Water science and engineering最新文献_第8页

A novel method for measuring interaction among multiple objectives in reservoir operation using niche theory 利用生态位理论，提出了一种测量油藏作业中多目标相互作用的新方法

IF 3.7

Water science and engineering Pub Date : 2025-03-01 Epub Date: 2024-03-05 DOI: 10.1016/j.wse.2024.03.002

Xiao-kuan Ni , Zeng-chuan Dong , Wen-hao Jia , Wen-zhuo Wang , Wei Xie , Hong-yi Yao , Mu-feng Chen , Tian-yan Zhang , Zhuo-zheng Li

{"title":"A novel method for measuring interaction among multiple objectives in reservoir operation using niche theory","authors":"Xiao-kuan Ni , Zeng-chuan Dong , Wen-hao Jia , Wen-zhuo Wang , Wei Xie , Hong-yi Yao , Mu-feng Chen , Tian-yan Zhang , Zhuo-zheng Li","doi":"10.1016/j.wse.2024.03.002","DOIUrl":"10.1016/j.wse.2024.03.002","url":null,"abstract":"<div><div>Accurate capture and presentation of the interactive feedback relationships among various objectives in multi-objective reservoir operation is essential for maximizing operational benefits. In this study, the niche theory of ecology was innovatively applied to the field of reservoir operation, and a novel state–relationship (S–R) measurement analysis method was developed for multi-objective reservoir operation. This method enables the study of interaction among multiple objectives. This method was used to investigate the relationship among the objectives of power generation, water supply, and ecological protection for cascade reservoir operation in the Wujiang River Basin in China. The results indicated that the ecological protection objective was the most competitive in acquiring and capturing resources like flow and water level, while the water supply objective was the weakest. Power generation competed most strongly with ecological protection and relatively weakly with water supply. These findings facilitate decision-making throughout the reservoir operation process in the region. The S–R method based on the niche theory is convenient, efficient, and intuitive, allowing for the quantification of feedback relationships among objectives without requiring the solution of the Pareto frontier of a multi-objective problem in advance. This method provides a novel and feasible idea for studying multi-objective interactions.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 78-89"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and enhanced photocatalytic performance of N-TiO2/g-C3N4 heterostructure for Rhodamine B degradation 用于降解罗丹明 B 的 N-TiO2/g-C3N4 异质结构的制备及其增强的光催化性能

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2023-12-30 DOI: 10.1016/j.wse.2023.12.007

{"title":"Preparation and enhanced photocatalytic performance of N-TiO2/g-C3N4 heterostructure for Rhodamine B degradation","authors":"","doi":"10.1016/j.wse.2023.12.007","DOIUrl":"10.1016/j.wse.2023.12.007","url":null,"abstract":"<div><div>Highly efficient photocatalysts have been developed for the degradation of contaminated water under visible light. In this study, N-doped TiO<sub>2</sub> (N-TiO<sub>2</sub>) and metal-free graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) composites with various Ti/C molar ratios were prepared with the simple mixing-calcining method. The samples were characterized by X-ray diffraction, scanning electron microscopy, ultraviolet–visible diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The photocatalytic activity of N-TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> in the degradation of Rhodamine B (RhB) was investigated, and the electrochemical method was used to determine the origin of the enhanced photoactivity of N-TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>. The results showed that N-TiO<sub>2</sub> nanoparticles were dispersed on the surface of g-C<sub>3</sub>N<sub>4</sub> and formed a stable heterojunction structure with g-C<sub>3</sub>N<sub>4</sub>. The heterojunction between the two semiconductors could effectively prevent the recombination of photogenerated electrons and holes and improve the photocatalytic efficiency of the photocatalyst under visible light irradiation. The photocatalyst exhibited high stability, and the RhB degradation rate was still higher than 82.3% after five cycles.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 371-377"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel approach for quantifying upper reservoir leakage 量化上层储层渗漏的新方法

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2024-03-04 DOI: 10.1016/j.wse.2024.03.001

Wen-jie Yang , Yong Huang , Xiao-song Dong , Xu-feng Zhu , Zhong-bo Yu , Ke-han Miao

{"title":"A novel approach for quantifying upper reservoir leakage","authors":"Wen-jie Yang , Yong Huang , Xiao-song Dong , Xu-feng Zhu , Zhong-bo Yu , Ke-han Miao","doi":"10.1016/j.wse.2024.03.001","DOIUrl":"10.1016/j.wse.2024.03.001","url":null,"abstract":"<div><div>During the operational phases of the upper reservoir in a pumped storage power station, the water level, leakage area, and hydraulic gradient of the upper reservoir alter dynamically due to the cyclic pumping and draining activities. The rising groundwater level during storage introduces distinct leakage conditions within the reservoir basin, characterized by unsaturated, partially saturated, and saturated states. Consequently, reservoir basin leakage exhibits variability across these states. To address this issue, this study formulated rational assumptions corresponding to the three leakage states in a reservoir basin and derived analytical expressions for seepage calculation based on Darcy's law and the principles governing groundwater flow refraction. A case study was conducted to investigate the relationship between various factors and leakage. The results showed that leakage primarily depended on the permeability of the impermeable layer in the reservoir basin. The upper reservoir leakage was estimated, and the calculated leakage generally agreed with the measurements, offering insights into the leakage mechanism of the Liyang pumped storage power station. In addition, the reasons for disparities between measured and calculated leakage were analyzed, and the reliability of the developed method was validated. The findings of this study provide a foundation for the seepage control design of upstream reservoirs in similar projects.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 397-405"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A missing data processing method for dam deformation monitoring data using spatiotemporal clustering and support vector machine model 利用时空聚类和支持向量机模型的大坝变形监测数据缺失数据处理方法

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2024-08-30 DOI: 10.1016/j.wse.2024.08.003

Yan-tao Zhu , Chong-shi Gu , Mihai A. Diaconeasa

引用次数: 0

Hydraulic performance assessment of various submerged pile designs around an emerged dike 出露堤坝周围各种水下桩设计的水力性能评估

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2024-02-10 DOI: 10.1016/j.wse.2024.02.002

{"title":"Hydraulic performance assessment of various submerged pile designs around an emerged dike","authors":"","doi":"10.1016/j.wse.2024.02.002","DOIUrl":"10.1016/j.wse.2024.02.002","url":null,"abstract":"<div><div>This study aimed to devise strategies for alleviating the detrimental impacts of floods in the vicinity of a dike. Experiments were conducted in an open rectangular channel to investigate the flow dynamics under varying dike conditions. To address concerns related to intense whirls and concentrated flow around the dike head, comparative analysis was performed in terms of flow structures and energy reduction around I-shaped and T-shaped dikes with two ratios of wing length (<em>l</em><sub>w</sub>) to dike length (<em>l</em><sub>d</sub>) (<em>l</em><sub>w</sub>/<em>l</em><sub>d</sub> = 1.41 and 2.43). The T-shaped dike wings were equipped with diverse designs: angled footing, delta vane, and streamlined tapered, resulting in elevated backwater in front of the dike, reduced velocity, and enhanced energy reduction. The findings indicated that elongating the wing reciprocally affected the depth-averaged velocity (at the dike head and near the adjacent dike bank), concurrently impacting flow deflection, backwater rise, and energy reduction rate. The T-shaped dike, specifically with an angled footing (<em>l</em><sub>w</sub>/<em>l</em><sub>d</sub> = 2.43), yielded optimal outcomes. These included significant reductions in maximum energy (46%), tip velocity (98%), and dike adjacent bank velocity (90%), as well as significant flow deflection towards the mainstream, outperforming the I-shaped impermeable dike. The proposed solutions exhibit efficacy in mitigating rapid deterioration during floods, securing both the dike head and the neighboring bank to avert failures in high-energy flow.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 406-416"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139818838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of microplastic surface interactions in water and potential capturing methods 水中微塑料表面相互作用及潜在捕捉方法综述

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2023-12-21 DOI: 10.1016/j.wse.2023.11.008

{"title":"A review of microplastic surface interactions in water and potential capturing methods","authors":"","doi":"10.1016/j.wse.2023.11.008","DOIUrl":"10.1016/j.wse.2023.11.008","url":null,"abstract":"<div><div>Microplastics are emerging micropollutants in water threatening aquatic and land organisms. The microplastic–water system is complicated due to the multiple constituents in the water system and the minuscule size of the plastic waste. Although typical plastic-based materials are inert, the behavior of fragmented plastics is arbitrary and indefinite. When exposed to erratic water environments with the presence of organic and synthetic impurities, pH, temperature, and salt, microplastic surfaces may be potentially active and generate charges in water. These phenomena determine microplastics in water as a colloidal system. The classical Derjaguin Landau Verwey and Overbeek (DLVO) theory can be used to identify the microplastic surface behavior in water. The modification of microplastic surfaces eventually determines the overall interactions between microplastics and other constituents in water. Moreover, the geometry of microplastics and additives present in microcontaminants play a crucial role in their net interactions. Hence, multiple microplastic removal techniques, such as coagulation, filtration, and air flotation, can be developed to address the issue. In many cases, a combination of these methods may be needed to achieve the overall procedure in water treatment plants or generic water systems. Selection of an appropriate microplastic removal technique is crucial and should be based on the water environment and intended water use to ensure its safety.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 361-370"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139022054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing impacts of climate change-driven sea level rise on hydrodynamics and sediment dynamics along Ba Lang beaches in Nha Trang Bay, Khanh Hoa, Vietnam 了解气候变化导致的海平面上升对越南庆和省芽庄湾 Ba Lang 海滩水动力和沉积物动力学的影响

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2023-12-21 DOI: 10.1016/j.wse.2023.12.003

{"title":"Assessing impacts of climate change-driven sea level rise on hydrodynamics and sediment dynamics along Ba Lang beaches in Nha Trang Bay, Khanh Hoa, Vietnam","authors":"","doi":"10.1016/j.wse.2023.12.003","DOIUrl":"10.1016/j.wse.2023.12.003","url":null,"abstract":"<div><div>The Ba Lang sand beaches, located north of the Nha Trang Bay in Central Vietnam, are famous tourist attractions. However, they are experiencing shoreline and coastal erosion retreat, which is attributed to natural causes (such as tropical depressions, storms, and monsoons) as well as human impacts (such as hydropower generation, sand dredging, and coastal works). According to the forecast of the Vietnam Ministry of Natural Resources and Environment, global climate change will cause the sea level to rise by 74 cm along the coast from the Dai Lanh Cape to the Ke Ga Cape (including the Ba Lang beaches) by the end of this century in the representative concentration pathway (RCP) 8.5 scenario. Sea level rise (SLR) due to global climate change is expected to aggravate the coastal erosion and shoreline retreat problems. In this study, coupled numerical models with the spectral wave module (MIKE 21 SW), hydrodynamic module (MIKE 21 HD), and sand transport module (MIKE 21 ST) in the MIKE 21 package were used to simulate waves, current fields, and sediment dynamics along the Ba Lang beaches considering the impact of SLR. These models were calibrated with the field data measured in December 2016. The results showed that SLR caused the wave height to increase and reduced the current speed and total sediment load in monsoon conditions. The increase in wave height was even intensified under the joint impact of SLR and extreme events.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 323-335"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139025884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Properties of dredged material and potential scope of its beneficial use: A case study of the Pussur River in Bangladesh 疏浚材料的特性及其有益利用的潜在范围：孟加拉国普苏尔河案例研究

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2023-12-28 DOI: 10.1016/j.wse.2023.12.005

{"title":"Properties of dredged material and potential scope of its beneficial use: A case study of the Pussur River in Bangladesh","authors":"","doi":"10.1016/j.wse.2023.12.005","DOIUrl":"10.1016/j.wse.2023.12.005","url":null,"abstract":"<div><div>The Pussur River, an important river in Bangladesh, requires approximately 6 × 10<sup>6</sup> m<sup>3</sup> of sediment to be dredged per year. At present, this dredged material is mainly dumped on the nearby agricultural and fish-cultivation lands, causing a reduction in productive land and producing negative impacts on people's livelihoods. This study aimed to investigate the engineering and environmental properties of the dredged sand of the Pussur River and evaluate the viability of its potential uses in different sectors. Bed sediments from the Pussur River and dredged material from disposal sites were collected, and laboratory investigations were performed. The test results showed that the dredged material of the Pussur River mainly consisted of fine sand with a fineness modulus ranging from 0.58 to 0.72 and could be classified as poorly graded sand according to the Unified Soil Classification System. This sand was also found suitable for land development, with a fair to poor suitability rating. Given the low concentration of heavy metals (at uncontaminated/slightly contaminated levels), the dredged sand might be safely used for land reclamation, landfill cover, and horticultural purposes, or else for other geotechnical applications without further treatment. After washing/leaching, the dredged sand could also be used as a partial replacement for local sand in concrete works. Moreover, there is a possibility of exporting the dredged sand to Singapore and the Maldives as filling material. These findings will help policymakers design dredging projects with a proper spoil management plan accounting for the dredged material's beneficial use.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 336-343"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tidal asymmetry and mud transport in Oualidia Lagoon: Actual conditions in 2012 and rehabilitation scenarios 瓦利迪亚泻湖的潮汐不对称和泥浆输送：2012 年的实际情况和修复方案

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2024-01-10 DOI: 10.1016/j.wse.2024.01.002

{"title":"Tidal asymmetry and mud transport in Oualidia Lagoon: Actual conditions in 2012 and rehabilitation scenarios","authors":"","doi":"10.1016/j.wse.2024.01.002","DOIUrl":"10.1016/j.wse.2024.01.002","url":null,"abstract":"<div><div>Oyster aquaculture in Oualidia Lagoon, Morocco, has suffered from poor water quality and water confinement in its upstream region. Tidal asymmetry (TA) has been suggested as a possible cause, and a sediment trap was dredged in 2011 to mitigate this condition. This study addresses TA in the lagoon using field measurements and numerical modeling in the presence of the sediment trap. Results indicate that the lagoon is flood-dominated mostly in its upstream end, where frictional forces exceed inertia accelerations during the tidal cycle and fine sediments settle on the tidal flats and inside the sediment trap. However, this study shows that a large mass of suspended sediments is exported to the ocean, which is contrary to expectations in flood-dominated lagoons. Defining the sediment trap as the rehabilitation scenario S1, the impacts of three additional scenarios on TA are examined. These are scenario S2 (dredging the upstream section of the main channel), scenario S3 (dredging the channels surrounding the flood delta near the inlets), and scenario S4 (raising the ocean level by 0.5 m following climate change predictions). Results show that none of these scenarios modify the tidal flood dominance in the lagoon, although scenarios S2 and S4 decrease its intensity in the upstream region. Nevertheless, all scenarios still contribute to a significant export of sediments to the ocean. This suggests that lagoon management activities should not rely on tidal asymmetry analyses that normally predict upstream sediment transport in flood-dominated lagoons.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 344-351"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139454446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of treatment and energy efficiencies of an advanced electrochemical system for Chlorella removal equipped with aluminum, graphite, and RGO nanoparticles-coated cathodes 评估采用铝、石墨和 RGO 纳米粒子涂层阴极的先进电化学系统去除小球藻的处理效率和能源效率

IF 3.7

Water science and engineering Pub Date : 2024-12-01 Epub Date: 2024-01-11 DOI: 10.1016/j.wse.2023.12.004

{"title":"Evaluation of treatment and energy efficiencies of an advanced electrochemical system for Chlorella removal equipped with aluminum, graphite, and RGO nanoparticles-coated cathodes","authors":"","doi":"10.1016/j.wse.2023.12.004","DOIUrl":"10.1016/j.wse.2023.12.004","url":null,"abstract":"<div><div>Advanced material sciences and technologies can help to address environmental challenges in order to achieve sustainable development goals by developing innovative materials capable of mitigating energy consumption in treatment systems. In this study, an innovative electrocoagulation unit for algae removal was optimized, and the effects of various variables, including novel cathode materials (i.e., graphite and reduced graphene oxide nanoparticles), on treatment efficiency and energy consumption were evaluated. Reduced graphene oxide nanoparticles were synthesized and then immobilized on the graphite cathode surface with the modified Hummer's method. Stabilization of nanoparticles was achieved with polytetrafluoroethylene. The use of the reduced graphene oxide nanoparticles-coated cathode led to a significant decrease (42.93%) in energy consumption, compared to the case with an aluminum cathode. In the optimum conditions (a current density of 3 mA/cm<sup>2</sup>, an electrolyte concentration of 2 g/L, an electrode surface area of 56 cm<sup>2</sup>, a processing time of 60 min, and a sedimentation time of 30 min), the novel electrocoagulation unit, equipped with an aluminum anode and a reduced graphene oxide nanoparticles-coated cathode electrode, achieved removal efficiencies of 72.69% for <em>Chlorella</em> species and 72.96% for turbidity.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 378-387"},"PeriodicalIF":3.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139457112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0