Water Science & Technology最新文献_第7页

Coupling of biogas residue biochar and low-magnitude electric fields promotes anaerobic co-digestion of sewage sludge and food waste 沼气残渣生物炭与低强度电场的耦合促进了污水污泥和厨余垃圾的厌氧协同消化

Water Science & Technology Pub Date : 2024-04-12 DOI: 10.2166/wst.2024.120

Hongbo Liu, Peng He, Yang Chen, Xingkang Wang, Ruixiang Zou, Tao Xing, Suyun Xu, Chengyang Wu, Claudia Maurer, Eric Lichtfouse

{"title":"Coupling of biogas residue biochar and low-magnitude electric fields promotes anaerobic co-digestion of sewage sludge and food waste","authors":"Hongbo Liu, Peng He, Yang Chen, Xingkang Wang, Ruixiang Zou, Tao Xing, Suyun Xu, Chengyang Wu, Claudia Maurer, Eric Lichtfouse","doi":"10.2166/wst.2024.120","DOIUrl":"https://doi.org/10.2166/wst.2024.120","url":null,"abstract":"\u0000 \u0000 Biochar-assisted anaerobic digestion (AD) remains constrained due to the inefficient decomposition of complex organics, even with the direct interspecies electron transfer (DIET) pathway. The coupling of electrochemistry with the anaerobic biological treatment could shorten lengthy retention time in co-digestion by improving electron transfer rates and inducing functional microbial acclimation. Thus, this work investigated the potential of improving the performance of AD by coupling low-magnitude electric fields with biochar derived from the anaerobically digested biogas residue. Different voltages (0.3, 0.6, and 0.9 V) were applied at various stages to assess the impact on biochar-assisted AD. The results indicate that an external voltage of 0.3 V, coupled with 5 g/L of biochar, elevates CH4 yield by 45.5% compared to biogas residue biochar alone, and the coupled approach increased biogas production by up to 143% within 10 days. This finding may be partly explained by the enhanced utilization of substrates and the increased amounts of specific methanogens such as Methanobacterium and Methanosarcina. The abundance of the former increased from 4.0 to 11.3%, which enhances the DIET between microorganisms. Furthermore, the coupling method shows better potential for enhancing AD compared to preparing iron-based biochar, and these results present potential avenues for its broader applications.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"119 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140708956","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

Advancement of membrane separation technology for organic pollutant removal 膜分离技术在去除有机污染物方面的进步

Water Science & Technology Pub Date : 2024-04-10 DOI: 10.2166/wst.2024.117

S. Kafle, Sangeet Adhikari, Rakesh Shrestha, Sagar Ban, Gaurav Khatiwada, Pragati Gaire, Nerisha Tuladhar, Guangming Jiang, Ananda Tiwari

{"title":"Advancement of membrane separation technology for organic pollutant removal","authors":"S. Kafle, Sangeet Adhikari, Rakesh Shrestha, Sagar Ban, Gaurav Khatiwada, Pragati Gaire, Nerisha Tuladhar, Guangming Jiang, Ananda Tiwari","doi":"10.2166/wst.2024.117","DOIUrl":"https://doi.org/10.2166/wst.2024.117","url":null,"abstract":"\u0000 \u0000 In the face of growing global freshwater scarcity, the imperative to recycle and reuse water becomes increasingly apparent across industrial, agricultural, and domestic sectors. Eliminating a range of organic pollutants in wastewater, from pesticides to industrial byproducts, presents a formidable challenge. Among the potential solutions, membrane technologies emerge as promising contenders for treating diverse organic contaminants from industrial, agricultural, and household origins. This paper explores cutting-edge membrane-based approaches, including reverse osmosis, nanofiltration, ultrafiltration, microfiltration, gas separation membranes, and pervaporation. Each technology's efficacy in removing distinct organic pollutants while producing purified water is scrutinized. This review delves into membrane fouling, discussing its influencing factors and preventative strategies. It sheds light on the merits, limitations, and prospects of these various membrane techniques, contributing to the advancement of wastewater treatment. It advocates for future research in membrane technology with a focus on fouling control and the development of energy-efficient devices. Interdisciplinary collaboration among researchers, engineers, policymakers, and industry players is vital for shaping water purification innovation. Ongoing research and collaboration position us to fulfill the promise of accessible, clean water for all.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"25 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140716291","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 field study of manhole cover leakage 井盖渗漏实地研究

Water Science & Technology Pub Date : 2024-04-09 DOI: 10.2166/wst.2024.118

Scott Lowe

引用次数: 0

Assessment of rainfall-derived inflow and infiltration in sewer systems with machine learning approaches 利用机器学习方法评估下水道系统中的雨水流入和渗透情况

Water Science & Technology Pub Date : 2024-04-09 DOI: 10.2166/wst.2024.115

Yong Wang, Biao Huang, David Z Zhu

引用次数: 0

Enhanced properties of a positive-charged nanofiltration membrane containing quaternarized chitosan through second interfacial polymerization for the removal of salts and pharmaceuticals 通过二次界面聚合提高含有季铵盐壳聚糖的正电荷纳滤膜去除盐分和药物的性能

Water Science & Technology Pub Date : 2024-04-09 DOI: 10.2166/wst.2024.109

X. Bai, Yuting Lu, Mudan Wang, Xinyang Yu, Zhonghua Huang

{"title":"Enhanced properties of a positive-charged nanofiltration membrane containing quaternarized chitosan through second interfacial polymerization for the removal of salts and pharmaceuticals","authors":"X. Bai, Yuting Lu, Mudan Wang, Xinyang Yu, Zhonghua Huang","doi":"10.2166/wst.2024.109","DOIUrl":"https://doi.org/10.2166/wst.2024.109","url":null,"abstract":"\u0000 \u0000 Nanofiltration (NF) membrane technology has been widely used in the removal of salts and trace organic pollutants, such as pharmaceuticals and personal care products (PPCPs), due to its superiority. A positive-charged composite NF membrane with an active skin layer was prepared by polyethyleneimine (PEI), trimethyl benzene chloride, and quaternate chitosan (HTCC) through second interfacial polymerization on the polyethersulfone ultrafiltration membrane. The physicochemical properties of the nanocomposite membrane were investigated using surface morphology, hydrophilicity, surface charge, and molecular weight cut-off (MWCO). The influence of the concentration and reaction time of PEI and HTCC was documented. The optimized membrane had a MWCO of about 481 Da and possessed a pure water permeability of 25.37 L·m−2·h−1·MPa−1. The results also exhibited salt rejection ability as MgCl2 > CaCl2 > MgSO4 > Na2SO4 > NaCl > KCl, showing a positive charge on the fabricated membrane. In addition, the membrane had higher rejection to atenolol, carbamazepine, amlodipine, and ibuprofen at 89.46, 86.02, 90.12, and 77.21%, respectively. Moreover, the anti-fouling performance and stability of the NF membrane were also improved.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"25 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140722565","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

Comparative analysis of tracer studies in the determination of longitudinal dispersion coefficient 确定纵向弥散系数的示踪研究比较分析

Water Science & Technology Pub Date : 2024-04-08 DOI: 10.2166/wst.2024.116

Chinedu Ukpaka, J. Agunwamba

{"title":"Comparative analysis of tracer studies in the determination of longitudinal dispersion coefficient","authors":"Chinedu Ukpaka, J. Agunwamba","doi":"10.2166/wst.2024.116","DOIUrl":"https://doi.org/10.2166/wst.2024.116","url":null,"abstract":"\u0000 The research presented on this paper is to determine the best tracer studies that will give acceptable estimate of longitudinal dispersion coefficient for Orashi river using Rhodamine WT dye and Sodium chloride as water tracer. Estimated results obtained for longitudinal dispersion coefficient for the case of Rhodamine WT experiment ranges between 71 and 104.4 m2s−1 and while that of Sodium chloride experiment ranges 20.1 and 34.71 m2s−1. These results revealed lower dispersion coefficient using Sodium chloride as water tracer (WT) indicating that for larger rivers, Sodium chloride should not be used as water tracer. The usage of Sodium Chloride as water tracer in the estimation of longitudinal dispersion coefficient is recommended in smaller streams as Nacl is relatively conservative. The established equations for both cases of investigation are proofing satisfactory upon validation as degree of accuracy of 100.0% were obtained using discrepancy ratio , standard error (SE), normal mean error (NME) and mean multiplication error (MME) of the developed equations is better when compared with others existing equations. However, Equation (17) is satisfactorily recommended.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"138 S249","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140731586","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

Research on the purification effect of major pollutants in water by modular constructed wetlands with different filler combinations 采用不同填料组合的模块化建造湿地对水中主要污染物的净化效果研究

Water Science & Technology Pub Date : 2024-04-05 DOI: 10.2166/wst.2024.107

Xiaoting Liu, Xuhao Li, Xiangling Zhang, Hui Zhao, Chen Wang, Hao Zhu, Xinlu Xiao, Shilong Cao, Rang Liu

{"title":"Research on the purification effect of major pollutants in water by modular constructed wetlands with different filler combinations","authors":"Xiaoting Liu, Xuhao Li, Xiangling Zhang, Hui Zhao, Chen Wang, Hao Zhu, Xinlu Xiao, Shilong Cao, Rang Liu","doi":"10.2166/wst.2024.107","DOIUrl":"https://doi.org/10.2166/wst.2024.107","url":null,"abstract":"\u0000 \u0000 Constructed wetland systems have been widely used in China due to their advantages of good treatment effect, low cost and environmental friendliness. However, traditional constructed wetlands have challenges in applications such as deactivation due to filler clogging, difficulty in filler replacement and low adaptability. To address the above problems, this research proposes the use of a modular filler design for constructed wetland based on the concept of assembly construction, which can quickly replace the clogged fillers without destroying the overall structure of the wetland. Four commonly used fillers were selected and applied to the pilot system of the assembled constructed wetland in this study. The goal was to investigate the purification effect of the constructed wetland system with different filler module combinations (CW1, CW2 and CW3) on the simulated wastewater. The results showed that there were significant differences in the removal effects of different filler combinations on different pollutants. The filler combination of CW1 was found to be the best for the removal of NH4+-N. In terms of total phosphorus and chemical oxygen demand, CW2 has the best removal effect. Therefore, the assembled constructed wetland is adjustable and substantially reduces the maintenance cost in the later stage after the filler is clogged, which provides technical guidance for its application in engineering.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738744","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

Removal effect of pollutants from stormwater runoff in shallow bioretention system with gramineous plants 禾本科植物浅层生物滞留系统对雨水径流中污染物的去除效果

Water Science & Technology Pub Date : 2024-04-05 DOI: 10.2166/wst.2024.111

Jing Yang, Hui Luo, Huiteng Wang, Teng Qin, Mingyue Yang, Limi Chen, Xi Wu, Bao-Jie He

{"title":"Removal effect of pollutants from stormwater runoff in shallow bioretention system with gramineous plants","authors":"Jing Yang, Hui Luo, Huiteng Wang, Teng Qin, Mingyue Yang, Limi Chen, Xi Wu, Bao-Jie He","doi":"10.2166/wst.2024.111","DOIUrl":"https://doi.org/10.2166/wst.2024.111","url":null,"abstract":"\u0000 \u0000 The bioretention system is one of the most widely used low impact development (LID) facilities with efficient purification capacity for stormwater, and its planting design has been a hot spot for research at home and abroad. In this paper, ryegrass (Lolium perenne L.), bermuda (Cynodon dactylon Linn.), bahiagrass (Paspalum notatum Flugge), and green grass (Cynodon dactylon × C .transadlensis ‘Tifdwarf’) were chosen as plant species to construct a shallow bioretention system. The growth traits and nutrient absorption ability of four gramineous plants were analyzed. Their tolerance, enrichment, and transportation capacity were also evaluated to compare plant species and their absorptive capacity of heavy metals (Cu, Pb, and Zn). Results showed that the maximum absorption rate (Imax) ranged from 22.1 to 42.4 μg/(g·h) for P and ranged from 65.4 to 104.8 μg/(g·h) for NH4+-N; ryegrass had the strongest absorption capacity for heavy metals and the maximum removal rates of Cu, Pb, and Zn by four grasses were 78.4, 59.4, and 51.3%, respectively; the bioretention cell with ryegrass (3#) was significantly more effective in purifying than the unplanted bioretention cell (1#) during the simulated rainfall test. Overall, the system parameters were optimized to improve the technical application of gramineous plants in the bioretention system.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"23 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140739057","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

An improved method for isotopic and quantitative analysis of dissolved organic carbon in natural water samples 天然水样中溶解有机碳同位素定量分析的改进方法

Water Science & Technology Pub Date : 2024-04-04 DOI: 10.2166/wst.2024.114

Yu-hong Li, Mingshi Wang, Dong Zhang

引用次数: 0

Enhancing hydrological modeling with transformers: a case study for 24-h streamflow prediction 利用变压器加强水文建模：24 小时流量预测案例研究

Water Science & Technology Pub Date : 2024-04-04 DOI: 10.2166/wst.2024.110

B. Demiray, M. Sit, Omer Mermer, Ibrahim Demir

{"title":"Enhancing hydrological modeling with transformers: a case study for 24-h streamflow prediction","authors":"B. Demiray, M. Sit, Omer Mermer, Ibrahim Demir","doi":"10.2166/wst.2024.110","DOIUrl":"https://doi.org/10.2166/wst.2024.110","url":null,"abstract":"\u0000 \u0000 In this paper, we address the critical task of 24-h streamflow forecasting using advanced deep-learning models, with a primary focus on the Transformer architecture which has seen limited application in this specific task. We compare the performance of five different models, including Persistence, long short-term memory (LSTM), Seq2Seq, GRU, and Transformer, across four distinct regions. The evaluation is based on three performance metrics: Nash–Sutcliffe Efficiency (NSE), Pearson's r, and normalized root mean square error (NRMSE). Additionally, we investigate the impact of two data extension methods: zero-padding and persistence, on the model's predictive capabilities. Our findings highlight the Transformer's superiority in capturing complex temporal dependencies and patterns in the streamflow data, outperforming all other models in terms of both accuracy and reliability. Specifically, the Transformer model demonstrated a substantial improvement in NSE scores by up to 20% compared to other models. The study's insights emphasize the significance of leveraging advanced deep learning techniques, such as the Transformer, in hydrological modeling and streamflow forecasting for effective water resource management and flood prediction.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140745471","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

Water Science &amp; Technology最新文献

Water Science & Technology最新文献