei Zheng

{"title":"Topology-distance-based clustering method for water distribution network partitioning","authors":"Kun Du, Jiangyun Li, Wei Xu, Zilian Liu, Feifei Zheng","doi":"10.2166/aqua.2023.301","DOIUrl":"https://doi.org/10.2166/aqua.2023.301","url":null,"abstract":"Abstract Partitioning water distribution networks (WDNs) into district metered areas offers benefits including reduced nonrevenue water and simplified pressure management. However, current research in this field tends to narrowly focus on the topological relationships among nodes, often overlooking the influence of pressure reducing valves (PRVs) and pump stations on clustering results. To address this limitation, this study introduces a topology-distance-based clustering (TDBC) method that enhances the accuracy of partitioning by explicitly considering the impact of PRVs and pump stations. In the TDBC method, the Floyd algorithm is initially employed to construct a topological distance matrix that quantifies the degree of node connectivity. By amplifying topological distances for links including PRVs and pump stations, their effect on clustering results is incorporated. Subsequently, nodes are clustered using the K-means algorithm based on the resulting topology-distance matrix. The proposed TDBC approach is applied to four network cases, and its outcomes are compared with those of two traditional methods. The comparative analysis indicates that the TDBC algorithm achieves precise partitioning results for networks incorporating PRVs or pump stations, while ensuring a harmonious balance between modularity and the uniformity of the partitioning results, even in networks with complex structures and highly interconnected loops.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136294895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water pollution remediation in Kazakhstan: evaluating bacterial consortiums for organic pollutant decomposition 哈萨克斯坦水污染修复:评价细菌群落对有机污染物分解的影响

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-06 DOI: 10.2166/aqua.2023.203

Zinigul Sarmurzina, Gulmira Bissenova, Aslan Temirkhanov, Zhanar Tekebayeva, Kunsulu Zakarya

{"title":"Water pollution remediation in Kazakhstan: evaluating bacterial consortiums for organic pollutant decomposition","authors":"Zinigul Sarmurzina, Gulmira Bissenova, Aslan Temirkhanov, Zhanar Tekebayeva, Kunsulu Zakarya","doi":"10.2166/aqua.2023.203","DOIUrl":"https://doi.org/10.2166/aqua.2023.203","url":null,"abstract":"Abstract Wastewater treatment is one of the key problems that has to be solved by environmental biotechnology. Wastewater bioremediation is one of the most efficient and safest methods to replenish water resources. The aim of this study is to investigate the potential of using bacterial consortiums for reducing the organic load in wastewater, specifically focusing on water samples collected from three water bodies in central and northern Kazakhstan, which are known for their high levels of organic pollution. This study utilized bacterial strains from a microorganism collection to create consortiums. These consortiums were used to treat wastewater from polluted water bodies in Kazakhstan, focusing on parameters like COD, BOD5, ammonia, and phosphate. The methodology involved culturing strains, collecting water samples, and analyzing various parameters. Statistical analysis was performed to assess the results. The study found that two bacterial consortiums, 7BLB and 7BLPA, were the most effective in reducing COD, ammonia, and ammonia nitrogen in wastewater. The consortium 6BLP was highly effective at reducing phosphate levels, surpassing acceptable standards. Hydrogen levels met regulatory requirements in all cases. The study recommends further investigation of these consortiums’ impact on other water quality indicators and suggests conducting field experiments in natural water ponds.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135347080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of granular activated carbon adsorption on mitigating microfiltration membrane fouling by algal organic matter 颗粒活性炭吸附对微滤膜污染的抑制作用

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-06 DOI: 10.2166/aqua.2023.127

Ziming Zhao, Qingsheng He, Jingfu Fan, Wenjun Sun, Madhumita B. Ray

{"title":"Effect of granular activated carbon adsorption on mitigating microfiltration membrane fouling by algal organic matter","authors":"Ziming Zhao, Qingsheng He, Jingfu Fan, Wenjun Sun, Madhumita B. Ray","doi":"10.2166/aqua.2023.127","DOIUrl":"https://doi.org/10.2166/aqua.2023.127","url":null,"abstract":"Abstract Algal blooms can seriously affect the operation of water treatment processes including low-pressure (micro- and ultrafiltration) and high-pressure (nanofiltration and reverse osmosis) membranes mainly due to the accumulation of algae-derived organic matter (AOM). This study investigated the effect of granular activated carbon (GAC) pretreatment on PVDF microfiltration performance for the removal of AOM. Dissolved organic matter (DOM) solution of commercial humic acid, extra- and intracellular organic matter from two species of algae, and Cyanobacteria were used for the investigation of the fouling potential of the membrane. A comparison study of different DOM removal and fouling behaviors of microfiltration (MF) after GAC adsorption as pretreatment was evaluated under variable GAC dosage and solution pH. Almost 15–20% improvement in flux and decline in irreversible fouling occurred due to the pretreatment using 1.0 g/L of GAC for an hour. The intracellular material caused higher membrane fouling than humic acid due to the hydrophilic nature of the AOM. Membrane fouling and decline in flux increased with increasing pH in the range of 5.0–8.0. The comparison results might help to provide insights into the real challenge of dealing with the treatment of algal-laden water.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135347297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Get prepared for unexpected disasters via advanced analytics and simulation techniques for urban hydraulic engineering and water infrastructure 通过城市水利工程和水利基础设施的先进分析和模拟技术，为意外灾害做好准备

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-10-03 DOI: 10.2166/aqua.2023.404

Weiqiang Wang, Yang Yu, Tianyu Xie, Qi Wang

引用次数: 0

Analysis of the impact of roughness coefficient changes due to land use changes on the hydraulics of the Kashafrood River 土地利用变化引起的粗糙度系数变化对喀什弗洛德河水力学的影响分析

4区环境科学与生态学

AQUA-Water Infrastructure Ecosystems and Society Pub Date : 2023-09-25 DOI: 10.2166/aqua.2023.038

Mohammad Nazarjan, Ali Saremi, Ali Reza Eslami, Vahid Yazdani

{"title":"Analysis of the impact of roughness coefficient changes due to land use changes on the hydraulics of the Kashafrood River","authors":"Mohammad Nazarjan, Ali Saremi, Ali Reza Eslami, Vahid Yazdani","doi":"10.2166/aqua.2023.038","DOIUrl":"https://doi.org/10.2166/aqua.2023.038","url":null,"abstract":"Abstract Mashhad's Kashafrood basin has been affected by land use changes, urbanization, and the development of agricultural water resources. This basin is located in the Razavi Khorasan province, Mashhad city. This research analyzes the impact of land use changes on river flow from a hydraulic point of view. For this purpose, the studied area was divided into five sub-basins and flood values were calculated using Deacon's method and different return periods for the sub-basins. In order to determine the intensity and extent of lateral erosion, two factors, the height of the terraces (H) and the amount of erosion activity (T), were measured, separated into different classes and evaluated. Also, the river was simulated under different hydraulic regimes. The results showed that the effects of erosion in more than 50% of the observation path and the 25-year discharge entered the bed area. The highest sensitivity to changes in the roughness coefficient is related to the flow surface and the width of the upper surface. Based on this, this research provides valuable information for land use management, understanding the impact of land use changes on river basins, and for decision-making by the executives.","PeriodicalId":34693,"journal":{"name":"AQUA-Water Infrastructure Ecosystems and Society","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135814798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0