Water Science and Technology最新文献_第9页

A combined support vector regression with a firefly algorithm for prediction of energy consumption in wastewater treatment plants. 基于支持向量回归和萤火虫算法的污水处理厂能耗预测。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-15 DOI: 10.2166/wst.2024.375

Mohammed Achite, Saeed Samadianfard, Nehal Elshaboury, Kamel Abderezak Toubal, Eslam Mohammed Abdelkader, Milad Sharafi

{"title":"A combined support vector regression with a firefly algorithm for prediction of energy consumption in wastewater treatment plants.","authors":"Mohammed Achite, Saeed Samadianfard, Nehal Elshaboury, Kamel Abderezak Toubal, Eslam Mohammed Abdelkader, Milad Sharafi","doi":"10.2166/wst.2024.375","DOIUrl":"https://doi.org/10.2166/wst.2024.375","url":null,"abstract":"Wastewater treatment plants (WWTPs) comprise energy-intensive processes, serving as primary contributors to overall WWTP costs. This research study proposes a novel approach that integrates support vector regression (SVR) with the firefly algorithm (FFA) for the prediction of energy consumption in a WWTP in Chlef City, Algeria. The database comprises a comprehensive set of 1,653 samples, capturing diverse information categories. It includes chemical and physical characteristics, encompassing chemical oxygen demand, 5-day biochemical oxygen demand, potential of hydrogen, water temperature, total suspended sediment in water and basin, influent N-NH3 concentration, number of aerators, and operating time. Additionally, the hydraulic and energy-related parameters are represented by the flow entered at the station and the energy consumed by aerators, respectively. Finally, meteorological data, comprising rainfall, temperature, relative humidity, and the aridity index, are part of the dataset required for analysis. In this regard, 15 different models that correspond to 15 different combinations of input parameters are assessed in this study. The results show that the SVR-FFA-15 can render an improvement in the prediction accuracy of energy consumption in WWTPs. This study provides a useful tool for managing the energy consumption of wastewater treatment and makes insightful recommendations for future energy savings.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2747-2763"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751827","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

A novel approach for multivariate time series interval prediction of water quality at wastewater treatment plants. 污水处理厂水质多变量时间序列区间预测的新方法。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-12 DOI: 10.2166/wst.2024.371

Siyu Liu, Zhaocai Wang, Yanyu Li

{"title":"A novel approach for multivariate time series interval prediction of water quality at wastewater treatment plants.","authors":"Siyu Liu, Zhaocai Wang, Yanyu Li","doi":"10.2166/wst.2024.371","DOIUrl":"10.2166/wst.2024.371","url":null,"abstract":"This study proposes a novel approach for predicting variations in water quality at wastewater treatment plants (WWTPs), which is crucial for optimizing process management and pollution control. The model combines convolutional bi-directional gated recursive units (CBGRUs) with adaptive bandwidth kernel function density estimation (ABKDE) to address the challenge of multivariate time series interval prediction of WWTP water quality. Initially, wavelet transform (WT) was employed to smooth the water quality data, reducing noise and fluctuations. Linear correlation coefficient (CC) and non-linear mutual information (MI) techniques were then utilized to select input variables. The CBGRU model was applied to capture temporal correlations in the time series, integrating the Multiple Heads of Attention (MHA) mechanism to enhance the model's ability to comprehend complex relationships within the data. ABKDE was employed, supplemented by bootstrap to establish upper and lower bounds of the prediction intervals. Ablation experiments and comparative analyses with benchmark models confirmed the superior performance of the model in point prediction, interval prediction, the analysis of forecast period, and fluctuation detection for water quality data. Also, this study verifies the model's broad applicability and robustness to anomalous data. This study contributes significantly to improved effluent treatment efficiency and water quality control in WWTPs.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2813-2841"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751832","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

Composition and concentrations of microplastics including tyre wear particles in stormwater retention pond sediments. 雨水截留池沉积物中包括轮胎磨损颗粒在内的微塑料的组成和浓度。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-08 DOI: 10.2166/wst.2024.368

Lisa Öborn, Heléne Österlund, Claudia Lorenz, Alvise Vianello, Jeanette Lykkemark, Jes Vollertsen, Maria Viklander

{"title":"Composition and concentrations of microplastics including tyre wear particles in stormwater retention pond sediments.","authors":"Lisa Öborn, Heléne Österlund, Claudia Lorenz, Alvise Vianello, Jeanette Lykkemark, Jes Vollertsen, Maria Viklander","doi":"10.2166/wst.2024.368","DOIUrl":"https://doi.org/10.2166/wst.2024.368","url":null,"abstract":"Stormwater is recognised as a vector for microplastics (MPs), including tyre wear particles (TWPs) from land-based sources to receiving waterbodies. Before reaching the waterbodies, the stormwater may be treated. In this study, sediments from six treatment facilities (five retention ponds and a subsurface sedimentation tank) were analysed to understand MP occurrence, concentrations, sizes, polymer types and distribution between inlet and outlet. The concentrations of MPs showed large variations between and within different facilities with MP concentrations of 1,440-72,209 items/kg (analysed by μFTIR) corresponding to 120-2,950 μg/kg and TWP concentrations from <DL up to 69,300 μg/kg (analysed by pyrolysis-GC-MS), with significantly higher concentrations at the inlet compared to the outlet. Polypropylene (PP) was the predominant MP type in terms of number in all samples. TWPs were dominant by mass in most (nine) samples. The relatively low density of PP polymers implies that density might not be the sole factor influencing particle settlement behaviour. Small particles occurred more frequently than large ones; around 70% of the particles detected in the samples were 100 μm or smaller. In summary, this study highlights the occurrence of MPs, including TWPs, in stormwater facilities and demonstrates variations in concentrations depending on sites and locations within the facility.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2857-2869"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751838","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

Flocculation of Micractinium reisseri for successful harvesting and potential use. 成功收获和潜在利用的微锕絮凝剂。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-15 DOI: 10.2166/wst.2024.374

Sudha Sahay, Brigita Jain, Dharmisha Solanki, Shailesh Dave, Antony Suresh

{"title":"Flocculation of Micractinium reisseri for successful harvesting and potential use.","authors":"Sudha Sahay, Brigita Jain, Dharmisha Solanki, Shailesh Dave, Antony Suresh","doi":"10.2166/wst.2024.374","DOIUrl":"https://doi.org/10.2166/wst.2024.374","url":null,"abstract":"This study includes Micractinium reisseri cultivation in artificial saline medium (ASM). With the aim of harvesting the bulk M. reisseri biomass, an experiment was set up at a bench scale to evaluate the best flocculation technique with the least compromising biomass and lipid loss. The flocculation efficiencies for the M. reisseri biomass have been studied using the auto-, bio-, and chemical-flocculation methods. Different concentrations of chitosan for the biological method and alum for the chemical method were added in M. reisseri culture growing in the liquid ASM. The optimal concentration with the highest biomass and oil collection was determined for each method. In the biological method, the highest (96.44%) and lowest (67.88%) flocculation efficiencies were observed by adding 15 and 2 mg of chitosan, respectively, and in the chemical method, the highest (97.2%) and lowest (35.4%) flocculation efficiencies were observed by adding 150 and 50 mg of alum, respectively. The auto-flocculation method shows the highest efficiency (97.8%) among all the tests. The oil yield from the three highest biomasses was 2.60, 1.51, and 1.08% in the auto-, bio-, and chemical-flocculation methods, respectively. The time taken for auto-, bio-, and chemical-flocculation was 48, 4, and 1 h, respectively.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2934-2946"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751775","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

Decision support tools for water reuse: a systematic review. 水再利用的决策支持工具：系统回顾。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-09 DOI: 10.2166/wst.2024.361

Vanda Sampaio, Ana Silvia Pereira Santos, Maria Manuela Lima

{"title":"Decision support tools for water reuse: a systematic review.","authors":"Vanda Sampaio, Ana Silvia Pereira Santos, Maria Manuela Lima","doi":"10.2166/wst.2024.361","DOIUrl":"10.2166/wst.2024.361","url":null,"abstract":"This article provides a comprehensive review of decision support tools for water reuse (DST4WR), focusing on microbiological risk assessment (MRA), life cycle analysis (LCA), life cycle cost (LCC), and multi-criteria decision analysis (MCDA). A systematic review of 35 articles published between 2020 and 2024, plus one from 2019, was conducted. The studies were categorised based on the DST4WR applied, with each tool discussed individually. MRA tools assess public health risks in different case studies. LCA identifies key environmental indicators, and its integration with LCC facilitates comprehensive cost analysis. MCDA, applied in various case studies, uses criteria like environmental, social, economic, technical, public health, and functional aspects. Integrating DST4WR tools identifies synergies and trade-offs between criteria, aiding informed decision-making. Combining MRA, LCA/LCC, and MCDA is especially beneficial, as each tool provides a distinct perspective. Using these tools together offers a holistic view of water reuse management, ensuring that all relevant factors are balanced. This approach enhances decision-making and builds stakeholder confidence and acceptance by transparently addressing public health, environmental, economic, and social concerns.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2713-2733"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751772","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

Effects of copper and lead on the sorption and desorption behaviors of benzene onto humic acids and black carbons. 铜和铅对苯在腐植酸和黑碳上吸附和解吸行为的影响。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-12 DOI: 10.2166/wst.2024.372

Zhi Tang, Sen Yang, Yilian Li, Juan Du, Yangfu Xiong, Shengbo Fu

{"title":"Effects of copper and lead on the sorption and desorption behaviors of benzene onto humic acids and black carbons.","authors":"Zhi Tang, Sen Yang, Yilian Li, Juan Du, Yangfu Xiong, Shengbo Fu","doi":"10.2166/wst.2024.372","DOIUrl":"https://doi.org/10.2166/wst.2024.372","url":null,"abstract":"Due to rapid urbanization and industrialization, combined pollution caused by BTEX (benzene, toluene, ethylbenzene, and xylene) and heavy metals has become ubiquitous in soils, which would pose serious health risks to humans. However, the effects of heavy metals on the sorption and desorption behaviors of BTEX have not been fully elucidated. In this study, the effects of Cu2+ and Pb2+ ions on the sorption and desorption of benzene onto humic acids and black carbons were investigated. The results showed that Cu2+ and Pb2+ ions significantly reduced the sorption capacity, slowed down the sorption rate, and made the desorption less hysteretic of benzene on both humic acids and black carbons. Furthermore, the inhibitory effects by Pb2+ were significantly stronger than those of Cu2+. By combining the results of Fourier transform infrared spectroscopy and the site energy distribution model, it can be speculated that the hydration shells of Cu2+ and Pb2+ ions partially cover the surface of humic acids and black carbons, blocking their micropores and shielding sorption sites, consequently inhibiting the sorption of benzene. This study highlights that coexisting metal cations can significantly influence the fate of BTEX in soils.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2947-2960"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751774","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

Comparative life cycle assessment of on-site sanitation systems using lagoons or drying beds for fecal sludge treatment in low-income tropical countries. 在低收入热带国家使用泻湖或干燥床进行粪便污泥处理的现场卫生系统的比较生命周期评估。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.2166/wst.2024.377

Davidson Jean-Baptiste, Frédéric Monette

{"title":"Comparative life cycle assessment of on-site sanitation systems using lagoons or drying beds for fecal sludge treatment in low-income tropical countries.","authors":"Davidson Jean-Baptiste, Frédéric Monette","doi":"10.2166/wst.2024.377","DOIUrl":"10.2166/wst.2024.377","url":null,"abstract":"Environmental challenges in low-income countries, such as Haiti, persist due to inadequate sanitation infrastructure. This study assesses the environmental impacts of nine on-site sanitation systems to identify those with the least environmental impacts and explore improvement options. Nine scenarios were developed, each representing different systems for managing 1 ton of fecal sludge over 1 year. The 'Impact World + ' and 'IPCC 2013 GWP 100a' methods evaluated impacts on ecosystems, human health, and climate change. Data sources included interviews, weighing records, and scientific publications. Results show that Scenario 8 (Flush Toilet - Evacuation - Planted Drying Beds) is most impactful on health (1.17 × 10-2 DALY), while Scenario 1 (Composting Toilet - Evacuation - Unplanted Drying Beds) is least impactful (1.77 × 10-3 DALY). For ecosystem impacts, Scenario 2 (Container-based Toilet - Evacuation - Planted Drying Beds) is most impactful (3.81 × 103 PDF·m2·year), while Scenario 6 (VIP latrine - Evacuation - Lagoons) is least impactful (3.52 × 103 PDF·m2·year). Key hotspots include toilet paper, wood shavings, GHG emissions, and water use. The study recommends an integrated approach combining environmental life cycle assessment (LCA) with life cycle cost assessment and social LCA for sustainable decision-making on sanitation systems in low-income countries.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 10","pages":"2842-2856"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751834","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

Sewage sludge management and enhanced energy recovery using anaerobic digestion: an insight. 利用厌氧消化进行污水污泥管理和强化能源回收：一种见解。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI: 10.2166/wst.2024.269

Vinay Pratap, Sunil Kumar, Bholu Ram Yadav

引用次数: 0

Optimized wastewater management utilizing multivariate statistical analysis: a case study of the Mascara wastewater treatment plant, Algeria. 利用多元统计分析优化废水管理：阿尔及利亚 Mascara 废水处理厂案例研究。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-12 DOI: 10.2166/wst.2024.276

Imène Benstaali, Amel Talia, Laouni Benadela

{"title":"Optimized wastewater management utilizing multivariate statistical analysis: a case study of the Mascara wastewater treatment plant, Algeria.","authors":"Imène Benstaali, Amel Talia, Laouni Benadela","doi":"10.2166/wst.2024.276","DOIUrl":"https://doi.org/10.2166/wst.2024.276","url":null,"abstract":"Effective wastewater management is crucial in regions experiencing water scarcity and environmental stressors, such as pollution and climate change. Optimizing treatment processes is essential for achieving environmental sustainability. This study aims to highlight the importance of effective wastewater management strategies, particularly in regions facing water scarcity. Our objective was to identify key factors influencing the treatment process. Therefore, we evaluated associations between physicochemical parameters using multivariate statistical methods, including Principal Component Analysis (PCA) and Hierarchical Ascendant Classification (HAC). Our findings categorize the monthly water samples into three distinct groups based on levels of organic pollution: the first group (July, August, and September) is characterized by high oxygenation levels and significantly low organic pollution, indicating optimal system operation. The second group (April, October, November, and December) exhibits low oxygenation and low organic pollution, promoting sludge settling and pollutant reduction. The third group (January, February, March, May, and June) shows significantly high organic pollution and low oxygenation, which corresponds to unfavorable environmental conditions. Our study demonstrates the effectiveness of multivariate statistical methods in optimizing wastewater treatment processes, providing crucial insights for environmental sustainability and water resource management.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1290-1305"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112609","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

Wetland systems for water pollution control. 用于水污染控制的湿地系统。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 DOI: 10.2166/wst.2024.245

Jaime Nivala, Pedro N Carvalho, Remy Gourdon, Mathieu Gautier, Pascal Molle, Florent Chazarenc

引用次数: 0