Water Science and Technology最新文献_第7页

Evaluation of hydraulic retention time on hydrogen production from corn industry wastewater by dark fermentation. 玉米工业废水暗发酵产氢的水力停留时间评价。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-02-01 Epub Date: 2025-01-21 DOI: 10.2166/wst.2025.009

Monserrat Vázquez-López, Rosalinda Campuzano, Daniel De Los Cobos-Vasconcelos, Ivan Moreno-Andrade

引用次数: 0

Determining the molecular diffusion coefficient of naphthenic acid in water as a heavy oil pollutant by experimental method. 用实验方法测定重油污染物环烷酸在水中的分子扩散系数。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-02-01 Epub Date: 2025-02-04 DOI: 10.2166/wst.2025.013

Yaser Sotoudeh, Mohammad Hossein Niksokhan, Abdolreza Karbassi, Majid Baghdadi

{"title":"Determining the molecular diffusion coefficient of naphthenic acid in water as a heavy oil pollutant by experimental method.","authors":"Yaser Sotoudeh, Mohammad Hossein Niksokhan, Abdolreza Karbassi, Majid Baghdadi","doi":"10.2166/wst.2025.013","DOIUrl":"10.2166/wst.2025.013","url":null,"abstract":"Naphthenic acids are the most significant environmental pollutants created by the extraction of oil from oil sand deposits. Since the diffusion coefficient of naphthenic acid has a direct effect on the modeling of diffusion and advection and determining its behavior and movement in water, this number is needed for modeling work and future studies. In this study, the diffusion coefficient of this substance in water was determined experimentally and in a laboratory. The researchers used the device of the Armfield company, known as the device for determining the diffusion coefficient in liquids. In this research, after examining different methods of determining the concentration of naphthenic acid in the water, including UV-vis, chemical oxygen demand (COD), crystal violet, oxidation reduction potential, pH meter, and electrical conductivity meter, the COD method was the best method in determining the concentration at different times, which provided a suitable numerical range for the concentrations and a device was built for heavy oil pollutants with poor solubility in water to specify the diffusion coefficient, and for the first time, the diffusion coefficient of naphthenic acid in water was obtained with experiments and experimental equations as 0.69 × 10-9 m2/s which indicates the weak diffusion of this substance in water.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 4","pages":"413-423"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524727","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

Symmetry to asymmetry: innovative evolvement of a gas-liquid-solid (GLS) separator in UASB/EGSB reactors on a new perspective. 从对称到不对称：从新的角度看UASB/EGSB反应器中气液固（GLS）分离器的创新演变。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-02-01 Epub Date: 2025-02-07 DOI: 10.2166/wst.2025.018

Feilin Hao, Mingwei Shen

{"title":"Symmetry to asymmetry: innovative evolvement of a gas-liquid-solid (GLS) separator in UASB/EGSB reactors on a new perspective.","authors":"Feilin Hao, Mingwei Shen","doi":"10.2166/wst.2025.018","DOIUrl":"10.2166/wst.2025.018","url":null,"abstract":"The transition from up-flow anaerobic sludge blanket (UASB) reactors to expanded granular sludge bed (EGSB) reactors presents challenges for traditional symmetric critical gas-liquid-solid (GLS) separators, including high spatial occupation, fluid-energy consumption, and reduced separation efficiency. This study introduced a novel GLS separation mechanism based on vortex circulation-induced deposition, agglomeration, and flowback of solid separation. Leveraging this mechanism, an innovative asymmetrical laboratory-scale GLS separator was developed and tested with both granular and flocculent sludge. The new prototype demonstrates superior solid separation performance, achieving 98.3% for granular sludge and 96.0% for flocculent sludge. It features a simple structure and optimized flow paths, resulting in approximately 30% reduction in height and 14.8% less material consumption compared to existing models. Flocculent sludge shows greater sensitivity to operational factors than granular sludge, with higher sludge concentration and smaller fragment size being preferable for high separation efficiency. This mechanism is validated by experimental observations and computational fluid dynamics (CFD) simulations, providing a new perspective on GLS separation and establishing the new model as a promising candidate for UASB/EGSB bio-reactors.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 4","pages":"400-412"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524730","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

Development of a process model and life cycle assessment for a large water resource recovery facility and comparison of biosolids process upgrade options. 为一个大型水资源回收设施开发工艺模型和生命周期评估，并比较生物固体工艺升级方案。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-02-01 Epub Date: 2025-01-21 DOI: 10.2166/wst.2025.008

Daehyun Ko, John W Norton, Glen T Daigger

{"title":"Development of a process model and life cycle assessment for a large water resource recovery facility and comparison of biosolids process upgrade options.","authors":"Daehyun Ko, John W Norton, Glen T Daigger","doi":"10.2166/wst.2025.008","DOIUrl":"10.2166/wst.2025.008","url":null,"abstract":"Life cycle assessment (LCA), coupled with process modeling to develop the life cycle inventory, is a valuable tool to assess differences in environmental performance when evaluating alternatives based on sustainability (triple-bottom-line) principles. Coupled with a whole plant process model (SUMO21), an LCA assessed the environmental performance of options to upgrade biosolids management for the Great Lakes Water Authority water resource recovery facility. All five alternatives evaluated (composting plus four anaerobic digestion alternatives) were able to meet the core objectives of the biosolids management system upgrade: (1) address ageing incinerators, (2) minimize the mass of biosolids landfilled, and (3) reduce greenhouse gas emissions, compared to the existing (baseline) system. The mass of solids to be managed was reduced for the anaerobic digestion alternatives but not for the composting alternatives. Environmental impacts were reduced for the composting alternative for all six impact categories considered (global warming, eutrophication, carcinogenics, ecotoxicity, respiratory effects, and fossil fuel depletion) relative to the baseline, and further reduced for all four anaerobic digestion alternatives evaluated. The results allowed a phased implementation plan to be developed, which could be evaluated based on other factors, such as costs and operational factors.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 3","pages":"295-310"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143415440","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

Discharge performance of side gates with different shapes. 不同形状侧门的卸料性能。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-02-01 Epub Date: 2025-02-10 DOI: 10.2166/wst.2025.019

Veysi Kartal, M Emin Emiroglu, M Fatih Yuksel

{"title":"Discharge performance of side gates with different shapes.","authors":"Veysi Kartal, M Emin Emiroglu, M Fatih Yuksel","doi":"10.2166/wst.2025.019","DOIUrl":"10.2166/wst.2025.019","url":null,"abstract":"Flow measurement and water level control in open channels are vital to water management. Lateral intake structures are commonly used for different purposes in civil and environmental engineering applications. Flow characteristics of rectangular, triangular, and semi-circular shapes were experimentally investigated using 357 runs under subcritical flow conditions. Correlation analysis was conducted to determine the effect of various parameters on the discharge coefficient. Upstream Froude number (F1), the ratio of the gate opening to the upstream flow depth, and the gate length to flow depth ratio are influential for all side gates. However, the ratio of the gate opening to the gate length is also influential for triangular side gates. Discharge coefficient of the semi-circular side gate is relatively higher than that of the other tested gates within the range of 0.05<F1<0.40; the discharge coefficient of the triangular side gate is relatively higher than that of the other shaped gates for 0.40<F1<0.98 and the efficiency of the triangular side gate decreases more than that of the other gates as the downstream Froude number value increases. A reliable equation for side gates was developed. Good agreements were obtained between the proposed equations and the experimental data.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 4","pages":"344-362"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524728","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

Cost-effective evaluation of modified ochre soil and its combination with cationic polyacrylamide for municipal wastewater sludge conditioning. 改性赭石土及其与阳离子聚丙烯酰胺复合处理城市污水污泥的经济性评价。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-01-01 Epub Date: 2025-01-11 DOI: 10.2166/wst.2025.005

Behzad Aghababaei, Masoud Taheriyoun, Rana Mahdavi Far

{"title":"Cost-effective evaluation of modified ochre soil and its combination with cationic polyacrylamide for municipal wastewater sludge conditioning.","authors":"Behzad Aghababaei, Masoud Taheriyoun, Rana Mahdavi Far","doi":"10.2166/wst.2025.005","DOIUrl":"10.2166/wst.2025.005","url":null,"abstract":"One of the most costly stages of activated sludge wastewater treatment plants is the treatment and dewatering of waste sludge. Chemical conditioning of sludge, as one of the most widespread methods to enhance sludge dewaterability, accounts for a significant portion of operational expenses due to the consumption of expensive polymeric compounds. This research aims to assess the cost-effectiveness of ochre soil, modified with hydrochloric acid, as an affordable mineral for conditioning waste sludge in an activated sludge system. The optimal conditions for acid modifications are obtained using response surface methodology. Then, its performance is compared with conventional coagulants (ferric chloride and alum) and in combination with cationic polyacrylamide (CPAM). To assess the conditioning process efficiency, the specific resistance to filtration (SRF) parameter was employed. At an optimal dose of modified ochre soil (MOS) equal to 300 (mg/g dry solids), the SRF value decreased from 31.96 to 2.7 Tm/kg. The combination of 100 (mg/gDS) MOS with 0.5 (mg/gDS) CPAM showed as the most cost-effective among the coagulants tested, with a 31% greater SRF reduction compared to CPAM used alone. This study shows the practical efficacy of an eco-friendly natural mineral as a polymer alternative, with the potential for sludge dewatering.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 2","pages":"174-191"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143067696","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 magnetotactic bacteria (MTB) on membrane fouling control in an ultrafiltration treatment of chromium-containing surface water. 趋磁细菌（MTB）对含铬地表水超滤处理膜污染控制的影响。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-01-01 Epub Date: 2024-12-18 DOI: 10.2166/wst.2024.400

Shuailiang Lu, Guicai Liu, Yingjie Dou, Zhengzhou Zhang, Zhiyong Zhou, Kang Xie

{"title":"Effects of magnetotactic bacteria (MTB) on membrane fouling control in an ultrafiltration treatment of chromium-containing surface water.","authors":"Shuailiang Lu, Guicai Liu, Yingjie Dou, Zhengzhou Zhang, Zhiyong Zhou, Kang Xie","doi":"10.2166/wst.2024.400","DOIUrl":"10.2166/wst.2024.400","url":null,"abstract":"Ultrafiltration membranes are widely used in the treatment of surface water. However, membrane fouling is a core issue that needs to be addressed in its application. Magnetotactic bacteria (MTB) show early film-forming and magnetotactic behaviour in the presence of external magnetic fields. The objective of this study was to alleviate membrane fouling in ultrafiltration membranes using MTB, which can prioritise film formation and show directional movement under external magnetic fields. The concentration of Cr6+ in the water was 10 mg/L, and the dosage of MTB was 10 mg/L. Results show that the transmembrane pressure of the ultrafiltration membrane decreased by 5 kPa following the application of a magnetic field of 33.71 mT for a period of 90 min, and the membrane fouling could therefore be effectively controlled. With the addition of MTB, the average removal of Cr6+ from water by the ultrafiltration system was 20.10%, which was 14.56% higher than that of the conventional ultrafiltration system. The average removal of chromaticity was 20.13%, which was 10% higher than that achieved by the conventional ultrafiltration system. Furthermore, MTB progressively developed into the predominant flora during the operational phase, thereby enhancing the efficiency of the ultrafiltration system.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 1","pages":"40-55"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143012615","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

Performance evaluation of the amperometric total residual oxidant sensor with the electrochlorination-based Ballast Water Management System. 电氯化压载水管理系统中安培总残余氧化剂传感器的性能评价。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.2166/wst.2025.006

Xunzhou Li, Jinjin Song, Fengqi Xu, Ying Li, Tingyong Wang, Zhilei Wang, Wei Liu, Chao Li

{"title":"Performance evaluation of the amperometric total residual oxidant sensor with the electrochlorination-based Ballast Water Management System.","authors":"Xunzhou Li, Jinjin Song, Fengqi Xu, Ying Li, Tingyong Wang, Zhilei Wang, Wei Liu, Chao Li","doi":"10.2166/wst.2025.006","DOIUrl":"10.2166/wst.2025.006","url":null,"abstract":"Nowadays, performance studies on the amperometric total residual oxidant (TRO) sensor are only in the bench test stage and have not been conducted under specific maritime conditions with Ballast Water Management System (BWMS). In this study, the application of the amperometric TRO sensor in land-based biological efficacy (BE) testing, operation and maintenance (O&M) testing, as well as shipboard (SB) testing, was explored by comparing with the existing di-phenylene-diamine (DPD) TRO sensor. The results showed that the average TRO measurement deviation between the amperometric sensor and the DPD sensor was within ±10% in valid BE test cycles and the O&M testing exceeding 47 operating hours. The TRO value measured by amperometric sensor exhibited significant fluctuations, but the improved control logic could achieve smoothing out the fluctuation, with stability comparable to or even higher than that of the DPD sensor. The practicality and reliability of the amperometric sensor in electrochlorination-based BWMS were further verified through SB testing.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 2","pages":"192-201"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143068098","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

Systematic bibliographic analysis of heavy metal remediation. 重金属修复的系统文献分析。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-01-01 Epub Date: 2024-12-09 DOI: 10.2166/wst.2024.396

Shan Chen, Yuanzhao Ding

{"title":"Systematic bibliographic analysis of heavy metal remediation.","authors":"Shan Chen, Yuanzhao Ding","doi":"10.2166/wst.2024.396","DOIUrl":"10.2166/wst.2024.396","url":null,"abstract":"Heavy metals pose a significant threat to human health, with contaminated water sources linked to severe conditions, including gastric cancer. Consequently, the effective remediation of heavy metals is crucial. This study employs a bibliographic analysis to examine key methodologies, leading organizations, and prominent countries involved in heavy metal remediation. By systematically reviewing around 1,000 records, the paper identifies the most critical remediation techniques and provides a comprehensive overview of current practices in the field. Additionally, the study explores prospects, emphasizing the potential of emerging technologies such as big data and machine learning to enhance remediation efforts. It highlights recent advancements, identifies significant trends, such as the growing use of bioremediation and nanotechnology, and addresses critical challenges in the remediation landscape, including regulatory hurdles and technological limitations. By making stronger connections between the identified trends and their implications for future research, this comprehensive analysis aims to provide valuable insights and guide the development of improved strategies for mitigating the impact of heavy metal contamination, ultimately safeguarding public health.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 1","pages":"56-68"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143012625","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

Wastewater biotreatment and bioaugmentation for remediation of contaminated sites at an oil recycling plant. 石油回收厂污水生物处理和生物强化修复污染场地。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2025-01-01 Epub Date: 2024-11-05 DOI: 10.2166/wst.2024.364

Meryem Jemli, Fatma Karray, Lamjed Mansour, Slim Loukil, Rihab Bouhdida, Krishna Kumar Yadav, Sami Sayadi

{"title":"Wastewater biotreatment and bioaugmentation for remediation of contaminated sites at an oil recycling plant.","authors":"Meryem Jemli, Fatma Karray, Lamjed Mansour, Slim Loukil, Rihab Bouhdida, Krishna Kumar Yadav, Sami Sayadi","doi":"10.2166/wst.2024.364","DOIUrl":"10.2166/wst.2024.364","url":null,"abstract":"This work focused on the biotreatment of wastewater and contaminated soil in a used oil recycling plant located in Bizerte. A continuous stirred tank reactor (CSTR) and a trickling filter (TF) were used to treat stripped and collected wastewater, respectively. The CSTR was started up and stabilized for 90 days. Over the following 170 days, the operational organic loading rates of the TF and the CSTR were around 1,200 and 3,000 g chemical oxygen demand (COD) m-3 day-1, respectively. The treatment efficiency was 94% for total petroleum hydrocarbons (TPHs), 89.5% for COD, 83.34% for biological oxygen demand (BOD5), and 91.25% for phenol. Treated industrial wastewater from the TF was used for bioaugmentation (BA) of contaminated soil. The assessment of the soil took 24 weeks to complete. The effectiveness of the soil BA strategy was confirmed by monitoring phenolic compounds, aliphatic and polycyclic aromatic hydrocarbons, heavy metals, and germination index. The biodegradation rate of contaminants was improved and the time required for their removal was reduced. The soil bacterial communities were dominated by species of the genera Mycobacterium, Proteiniphilum, Nocardioides, Luteimicrobium, and Azospirillum, which were identified as hydrocarbon and phenol-degrading bacteria.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"91 2","pages":"139-159"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143068102","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