Water Practice & Technology最新文献_第10页

Removal of pollutants from landfill leachate by adsorption with nano zero-valent iron particles: adsorption isotherms and kinetic studies 用纳米零价铁颗粒吸附去除垃圾填埋场渗滤液中的污染物：吸附等温线和动力学研究

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.029

S. Göçer, Z. Zaimoğlu, Kevser Cirik

{"title":"Removal of pollutants from landfill leachate by adsorption with nano zero-valent iron particles: adsorption isotherms and kinetic studies","authors":"S. Göçer, Z. Zaimoğlu, Kevser Cirik","doi":"10.2166/wpt.2024.029","DOIUrl":"https://doi.org/10.2166/wpt.2024.029","url":null,"abstract":"\u0000 Nano zero-valent iron (nZVI) is an effective adsorbent for removing various organic and inorganic contaminants. In this study, nZVI particles, synthesized in our previous work, were used for landfill leachate pretreatment. The adsorption performance was tested at various adsorbent concentrations (50–500 mg Fe0/L), pH (3–8), and contact times (15–330 min). Chemical oxygen demand, dissolved organic carbon (DOC), nitrate (NO3-), and ammonium (NH4+) removal efficiency were approximately 75%, 60, 57, and 33%, respectively. The obtained data were fitted well by the Langmuir isotherm and adsorption kinetics of pseudo-second-order equations (R2 > 0.9). The adsorption capacities were found to be 29.62, 21.01, and 3.12 mg/g for DOC, NH4+, and NO3−, respectively, at Fe0 concentration of 50 mg Fe0/L, pH of 8, and contact time of 120 min, which was determined as the effective operational conditions in this work. The obtained removal levels were higher compared to the conventional activated carbon adsorption (72.3%). Results suggest that nZVI has the potential to create effective adsorption relevant to landfill leachate pretreatment, thereby providing more efficient biological treatment by decreasing important pollutants before biological treatment.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"45 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784793","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

Compounding morphometric parameters for prioritization of vulnerable watersheds for land restoration planning in Beas sub basin using geospatial techniques 利用地理空间技术复合形态计量参数，确定易受影响流域的优先次序，以便在比斯河流域进行土地恢复规划

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.028

Sunil Nehra, K. Sur, V. Verma, B. Pateriya

{"title":"Compounding morphometric parameters for prioritization of vulnerable watersheds for land restoration planning in Beas sub basin using geospatial techniques","authors":"Sunil Nehra, K. Sur, V. Verma, B. Pateriya","doi":"10.2166/wpt.2024.028","DOIUrl":"https://doi.org/10.2166/wpt.2024.028","url":null,"abstract":"\u0000 \u0000 The Beas sub basin falling under Indus basin in northern India is experiencing notable changes due to human interventions since the rise of civilization in the Indus valley. The incessant anthropogenic pressure, infrastructural development, deforestation and encroachment have made the sub basin more vulnerable to land degradation, erosion and landslides. Thus this study attempts to classify the watersheds based on morphometric characteristics and prioritize the watersheds for sub basin management as a whole so that restoration process can concentrated on the high risk prone watersheds. In this study ALOS PALSAR DEM of 12.5 meters was used to extract the drainage network, watershed, sub basin and basin boundary complemented by topographic and hydrological maps. The study analyses 49 morphometric parameters under the categories like linear, areal and relief characteristics. The result classifies the erosion capacity of total 4126 streams with the cumulative length of 12,287.51 km over a sub basin area of 19,338.8 Km2. The morphometric parameters were integrated for each watershed and compounded factor was given to rank vulnerability in GIS environment. The results depicted that sub watershed number 2, 6, 12, 16 were high risk prone and underlined as area which requires immediate attention for soil water conservation measure.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"55 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844622","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

Iron, manganese, and lead contamination in groundwater of Bangladesh: a review 孟加拉国地下水中的铁、锰和铅污染：综述

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.030

Md. Zahidul Islam, M. Mostafa

{"title":"Iron, manganese, and lead contamination in groundwater of Bangladesh: a review","authors":"Md. Zahidul Islam, M. Mostafa","doi":"10.2166/wpt.2024.030","DOIUrl":"https://doi.org/10.2166/wpt.2024.030","url":null,"abstract":"\u0000 Groundwater is a vital source of safe drinking water in Bangladesh and most South Asian countries. The study aimed to identify the sources and assess the contamination of Fe, Mn, and Pb in groundwater. The study considered published articles, reports, and data repositories of concerned departments over the past two decades using various search engines, including Web of Science, Scopus, Science Direct, Google Scholar, etc. The study results showed the concentrations of Fe, Mn, and Pb in groundwater exceeded 55.93, 75.44, and 37.50%, respectively, of different standards, including the World Health Organization and United Nations Environmental Protection Agency. The concentrations of Fe, Mn, and Pb ranged from 0.003 to 16.6, 0.00063 to 3.11, and 0.0006 to 3.01 mg/L, respectively, and followed the order Fe > Mn > Pb in the groundwater of Bangladesh. Sources of Fe and Mn in groundwater are mostly geogenic in origin, while Pb contamination in groundwater is anthropogenic and derives from industry dust piles, vehicle exhaust discharge, lead pipes, faucets, fixtures, and batteries. The higher levels of heavy metals in groundwater cause health and environmental hazards. The study recommended that the higher concentrations of Fe, Mn, and Pb in groundwater make it unsuitable for drinking purposes and should be treated before consumption.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"25 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784215","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

Exploring source water mixing strategies to reduce chemical consumption and environmental footprint in surface water treatment 探索源水混合战略，以减少地表水处理过程中的化学品消耗和环境足迹

Water Practice & Technology Pub Date : 2024-02-09 DOI: 10.2166/wpt.2024.025

K. Hägg, Tobias Persson

{"title":"Exploring source water mixing strategies to reduce chemical consumption and environmental footprint in surface water treatment","authors":"K. Hägg, Tobias Persson","doi":"10.2166/wpt.2024.025","DOIUrl":"https://doi.org/10.2166/wpt.2024.025","url":null,"abstract":"\u0000 Common methods for treating surface waters involve chemical flocculation, for which a significant factor contributing to the total cost and climate impact is the consumption of chemicals, chiefly coagulants and pH-adjusting chemicals. The amount of chemicals required for treating surface waters and achieving suitable flocculation pH depends greatly on the alkalinity of the source water. This study investigates the viability of mixing two surface waters with different chemical properties with the aim of reducing the amount of chemicals used during chemical flocculation. Bench-scale experiments were carried out, and the results were compared with full-scale operations at a surface water treatment plant (WTP). The WTP uses ferric chloride as a coagulant, which effectively removes natural organic matter, but consumes large amounts of hydroxide to manage pH before and after flocculation. As an alternative process, this study tested the use of aluminum sulfate, polyaluminum chloride and ferric chloride at varying dosages in combination with different source water mixtures to achieve suitable flocculation pH. The results showed that pH-adjusting chemicals could be omitted by adding a small amount of high alkalinity surface water to the primary source water, thereby reducing costs and climate impact substantially.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"412 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139847621","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

Exploring source water mixing strategies to reduce chemical consumption and environmental footprint in surface water treatment 探索源水混合战略，以减少地表水处理过程中的化学品消耗和环境足迹

Water Practice & Technology Pub Date : 2024-02-09 DOI: 10.2166/wpt.2024.025

K. Hägg, Tobias Persson

{"title":"Exploring source water mixing strategies to reduce chemical consumption and environmental footprint in surface water treatment","authors":"K. Hägg, Tobias Persson","doi":"10.2166/wpt.2024.025","DOIUrl":"https://doi.org/10.2166/wpt.2024.025","url":null,"abstract":"\u0000 Common methods for treating surface waters involve chemical flocculation, for which a significant factor contributing to the total cost and climate impact is the consumption of chemicals, chiefly coagulants and pH-adjusting chemicals. The amount of chemicals required for treating surface waters and achieving suitable flocculation pH depends greatly on the alkalinity of the source water. This study investigates the viability of mixing two surface waters with different chemical properties with the aim of reducing the amount of chemicals used during chemical flocculation. Bench-scale experiments were carried out, and the results were compared with full-scale operations at a surface water treatment plant (WTP). The WTP uses ferric chloride as a coagulant, which effectively removes natural organic matter, but consumes large amounts of hydroxide to manage pH before and after flocculation. As an alternative process, this study tested the use of aluminum sulfate, polyaluminum chloride and ferric chloride at varying dosages in combination with different source water mixtures to achieve suitable flocculation pH. The results showed that pH-adjusting chemicals could be omitted by adding a small amount of high alkalinity surface water to the primary source water, thereby reducing costs and climate impact substantially.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 50","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139788040","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

Variability of time duration analysis for rainfall water using precipitation indexes in Hai town 利用降水指数分析海城降水量的时程变异性

Water Practice & Technology Pub Date : 2024-02-08 DOI: 10.2166/wpt.2024.023

B. Al-humairi, N. Rahal

{"title":"Variability of time duration analysis for rainfall water using precipitation indexes in Hai town","authors":"B. Al-humairi, N. Rahal","doi":"10.2166/wpt.2024.023","DOIUrl":"https://doi.org/10.2166/wpt.2024.023","url":null,"abstract":"\u0000 \u0000 Insufficient rainfall has an impact on a variety of natural resources. This work aims to determine the variability of rainfall and drought in Hai town depending on the standardized rainfall index (SRI), rainfall concentration index (RCI), index of wetness (IW), and coefficient of variation (CV). Rainfall series were taken from the Meteorological Station Directorate of Hai Town, Iraq for a period of 30 years (1989–2018). The results indicated that the years 1996 and 2014 had high SRI and were under extremely wet conditions (IW = 195.93 and 165.93, respectively). However, the lowest SRI value was in 2004, with a wetness index of 35.15, whereas the RCI was strongly irregular in rainfall distribution. Also, the CV was highly variable that ranged between 113.78 and 244.01. Mathematical models were created and confirmed for predicting the wetness index using data-fitting software. Model 1 generated best outcomes (R2 = 99.99%, relative error (RE) = 0.221, root mean square error (RMSE = 0.253) and standard error of estimates (SEE = 0.28). The results demonstrated that rain indicators have significant differences and alteration throughout the study period. Hence, the best model for estimating wetness and droughts in Hai town is recommended.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"175 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139793789","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

Variability of time duration analysis for rainfall water using precipitation indexes in Hai town 利用降水指数分析海城降水量的时程变异性

Water Practice & Technology Pub Date : 2024-02-08 DOI: 10.2166/wpt.2024.023

B. Al-humairi, N. Rahal

{"title":"Variability of time duration analysis for rainfall water using precipitation indexes in Hai town","authors":"B. Al-humairi, N. Rahal","doi":"10.2166/wpt.2024.023","DOIUrl":"https://doi.org/10.2166/wpt.2024.023","url":null,"abstract":"\u0000 \u0000 Insufficient rainfall has an impact on a variety of natural resources. This work aims to determine the variability of rainfall and drought in Hai town depending on the standardized rainfall index (SRI), rainfall concentration index (RCI), index of wetness (IW), and coefficient of variation (CV). Rainfall series were taken from the Meteorological Station Directorate of Hai Town, Iraq for a period of 30 years (1989–2018). The results indicated that the years 1996 and 2014 had high SRI and were under extremely wet conditions (IW = 195.93 and 165.93, respectively). However, the lowest SRI value was in 2004, with a wetness index of 35.15, whereas the RCI was strongly irregular in rainfall distribution. Also, the CV was highly variable that ranged between 113.78 and 244.01. Mathematical models were created and confirmed for predicting the wetness index using data-fitting software. Model 1 generated best outcomes (R2 = 99.99%, relative error (RE) = 0.221, root mean square error (RMSE = 0.253) and standard error of estimates (SEE = 0.28). The results demonstrated that rain indicators have significant differences and alteration throughout the study period. Hence, the best model for estimating wetness and droughts in Hai town is recommended.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"8 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139853796","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

Quantifying water loss in leaky micro-dam reservoir through water balance analysis and high-resolution water level data modeling 通过水平衡分析和高分辨率水位数据建模量化渗漏微型水坝水库的水量损失

Water Practice & Technology Pub Date : 2024-02-06 DOI: 10.2166/wpt.2024.024

G. Berhane, Kristine Walraevens

{"title":"Quantifying water loss in leaky micro-dam reservoir through water balance analysis and high-resolution water level data modeling","authors":"G. Berhane, Kristine Walraevens","doi":"10.2166/wpt.2024.024","DOIUrl":"https://doi.org/10.2166/wpt.2024.024","url":null,"abstract":"\u0000 \u0000 This study aimed to assess the runoff, recharge, and response of a shallow aquifer to leakage from the Arato micro-dam reservoir (MDR). The assessment was conducted using the Soil Conservation Service Curve Number (SCS-CN), soil moisture balance (SMB), and diver (automatic data logger) measurements in both the MDR and a shallow hand-dug well. Recharge was estimated using the chloride mass balance (CMB) and water table fluctuation (WTF) methods. The results revealed that the annual runoff from the catchment was 48.8 mm, which accounted for approximately 0.71 million m3. The yearly groundwater recharge was estimated to be 104, 92.8, and 100 mm using the SMB, CMB, and WTF methods, respectively. Furthermore, the water balance model of the Arato MDR indicated a leakage rate of 13.2 mm/day. It is noteworthy that the estimated leakage exceeded the seepage initially anticipated during the project's design phase (9,965 m3/year). This research project highlights the significance of utilizing local climatic and physical data from the specific watershed under investigation when planning reservoirs and other water resources. It also underscores the importance of conducting thorough site investigations to accurately quantify hydraulic conductivity for leakage estimation purposes.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139799085","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

Quantifying water loss in leaky micro-dam reservoir through water balance analysis and high-resolution water level data modeling 通过水平衡分析和高分辨率水位数据建模量化渗漏微型水坝水库的水量损失

Water Practice & Technology Pub Date : 2024-02-06 DOI: 10.2166/wpt.2024.024

G. Berhane, Kristine Walraevens

{"title":"Quantifying water loss in leaky micro-dam reservoir through water balance analysis and high-resolution water level data modeling","authors":"G. Berhane, Kristine Walraevens","doi":"10.2166/wpt.2024.024","DOIUrl":"https://doi.org/10.2166/wpt.2024.024","url":null,"abstract":"\u0000 \u0000 This study aimed to assess the runoff, recharge, and response of a shallow aquifer to leakage from the Arato micro-dam reservoir (MDR). The assessment was conducted using the Soil Conservation Service Curve Number (SCS-CN), soil moisture balance (SMB), and diver (automatic data logger) measurements in both the MDR and a shallow hand-dug well. Recharge was estimated using the chloride mass balance (CMB) and water table fluctuation (WTF) methods. The results revealed that the annual runoff from the catchment was 48.8 mm, which accounted for approximately 0.71 million m3. The yearly groundwater recharge was estimated to be 104, 92.8, and 100 mm using the SMB, CMB, and WTF methods, respectively. Furthermore, the water balance model of the Arato MDR indicated a leakage rate of 13.2 mm/day. It is noteworthy that the estimated leakage exceeded the seepage initially anticipated during the project's design phase (9,965 m3/year). This research project highlights the significance of utilizing local climatic and physical data from the specific watershed under investigation when planning reservoirs and other water resources. It also underscores the importance of conducting thorough site investigations to accurately quantify hydraulic conductivity for leakage estimation purposes.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"114 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139858706","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 quality indexes and water quality population perception in a rural area in Ecuador 厄瓜多尔农村地区的水质指数和人们对水质的看法

Water Practice & Technology Pub Date : 2024-02-05 DOI: 10.2166/wpt.2024.021

Gloria Roldán-Reascos, C. Pérez-Lamela, Esther de Blas, Jesús Simal-Gándara

{"title":"Water quality indexes and water quality population perception in a rural area in Ecuador","authors":"Gloria Roldán-Reascos, C. Pérez-Lamela, Esther de Blas, Jesús Simal-Gándara","doi":"10.2166/wpt.2024.021","DOIUrl":"https://doi.org/10.2166/wpt.2024.021","url":null,"abstract":"\u0000 \u0000 This studỳs aim was to evaluate the quality of water for human consumption in a rural area of Ecuador. For this purpose, two water quality indexes were used: the Water Quality Index (WQI) and the Simplified Water Quality Index (SWQI). Sampling campaigns were carried out during the years 2018 and 2019, and 18 parameters were analyzed, including pH, conductivity, dissolved oxygen, temperature, color, phosphates, nitrites, nitrates, biochemical oxygen demand, chemical oxygen demand, total suspended solids, turbidity, methylene blue active substances, fats and oils, total coliforms, ammonia, nitrogen, and fecal coliforms. The WQI and the SWQI yielded values between 79.80 and 81.31 (2018) and between 76.99 and 79.89 (2019), respectively. Multivariate statistical methods were applied to implement water management recommendations. The perception of water quality was assessed through a survey of the population. This study contributes to recommending a proposal for the adoption of a WQI in Ecuador. The obtained results indicate that the water in the studied area needs the conventional treatment to achieve adequate quality for human consumption.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139803190","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 Practice & Technology最新文献