Water Science and Technology最新文献_第9页

The high-resolution evaluation water footprint and virtual water trade of cotton in Türkiye. 云南棉花的高分辨率评价水足迹与虚拟水贸易。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-02-11 DOI: 10.2166/wst.2026.219

Caner Yerli

{"title":"The high-resolution evaluation water footprint and virtual water trade of cotton in Türkiye.","authors":"Caner Yerli","doi":"10.2166/wst.2026.219","DOIUrl":"10.2166/wst.2026.219","url":null,"abstract":"The virtual water (VW), which defines the water embedded in the commodities in the water flow throughout the entire process, and the expanded water footprint (WF) that includes it, has come to the forefront by defining the type-place-time-volume of water. This study analysed the WF with water types and VW trade of cotton with high water requirements, which has a continuity in the export-import cycle, for Türkiye, a leading cotton producer, by using high-resolution, long-time-segmented data input and taking into account the remaining winter precipitation in the country and provinces. The WF of cotton on a provincial basis has changed significantly depending on production conditions, soil-climate factors; on average, blue, green, and grey WFs constituted 72.6% (2,407.0 m3 ton-1), 14.4% (476.6 m3 ton-1), and 13.0% (430.4 m3 ton-1) of the total WF (3,314.0 m3 ton-1), respectively. The total WF of cotton exports in Türkiye regarding VW transfer is 839 Gm3 year-1, consisting of blue, green and grey VW contents of 609, 121, and 109 Gm3 year-1, respectively, and, the imports are higher than exports have resulted in a cotton import WF of 2,625 Gm3 year-1, which has resulted in a positive water balance of 1,787 Gm3 year-1 for cotton in Türkiye.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 4","pages":"483-502"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322319","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

Assessment of nitrate contamination and groundwater suitability in a hyper-arid region using GWQI, PCA, and geochemical tools. 基于GWQI、PCA和地球化学工具的超干旱区硝酸盐污染和地下水适宜性评价

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-01-29 DOI: 10.2166/wst.2026.207

Imane Radja, Abdessamed Derdour, Tayyib Moussaoui, Abdulrahman Seraj Almalki, Prabhu Paramasivam, Khaled A El-Nagdy, Mohamed A Eizeldin

{"title":"Assessment of nitrate contamination and groundwater suitability in a hyper-arid region using GWQI, PCA, and geochemical tools.","authors":"Imane Radja, Abdessamed Derdour, Tayyib Moussaoui, Abdulrahman Seraj Almalki, Prabhu Paramasivam, Khaled A El-Nagdy, Mohamed A Eizeldin","doi":"10.2166/wst.2026.207","DOIUrl":"10.2166/wst.2026.207","url":null,"abstract":"Groundwater contamination, particularly nitrate pollution, poses serious health and environmental risks in hyper-arid regions, where water scarcity compounds these challenges. Despite its critical importance, comprehensive frameworks for assessing groundwater quality, focusing on nitrate contamination, remain limited. This study aims to evaluate nitrate contamination and overall suitability of groundwater for drinking and farming purposes in the hyper-arid Adrar region of southwestern Algeria, where salinity and nitrate pollution pose significant risks. One hundred and thirty groundwater specimens were gathered and analyzed for 12 physicochemical features. To assess contamination sources and water quality, an integrated approach combining the groundwater quality index (GWQI), principal component analysis (PCA), and geochemical tools (Gibbs and Piper diagrams) was applied. Results indicate that 80% of the samples were deemed to be in 'extremely poor' condition (GWQI > 150), with a mean total dissolved solids (TDS) concentration of 1,484.70 mg/L and nitrate concentrations averaging 43.05 mg/L, both of which exceed World Health Organization standards. PCA identified salinity (47.33% variance) and nitrate contamination (9.95% variance) as the primary contributors, which are linked to mineral dissolution and agricultural inputs. The findings underscore the urgent need for sustainable water management and provide a replicable model for assessing groundwater quality in similarly challenged regions.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 4","pages":"428-450"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322313","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

Study on the operational performance for low-temperature high-salt wastewater desalination by the air-bubbling method. 空气鼓泡法低温高盐废水脱盐运行性能研究。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-02-09 DOI: 10.2166/wst.2026.223

Yuchi Liu, Zhigen Wu, Xingjuan Yu, Dan Zhou, HongBo Han

引用次数: 0

Green preparation of pyrrhotite-activated H₂O₂ for tetracycline degradation: performance and mechanism. 绿色制备磁黄铁矿活化H2O2降解四环素：性能及机理。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-01-22 DOI: 10.2166/wst.2026.203

Hanlin Wang, Ziyang Chu, Mengxue Li, Tianhu Chen

{"title":"Green preparation of pyrrhotite-activated H2O2 for tetracycline degradation: performance and mechanism.","authors":"Hanlin Wang, Ziyang Chu, Mengxue Li, Tianhu Chen","doi":"10.2166/wst.2026.203","DOIUrl":"10.2166/wst.2026.203","url":null,"abstract":"Pyrrhotite (Fe1-xS) was prepared by the pyrolysis of pyrite and the sulfidation of hematite, and subsequently used to activate H2O2 for the degradation of tetracycline (TC). The pyrite-derived Fe1-xS samples (P600 and P700) and the hematite-derived Fe1-xS samples (S600, S700), prepared at 600 and 700 °C, respectively, were characterized using X-ray diffraction (XRD), X-ray photoelectronic spectroscopy (XRS), scanning electron microscopy (SEM) and magnetism analysis. The effects of annealing temperature, preparation method, and initial solution pH on TC degradation were systematically investigated. The results showed that the degradation of TC increased with the decrease in annealing temperature and initial solution pH. Quenching experiments and electron spin resonance (ESR) demonstrated that •OH and 1O2 were reactive oxygen species (ROSs) in acidic and alkaline media, respectively. Moreover, the sulfidation-derived pyrrhotite, featuring a monoclinic Fe1-xS shell, exhibited superior catalytic performance than pyrolysis-derived pyrrhotite with a hexagonal Fe1-xS shell. Notably, 1O2 was easier to produce in the P600/H2O2 system. Both P600 and S600 maintained a high catalytic activity after five runs. These findings offer a novel approach for pyrrhotite preparation and promote the comprehensive utilization of pyrite and hematite.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 3","pages":"318-331"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182800","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

Inlet modifications for increased box culvert capacity: a numerical modelling approach. 增加箱形涵洞容量的入口修改：数值模拟方法。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-02-06 DOI: 10.2166/wst.2026.218

Thea Maria Dorothea Giliomee, Ione Loots, Marco van Dijk

{"title":"Inlet modifications for increased box culvert capacity: a numerical modelling approach.","authors":"Thea Maria Dorothea Giliomee, Ione Loots, Marco van Dijk","doi":"10.2166/wst.2026.218","DOIUrl":"10.2166/wst.2026.218","url":null,"abstract":"Inlet modifications applied to culverts can increase the culvert discharge capacity, which will help stormwater drainage systems adapt to larger flood events. Wingwalls and headwalls are already widely used as retaining structures. It is therefore feasible to optimise these inlet structures to increase culvert capacity. Building upon previous physical modelling research, this study evaluated a wider range of headwall and wingwall angle combinations to refine the findings. Headwalls and wingwalls were compared with rounded-edge box culvert inlets with the aim of improving capacity under inlet control. Numerical modelling was used to optimise wingwalls and headwalls and rounded-edge inlets, quantify their improvement, and verify the alignment of results with established references and guidelines. A 15° headwall with a 15° wingwall added to a box culvert improved the flow by up to 34% at a headwater depth of twice the culvert height (2D), or up to 26% at 1.2D. This solution provides the best balance between hydraulic performance and practical implementation. The largest improvement obtained by rounding the edges of a square box culvert is 30% at 2D. Inlet modifications provide a sustainable solution to increase culvert drainage capacity, which can mitigate flood risks.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 4","pages":"469-482"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322321","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

Determining sediment quality criteria and ecological risk thresholds for cadmium in sediment using equilibrium partitioning and bioassays: a case study of Baiyangdian Lake. 利用平衡分配和生物测定法确定沉积物中镉的质量标准和生态风险阈值——以白洋淀为例

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-02-13 DOI: 10.2166/wst.2026.204

Qu Wenfeng, Fu Deyu, Xi Yin, Wang Shengrui

{"title":"Determining sediment quality criteria and ecological risk thresholds for cadmium in sediment using equilibrium partitioning and bioassays: a case study of Baiyangdian Lake.","authors":"Qu Wenfeng, Fu Deyu, Xi Yin, Wang Shengrui","doi":"10.2166/wst.2026.204","DOIUrl":"10.2166/wst.2026.204","url":null,"abstract":"We quantified the ecological risks posed by cadmium (Cd) in Baiyangdian Lake (BYDL) sediments, and established region-specific sediment quality criteria (SQC) and risk thresholds, using an approach that combined benthic bioassays with an improved version of the equilibrium partitioning (EqPA) method that incorporated acid volatile sulfide (AVS)-bound and residual fraction correction terms. The resulting SQC for Cd in BYDL sediments was 9.01 mg/kg, which was substantially higher than other threshold effects level (2.58 mg/kg) and is attributable to the suppression of Cd bioavailability by AVS in the sediments (average logKp = 3.86). Furthermore, we conducted a 21-day exposure experiment using the native bivalve Anodonta woodiana at Cd concentrations between 1 and 20 mg/kg. Significant impacts were observed at concentrations ≥15 mg/kg, including reduced survival (70%), increased tissue accumulation (4.93 mg/kg), and the inhibition of the superoxide dismutase and carboxylesterase enzymes (>40%). By integrating the data from the benthic bioassays, enzyme activity analysis, and the EqPA method, we determined an ecological risk threshold of 10-15 mg/kg for Cd in BYDL sediments. This region-specific threshold can support targeted sediment management in BYDL, and the combined EqPA-bioassay approach provides a method for developing sediment quality benchmarks elsewhere.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 4","pages":"401-410"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322272","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

Regularized and explainable machine learning framework for anthropogenic-climate coupled prediction of wastewater influent in hyper-arid urban utilities. 用于超干旱城市公用事业中人为-气候耦合预测的规范化和可解释的机器学习框架。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-01-24 DOI: 10.2166/wst.2026.205

Abdullah A Alsumaiei

{"title":"Regularized and explainable machine learning framework for anthropogenic-climate coupled prediction of wastewater influent in hyper-arid urban utilities.","authors":"Abdullah A Alsumaiei","doi":"10.2166/wst.2026.205","DOIUrl":"10.2166/wst.2026.205","url":null,"abstract":"Predicting wastewater influent is essential for reliable, energy-efficient operation in climate-sensitive, data-limited utilities. This study benchmarks monthly influent forecasts for major treatment plants in Kuwait using stepwise linear regression (SLR), ensemble trees (ET), support vector machines (SVM), kernel approximation, and penalized linear baseline (LASSO), with air temperature, relative humidity, municipal water consumption, and population as predictors. A five-fold cross-validation with a chronologically held-out test block is adopted. Performance is reported using RMSE, MAE, MSE, R2, and MAPE. LASSO achieved the lowest test errors while selecting a sparse specification; SLR/ET were close, and kernel methods underperformed. Model behavior was examined using SHAP summary and feature importance plots. Results indicate that low-complexity, transparent models, particularly penalized linear models, provide strong skill at low tuning cost, supporting operator trust and auditability. The framework offers actionable month-ahead guidance for load management, storage/reuse planning, and alternative water-supply decisions in hyper-arid utilities.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 3","pages":"296-317"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182728","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

Combining inflow and infiltration assessment methods to enhance insights in data-scarce contexts: application to 46 Brazilian systems. 结合流入和渗透评估方法，增强对数据稀缺环境的洞察力：在46个巴西系统中的应用。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-01-09 DOI: 10.2166/wst.2026.194

Gabrielle Marega, Jennifer Drake, David D J Meyer

{"title":"Combining inflow and infiltration assessment methods to enhance insights in data-scarce contexts: application to 46 Brazilian systems.","authors":"Gabrielle Marega, Jennifer Drake, David D J Meyer","doi":"10.2166/wst.2026.194","DOIUrl":"10.2166/wst.2026.194","url":null,"abstract":"Excessive inflow and infiltration (I&I) can compromise sanitary sewer safety and resilience. I&I assessments support the design and operation of resilient sanitary sewers, but data scarcity in low- and middle-income countries hinders many traditional I&I assessment methods. This paper introduces a two-stage approach, leveraging multiple I&I assessment methods. First, I&I assessment methods are compared to reveal network and data concerns. Second, I&I methods are combined in inverse proportion to their sensitivity to variable (mis)estimation to improve accuracy. When combining water balance and pollutant mass flux methods, higher I&I assessments receive larger weights since they are less sensitive to variable misestimation. Our proposed combination of these methods (the hybrid method) had negligible bias (<0.2%) and improved accuracy (reduced mean average percentage error by >10 percentage points). We applied this hybrid method to assess quarterly I&I over two decades in 46 sanitary sewer networks in Brazil, combining water balance and pollutant mass flux methods (using biological oxygen demand). I&I consumed 24% of total sewer capacity and >50% of capacity in four networks. Unlike previous I&I research, we propose and demonstrate how to learn from and combine multiple I&I assessment methods; our approach proved well-suited for data-sparse environments, increasing accuracy and insights.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 3","pages":"227-240"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182805","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

New insights into long-term impacts of sulfamethoxazole on anaerobic/oxic/anoxic (AOA) processes performance, sludge properties, and microbial oxidative stress mechanisms. 磺胺甲恶唑对厌氧/缺氧（AOA）工艺性能、污泥特性和微生物氧化应激机制的长期影响的新见解。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-01-28 DOI: 10.2166/wst.2026.206

Xiao Tang, Xuefei Zhang

{"title":"New insights into long-term impacts of sulfamethoxazole on anaerobic/oxic/anoxic (AOA) processes performance, sludge properties, and microbial oxidative stress mechanisms.","authors":"Xiao Tang, Xuefei Zhang","doi":"10.2166/wst.2026.206","DOIUrl":"10.2166/wst.2026.206","url":null,"abstract":"The widespread detection of sulfamethoxazole (SMX) in aquatic environments necessitates understanding its impact on the anaerobic/oxic/anoxic (AOA) process. This study systematically elucidated the multidimensional mechanisms by which SMX affects AOA system performance, sludge characteristics, and microbial metabolism, integrating analyses of oxidative stress and sludge parameters. Results demonstrated concentration- and time-dependent effects. Long-term exposure to medium-high SMX concentrations (≥5 mg/L) significantly inhibited microbial metabolic activity (13.5% decrease in specific oxygen utilization rate, suppression of polyphosphate synthetase), induced oxidative damage (46.3% increase in lactate dehydrogenase leakage), and reduced removal efficiencies for ammonium nitrogen (9.1%), total nitrogen (15.9%), and phosphate phosphorus (12.5%). Concurrently, it decreased sludge biomass (13.8% lower volatile suspended solids/total suspended solids ratio), worsened settleability (12.2% increase in sludge volume index), and disrupted extracellular polymeric substance (EPS) composition (PN/PS ratio decreased to 1.6). While low-concentration SMX (0.5 mg/L) elicited a transient stress response (10% compensatory EPS increase), microbial community adaptation ensured system stability. These findings reveal novel interference mechanisms of SMX in biological nutrient removal. Proposed strategies for microbial community optimization and process regulation offer crucial theoretical support and technical pathways for efficiently treating SMX-containing wastewater, advancing practical engineering applications for antibiotic pollution control.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 3","pages":"256-272"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182737","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

Environmental impact of a domestic wastewater treatment plant using LCA approach under various treatment scenarios: a case study in Bangladesh. 不同处理方案下使用LCA方法的家庭污水处理厂的环境影响：孟加拉国案例研究。

IF 2.8 4区环境科学与生态学

Water Science and Technology Pub Date : 2026-02-01 Epub Date: 2026-02-12 DOI: 10.2166/wst.2026.225

Pranta Bhowmik, Tanvir Ahmed

{"title":"Environmental impact of a domestic wastewater treatment plant using LCA approach under various treatment scenarios: a case study in Bangladesh.","authors":"Pranta Bhowmik, Tanvir Ahmed","doi":"10.2166/wst.2026.225","DOIUrl":"10.2166/wst.2026.225","url":null,"abstract":"This study aims to determine the environmental footprint of the Dasherkandi WWTP in Dhaka, Bangladesh, using the life cycle assessment (LCA) approach. Five treatment scenarios have been developed considering various technological and resource recovery options, using a 'gate-to-gate' approach. The CML baseline 2000 method was used to determine the environmental impact. The net environmental benefits for scenario having tertiary treatment for water reclamation and anaerobic digestion for biogas generation were several orders of magnitude higher compared to those in the baseline scenario, particularly for impact categories such as abiotic depletion (2.7 times), acidification potential (3.0 times), ozone layer depletion (5.7 times), terrestrial ecotoxicity (1.9 times), and photochemical oxidation (3.3 times). Tertiary treatment (with water reclamation) has been found to reduce the corresponding environmental impacts by 1.4 to 8.6 times over all impact categories. An economic analysis showed that 4.49 BDT (1 BDT ≈ 0.0082USD) net financial gain could be realized with revenues from reclaimed water, biogas electricity, and fertilizer per m3 of wastewater treated. These findings can guide the design of environmentally and economically sustainable treatment technologies in developing countries like Bangladesh.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"93 4","pages":"534-551"},"PeriodicalIF":2.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322351","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