Water Science & Technology最新文献_第3页

Temporal and spatial variation in atmospheric wet deposition of nutrients and organic matter at the southern and northern foothills of the Qinling Mountains 秦岭南北麓大气养分和有机物湿沉降的时空变化

Water Science & Technology Pub Date : 2024-07-15 DOI: 10.2166/wst.2024.237

Fan Si, Kai Li, Tinglin Huang, Nan Li, Gang Wen, Daojun Huang

{"title":"Temporal and spatial variation in atmospheric wet deposition of nutrients and organic matter at the southern and northern foothills of the Qinling Mountains","authors":"Fan Si, Kai Li, Tinglin Huang, Nan Li, Gang Wen, Daojun Huang","doi":"10.2166/wst.2024.237","DOIUrl":"https://doi.org/10.2166/wst.2024.237","url":null,"abstract":"\u0000 \u0000 Wet deposition significantly impacts the basin ecosystem and water quality of the Qinling Mountains (QMs). However, few research focused on the difference in wet deposition between the northern (QN) and southern (QS) foothills due to the barrier effect of the QMs. This two-year investigation studied nutrient and organic matter deposition in QN and QS during summer and autumn. Results showed higher concentrations of nitrogen (N), phosphorus (P), dissolved organic carbon (DOC), and permanganate index (CODMn) in QN's rainwater, particularly in autumn. The CODMn in QN ranged 0.59–7.67 mg/L, and DOC ranged 0.64–4.45 mg/L. For QS, the CODMn ranged 0.71–3.25 mg/L, and DOC ranged 0.28–2.62 mg/L. Backward trajectory analysis revealed the accumulation of pollutants in QN originating from Northern China, intensified by autumn heating and straw burning. Tyrosine-like and humic-like components in rainwater DOM suggested that they primarily originated from autochthonous sources. Rainwater N:P mass ratios range from 39:1 to 145:1, highlighting a higher N input than P in QMs' wet deposition. The findings underscore the importance of atmospheric wet deposition in nutrient and organic matter input to the QMs and establish a foundation for exploring the ecological effects of wet deposition.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"97 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141647302","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

Study on the evolution of dissolved organic matter in the underground storage of mine water 关于矿井水地下储藏中溶解有机物演变的研究

Water Science & Technology Pub Date : 2024-07-15 DOI: 10.2166/wst.2024.238

Xiyu Zhang, Shuning Dong, Jidong Liang, Xiaoming Guo, Lingyun Huang

{"title":"Study on the evolution of dissolved organic matter in the underground storage of mine water","authors":"Xiyu Zhang, Shuning Dong, Jidong Liang, Xiaoming Guo, Lingyun Huang","doi":"10.2166/wst.2024.238","DOIUrl":"https://doi.org/10.2166/wst.2024.238","url":null,"abstract":"\u0000 \u0000 The water–rock interactions significantly affect the dissolution and release of dissolved organic matter (DOM) during the reinjection of mine water into the underground reservoir. In this study, the surface characteristics and chemical composition of the natural medium from the open-pit coal mine were characterized. The waste consists mainly of quartz-dominated sandstone (43.64%) and mudstone dominated by sanidine (76.36%). During the 35-day experiment, two protein-like, one humus-like, and one fulvic acid-like substances were identified by PARAFAC. It was observed that the type of aqueous medium significantly affected the variational trend of DOM. Compared to the artificial medium, the fluorescence intensity of waste materials in the waste dump increased significantly during the reinjection process. Therefore, a positive correlation was observed between the fraction of mudstone in the aqueous medium and the DOM composition, mainly due to the dissolution of polycyclic aromatic hydrocarbon substances from the mudstone. The results revealed that the natural water storage medium had a certain water storage feasibility when compared with the expensive artificial medium. However, the fraction of mudstone in the water storage medium should be controlled to minimize the release of organic matter into the environment.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"52 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644523","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

Toward smart wastewater treatment plants: a novel data-driven sludge blanket model based on stochastic differential equations 迈向智能污水处理厂：基于随机微分方程的新型数据驱动污泥毯模型

Water Science & Technology Pub Date : 2024-07-13 DOI: 10.2166/wst.2024.234

P. B. Vetter, P. A. Stentoft, T. Munk-Nielsen, Henrik Madsen, J. Møller

{"title":"Toward smart wastewater treatment plants: a novel data-driven sludge blanket model based on stochastic differential equations","authors":"P. B. Vetter, P. A. Stentoft, T. Munk-Nielsen, Henrik Madsen, J. Møller","doi":"10.2166/wst.2024.234","DOIUrl":"https://doi.org/10.2166/wst.2024.234","url":null,"abstract":"\u0000 A novel data-driven model for forecasting the sludge blanket height in secondary clarifiers is presented. The model is trained on sensor measurements of the sludge blanket height and used as inputs such as (1) the clarifier feed flow rate, (2) feed suspended solids concentration, and (3) the clarifier recycle flow rate. The model’s prediction accuracy is evaluated based on data from two Danish wastewater treatment plants by means of root-mean-square errors (RMSEs), and results are compared against a persistence model. We demonstrate that the developed model is superior to the persistence forecast at both plants during high blanket dynamics. In the best scenario, the model improves the RMSE by 0.1/0.4 m at prediction horizons of 2.5/10 h, assuming known inputs. The model performance is subsequently considered with forecasted inputs using two different forecast scenarios. We discuss differences in the two plants’ performance and requirements to achieve good model performance. The model is well-suited for a model predictive control strategy, whose purpose ultimately is to improve clarifier control, increasing hydraulic capacity and reducing overflow suspended solids.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"38 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141651148","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

Single-atom catalysts activate persulfate to degrade emerging organic contaminants in aqueous environments 单原子催化剂激活过硫酸盐，降解水环境中新出现的有机污染物

Water Science & Technology Pub Date : 2024-07-12 DOI: 10.2166/wst.2024.236

Zixun Qin, Zhonglei Zhang, Ji Li, Jin Liu, Jinsheng Wang, Xiaoguo Chen, Yangyang Wang, Lei Wang

引用次数: 0

Towards a modelling framework for nature-based solutions in wastewater treatment 为基于自然的废水处理解决方案建立建模框架

Water Science & Technology Pub Date : 2024-07-12 DOI: 10.2166/wst.2024.235

Ali Reza Dehghani Tafti, Dwight Houweling, Jean-Michel Perron, Daniel Bencsik, Tom Johnson, Peter A. Vanrolleghem, Yves Comeau

{"title":"Towards a modelling framework for nature-based solutions in wastewater treatment","authors":"Ali Reza Dehghani Tafti, Dwight Houweling, Jean-Michel Perron, Daniel Bencsik, Tom Johnson, Peter A. Vanrolleghem, Yves Comeau","doi":"10.2166/wst.2024.235","DOIUrl":"https://doi.org/10.2166/wst.2024.235","url":null,"abstract":"\u0000 \u0000 This article presents the authors’ perspectives on modelling best practices for nature-based solutions (NBS). The authors led a workshop on NBS modelling as part of the 8th IWA Water Resource Recovery Modelling Seminar (WRRmod2022+) in January 2023, where the discussion centred around the design, use cases, and potential applications of NBS models. Four real-world case studies, encompassing an aerated lagoon, a biofilm-enhanced aerated lagoon, a stormwater basin, and a constructed wetland were reviewed to demonstrate practical applications and challenges in modelling NBS systems. The initial proposed modelling framework was derived from these case studies and encompassed eight sub-models used for these NBS types. The framework was subsequently extended to include 8 additional NBS categories, requiring a total of 10 sub-models. In a subsequent step, with a different perspective, the framework was refined to focus on 13 primary use cases of NBS, identifying 10 sub-models needed or potentially required for these specific NBS applications. These frameworks help to identify the necessary sub-models for the NBS system at hand or the use case. This article also discusses the benefits and challenges of applying water resource recovery modelling best practices to NBS, along with recommendations for future research in this area.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"70 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653137","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

Identification of illicit discharges in sewer networks by an SWMM-Bayesian coupled approach 采用 SWMM-Bayesian 耦合方法识别下水道网络中的非法排放物

Water Science & Technology Pub Date : 2024-07-11 DOI: 10.2166/wst.2024.233

Liyuan Yang, Biao Huang, Jiachun Liu

{"title":"Identification of illicit discharges in sewer networks by an SWMM-Bayesian coupled approach","authors":"Liyuan Yang, Biao Huang, Jiachun Liu","doi":"10.2166/wst.2024.233","DOIUrl":"https://doi.org/10.2166/wst.2024.233","url":null,"abstract":"\u0000 Illicit discharges into sewer systems are a widespread concern within China's urban drainage management. They can result in unforeseen environmental contamination and deterioration in the performance of wastewater treatment plants. Consequently, pinpointing the origin of unauthorized discharges in the sewer network is crucial. This study aims to evaluate an integrative method that employs numerical modeling and statistical analysis to determine the locations and characteristics of illicit discharges. The Storm Water Management Model (SWMM) was employed to track water quality variations within the sewer network and examine the concentration profiles of exogenous pollutants under a range of scenarios. The identification technique employed Bayesian inference fused with the Markov chain Monte Carlo sampling method, enabling the estimation of probability distributions for the position of the suspected source, the discharge magnitude, and the commencement of the event. Specifically, the cases involving continuous release and multiple sources were examined. For single-point source identification, where all three parameters are unknown, concentration profiles from two monitoring sites in the path of pollutant transport and dispersion are necessary and sufficient to characterize the pollution source. For the identification of multiple sources, the proposed SWMM-Bayesian strategy with improved sampling is applied, which significantly improves the accuracy.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"51 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655713","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

A dynamic compartmental model of a sequencing batch reactor (SBR) for biological phosphorus removal 用于生物除磷的序批式反应器（SBR）的动态分区模型

Water Science & Technology Pub Date : 2024-07-09 DOI: 10.2166/wst.2024.231

S. Daneshgar, Sina Borzooei, Lukas Debliek, Elias Van Den Broeck, Riet Cornelissen, Piet de Langhe, Cesare Piacezzi, Miguel Daza, S. Duchi, U. Rehman, I. Nopens, E. Torfs

{"title":"A dynamic compartmental model of a sequencing batch reactor (SBR) for biological phosphorus removal","authors":"S. Daneshgar, Sina Borzooei, Lukas Debliek, Elias Van Den Broeck, Riet Cornelissen, Piet de Langhe, Cesare Piacezzi, Miguel Daza, S. Duchi, U. Rehman, I. Nopens, E. Torfs","doi":"10.2166/wst.2024.231","DOIUrl":"https://doi.org/10.2166/wst.2024.231","url":null,"abstract":"\u0000 Bioreactors are usually modelled as continuous stirred tank reactors (CSTRs) or CSTRs connected in series (Tanks-In-Series configuration). In large systems with non-ideal mixing, such approaches do not sufficiently capture the complex hydrodynamics, leading to model inaccuracies due to the lumping of spatial gradients. Highly detailed computational fluid dynamics (CFD) models provide insight into complex hydrodynamics but are computationally too expensive for flow-sheet models and digital twin applications. A compartmental model (CM) can be a middle-ground by providing a more realistic representation of the hydrodynamics and still being computationally affordable. However, the hydrodynamics of a plant can be very different under varying flow conditions. Dynamic CMs can capture these changes in an elegant way. So far, the application of CMs has been limited mostly to continuous flow systems. In this study, a dynamic CM of a sequencing batch reactor (SBR) is developed for a bio-P removal process. The SBR comes with challenges for CM development due to its distinct operational stages. The dynamic CM shows significant improvements over the CSTR model (using the same biokinetic parameters) for dissolved oxygen and phosphate predictions reducing the need for model recalibration that can lead to over-fitting and limited extrapolation capability of the model.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"40 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141665077","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

A CFD-based compartmental modelling approach for long-term dynamic simulation of water resource recovery facilities 基于 CFD 的分区建模方法，用于水资源回收设施的长期动态模拟

Water Science & Technology Pub Date : 2024-07-09 DOI: 10.2166/wst.2024.230

Asier Romay, Beñat Elduayen, Borja Hernández, Gorka Sánchez, Rosario Arnau, Javier Climent, Eduardo Ayesa

{"title":"A CFD-based compartmental modelling approach for long-term dynamic simulation of water resource recovery facilities","authors":"Asier Romay, Beñat Elduayen, Borja Hernández, Gorka Sánchez, Rosario Arnau, Javier Climent, Eduardo Ayesa","doi":"10.2166/wst.2024.230","DOIUrl":"https://doi.org/10.2166/wst.2024.230","url":null,"abstract":"\u0000 \u0000 This article presents a methodology for compartmental model (CM) creation for long-term simulation of water resource recovery facilities (WRRFs). CMs are often focused on reproducing with a lower computational cost than previously simulated scenarios. In contrast, the methodology presented here can represent variable hydraulic conditions, based on the interpolation of data gathered from a set of computational fluid dynamics simulations that reproduce representative hydraulic scenarios. This is achieved by modelling with bidirectional flows the exchange flows between fixed compartments, which are defined based on the geometry of the reactors. The resultant hydraulic surrogate model can be implemented in commercial water treatment software to solve biochemical kinetics. The methodology was applied to simulate in WEST®-DHI, a WRRF in Vila-Real, Spain. In this contribution, the CM was validated with real plant data. The developed CM provided a quick response simulation with a high level of hydraulic and biochemical detail. This allowed us to observe a spatial distribution of component concentration, which could help with sensor location or plant optimisation. The methodology presented here could also be a useful enabler of digital twins to be implemented in WRRF.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"55 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141663110","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

Impact of feeding regimes on the performance of anaerobic sequencing batch membrane bioreactor treating wastewater from an urban drain 进料制度对厌氧序批式膜生物反应器处理城市下水道废水性能的影响

Water Science & Technology Pub Date : 2024-07-09 DOI: 10.2166/wst.2024.232

Sachin Kumar Tomar, Aditi Deshpande, Sourbh Dhiman, Ravi Karan Singh, Malini Balakrishnan

{"title":"Impact of feeding regimes on the performance of anaerobic sequencing batch membrane bioreactor treating wastewater from an urban drain","authors":"Sachin Kumar Tomar, Aditi Deshpande, Sourbh Dhiman, Ravi Karan Singh, Malini Balakrishnan","doi":"10.2166/wst.2024.232","DOIUrl":"https://doi.org/10.2166/wst.2024.232","url":null,"abstract":"\u0000 \u0000 This work evaluated an anaerobic sequencing batch membrane bioreactor (AnSBR-MBR) equipped with waste-based ceramic membranes for treating low-strength real drain wastewater. Two feeding regimes, viz. settled feed (Phase 1) and mixed feed (Phase 2) were compared. The biological performance (chemical oxygen demand (COD) and phosphate (PO43-) removal) and filtration performance (total suspended solids (TSS) removal and membrane fouling) were investigated. The reactor characteristics in terms of solids content, sludge settling behaviour, and extracellular polymeric substances (EPS) were also assessed. In Phase 1, the settled feed (with the absence of particulate organic matter) resulted in low volatile suspended solids (VSS; 0.23 ± 0.15 g/L), causing low COD removal (28.38 ± 8.14%). In the mixed feed regime in Phase 2, VSS increased (1.82 ± 0.60 g/L) due to the organic content in the particulate matter, which gave microorganisms additional food, resulting in increased COD removal (47.42 ± 2.81%); this phase was also characterised by lower membrane fouling because of the lower EPS content. Marginally higher TSS removal was obtained as well in Phase 2 (96.72 ± 3.26%) than in Phase 1 (90.48 ± 8.14%). This work demonstrates that AnSBR-MBR performance is superior with mixed drain wastewater containing suspended solids and thus pre-settling is not recommended.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":"54 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141663321","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

Evaluating the effect of antibiotics on aerobic granular sludge treatment of pharmaceutical wastewater 评估抗生素对好氧颗粒污泥处理制药废水的影响

Water Science & Technology Pub Date : 2024-07-05 DOI: 10.2166/wst.2024.226

Zhenghao Cao, Anning Sai, Xiangxiang Jia, Xiaoyu Zhang

{"title":"Evaluating the effect of antibiotics on aerobic granular sludge treatment of pharmaceutical wastewater","authors":"Zhenghao Cao, Anning Sai, Xiangxiang Jia, Xiaoyu Zhang","doi":"10.2166/wst.2024.226","DOIUrl":"https://doi.org/10.2166/wst.2024.226","url":null,"abstract":"\u0000 Aerobic granular sludge (AGS) has been widely applied in pharmaceutical wastewater treatment due to its advantages such as high biomass and excellent settling performance. However, the influence of commonly found antibiotics in pharmaceutical wastewater on the operational efficiency of AGS has been poorly explored. This study investigated the effects of tetracycline (TE) on AGS treating pharmaceutical wastewater at room temperature and analyzed the related mechanisms. The results demonstrate a dose-dependent relationship between TE's effects on AGS. At concentrations below the threshold of 0.1 mg/L, the effects are considered trivial. In contrast, TE with more than 2.0 mg/L reduces the performance of AGS. In the 6.0 mg/L TE group, COD, TN, and TP removal efficiencies decreased to 72.6–75.5%, 54.6–58.9%, and 71.6–75.8%, respectively. High concentrations of TE reduced sludge concentration and the proportion of organic matter in AGS, leading to a decline in sludge settling performance. Elevated TE concentrations stimulated extracellular polymeric substance secretion, increasing polymeric nitrogen and polymeric phosphorus content. Intracellular polymer analysis revealed that high TE concentrations reduced polyhydroxyalkanoates but enhanced glycogen metabolism. Enzyme activity analysis disclosed that high TE concentrations decreased the activity of key enzymes associated with nutrient removal.","PeriodicalId":505935,"journal":{"name":"Water Science & Technology","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141674329","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

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Water Science & Technology最新文献