Water Practice & Technology最新文献_第7页

Distribution and transfer of organics in the coagulation–anaerobic hydrolysis–aerobic treatment process of cutting fluid wastewaters 切削液废水混凝-厌氧水解-厌氧处理过程中有机物的分布和转移

Water Practice & Technology Pub Date : 2024-04-20 DOI: 10.2166/wpt.2024.099

Ru Yue Zhang, Jingjie Yu, Zhuo Ran Han, Zhi Rui Wang, Shao-po Wang

{"title":"Distribution and transfer of organics in the coagulation–anaerobic hydrolysis–aerobic treatment process of cutting fluid wastewaters","authors":"Ru Yue Zhang, Jingjie Yu, Zhuo Ran Han, Zhi Rui Wang, Shao-po Wang","doi":"10.2166/wpt.2024.099","DOIUrl":"https://doi.org/10.2166/wpt.2024.099","url":null,"abstract":"\u0000 \u0000 Two kinds of real cutting fluid wastewater samples (i.e., sample A and sample B) and two kinds of coagulants (i.e., polymeric aluminum chloride (PAC) and polymeric iron sulfate (PFS)) were studied during coagulation experiment, and the coagulation effluent of sample B with PAC was utilized for subsequent anaerobic hydrolysis–aerobic treatment, and the molecular weight (MW) distribution and ultraviolet (UV) absorption spectroscopy were used to explore the distribution and transfer of organics of each treatment unit. The results showed that sample A and sample B both mainly contained macromolecular organics with MW > 100 kDa and small molecule organics with MW < 3 kDa, and PAC had significant coagulation performance for organics with MW > 100 kDa in both samples, while neither PAC nor PFS achieved good coagulation performance for the small molecule organics with MW < 3 kDa in both samples. It could be inferred by UV spectra that the coagulation effluent of sample A and B might both contain organics with conjugated double bonds, monocyclic aromatic hydrocarbons, and the coagulation effluent of sample B might also contain polycyclic aromatic hydrocarbons and heterocyclic compounds with low MW. MW distribution analysis and the UV spectra results showed that biological treatment could further remove organics with conjugated double bonds and aromatic compounds with MW < 3 kDa.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"113 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140680817","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

Relationship between monthly surface water derived from Sentinel-2 imagery and meteorological data (precipitation and evaporation) at Baghdad, Iraq 从哨兵-2 图像得出的伊拉克巴格达每月地表水与气象数据（降水量和蒸发量）之间的关系

Water Practice & Technology Pub Date : 2024-04-20 DOI: 10.2166/wpt.2024.098

Zahraa S. Mahdi, Yasmin Q. Tawfeek, M. Al-Jiboori

{"title":"Relationship between monthly surface water derived from Sentinel-2 imagery and meteorological data (precipitation and evaporation) at Baghdad, Iraq","authors":"Zahraa S. Mahdi, Yasmin Q. Tawfeek, M. Al-Jiboori","doi":"10.2166/wpt.2024.098","DOIUrl":"https://doi.org/10.2166/wpt.2024.098","url":null,"abstract":"\u0000 \u0000 This study was carried out using two main monthly datasets: satellite images and some meteorological parameters (like precipitation and evaporation) for 2 years (2018 and 2021). Using the fine spatial resolution images acquired from Sentinel-2, digital maps of surface water areas were produced by calculating the Modified Normalized Difference Water Index for all months in QGIS and then classifying them into two main categories (water and non-water bodies). The results show that the largest areas were in January 2021 (77.2 km2) and 40.7 km2 in November 2018, while the lowest (18.7 km2) were in June 2021 and July 2018. Monthly mean values of cumulative precipitation and evaporation were used to find their relationships with surface water areas. The results show that the year 2021 was a severe dry year, whereas the lowest precipitation (25 mm) in that year was associated with higher evaporation losses (3,021.8 mm) during this year. When combined with surface water areas and meteorological parameters, a non-linear relationship between water areas and evaporation was found for both years, and a linear relationship between precipitation and water areas for the wet year of 2018.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"120 51","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140679415","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

Groundwater flow simulation for artificial recharge: a GIS, remote sensing, and MODFLOW integration 人工补给的地下水流模拟：地理信息系统、遥感和 MODFLOW 的集成

Water Practice & Technology Pub Date : 2024-04-20 DOI: 10.2166/wpt.2024.100

Sanchita Nawale, Meenal Mategaonkar

{"title":"Groundwater flow simulation for artificial recharge: a GIS, remote sensing, and MODFLOW integration","authors":"Sanchita Nawale, Meenal Mategaonkar","doi":"10.2166/wpt.2024.100","DOIUrl":"https://doi.org/10.2166/wpt.2024.100","url":null,"abstract":"\u0000 Groundwater (GW) emerges as a sustainable resource to meet water demand, yet current GW reservoirs fall short of projected population needs. Artificial GW recharge, bolstered by Geographical Information System (GIS) and Remote Sensing (RS) technologies, stands out as a pivotal solution. Examining Aurangabad district in Maharashtra, India the study uncovers distinct challenges: Aurangabad faces escalating water demand due to population growth, leading to GW over-exploitation. Leveraging hydrogeological parameters, rainfall analysis, and GW availability, the study proposes tailored GW recharge techniques. Utilizing MODFLOW simulation, the study explores diverse recharge rates and existing GW availability, showcasing promising results. Integration of stream augmentation, bladder pillow tank methods, and dug well recharge is examined via GIS and RS techniques. Simulation outcomes project significant GW level increases (11.55–23.70 m) with varying recharge rates, effectively meeting region-specific water demand projections. The findings underscore the imperative of sustainable water management practices and technological advancements in addressing water scarcity crises.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"101 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140680164","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

Examining the spatial and temporal vulnerability to drought in Odisha, India 考察印度奥迪沙地区在空间和时间上对干旱的脆弱性

Water Practice & Technology Pub Date : 2024-04-18 DOI: 10.2166/wpt.2024.097

Prakhar Modi, Kriti Kiran Majhi, Abhilash Gogineni

{"title":"Examining the spatial and temporal vulnerability to drought in Odisha, India","authors":"Prakhar Modi, Kriti Kiran Majhi, Abhilash Gogineni","doi":"10.2166/wpt.2024.097","DOIUrl":"https://doi.org/10.2166/wpt.2024.097","url":null,"abstract":"\u0000 \u0000 The research focuses on investigating the spatial and temporal vulnerability to drought in Odisha, India, utilizing the Standard Precipitation Index (SPI), Drought Index (DI), and Rainfall Anomaly Index (RAI). The historical precipitation data are utilized to identify areas with prolonged rainfall deficits, quantifying the severity and duration of drought conditions. Preliminary analysis includes Normality and Homogeneity tests to ensure the validity of the precipitation datasets. The results depict the use of a non-parametric test for which Mann–Kendall trend test and Sen's Slope test are conducted. The districts exhibiting significant decreasing trends are identified as most critical for drought assessment. The findings from drought indices indicate that most districts have been affected by drought for approximately 50 years, with some districts experiencing severe or extreme conditions for over 10 years. Among the nine districts exhibiting a decreasing trend, four districts demonstrate a significant trend at a 5% significance level. These four districts are experiencing extremely and severely dry conditions, and while they display a significant decreasing trend, they are potentially vulnerable to the adverse impacts of drought conditions in the future. The study will serve in understanding and addressing the vulnerability to drought in Odisha, providing crucial insights for effective mitigation and management strategies.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140687225","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

Effects of Fe3O4 magnetic nanoparticles on nitrate removal efficiency: an optimization study using response surface methodology Fe3O4 磁性纳米粒子对硝酸盐去除效率的影响：利用响应面方法进行的优化研究

Water Practice & Technology Pub Date : 2024-04-18 DOI: 10.2166/wpt.2024.093

Özlem Demir, Betül Firat

引用次数: 0

Enhancing anaerobic digestion efficiency in dairy waste water treatment: a comprehensive review of enzyme-based pre-treatment by microorganisms in South Africa 提高乳制品废水处理中的厌氧消化效率：南非微生物酶预处理综合评述

Water Practice & Technology Pub Date : 2024-04-17 DOI: 10.2166/wpt.2024.095

Hugendra Rishay Moodley, Laurah Gutu, W. Ayinde, D. Ikumi, M. Basitere

{"title":"Enhancing anaerobic digestion efficiency in dairy waste water treatment: a comprehensive review of enzyme-based pre-treatment by microorganisms in South Africa","authors":"Hugendra Rishay Moodley, Laurah Gutu, W. Ayinde, D. Ikumi, M. Basitere","doi":"10.2166/wpt.2024.095","DOIUrl":"https://doi.org/10.2166/wpt.2024.095","url":null,"abstract":"\u0000 The escalating global demand for dairy products due to population growth has led to increased production in the dairy industry, resulting in a significant rise in wastewater generation. This wastewater, laden with contaminants such as fats, oils, and greases (FOGs), biological oxygen demand (BOD), chemical oxygen demand (COD), nitrogen, and phosphorus, poses a threat to freshwater sources. Anaerobic digestion (AD) is considered the optimal treatment method for dairy wastewater, but the high-fat content poses challenges like reactor clogging. To overcome this, various authors propose and implement an enzymatic pre-treatment strategy that improves FOG and organic content removal, increases biogas production, and addresses economic and environmental concerns. Despite the proven efficacy of enzymatic pre-treatment, a significant drawback is the associated cost. However, it remains a promising strategy for enhancing the biodegradability of complex organic compounds in dairy effluents. This review delves into the crucial role of enzyme-producing microorganisms in enhancing AD efficiency for dairy wastewater treatment, emphasizing their potential benefits and addressing the economic and environmental considerations associated with this approach.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"92 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140694388","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

Prefiltration pilot study with drum filters 鼓式过滤器预过滤试验研究

Water Practice & Technology Pub Date : 2024-04-17 DOI: 10.2166/wpt.2024.094

Tobias Asp, Joana Nunes, S. Tumlin

{"title":"Prefiltration pilot study with drum filters","authors":"Tobias Asp, Joana Nunes, S. Tumlin","doi":"10.2166/wpt.2024.094","DOIUrl":"https://doi.org/10.2166/wpt.2024.094","url":null,"abstract":"\u0000 \u0000 The Rya wastewater treatment plant (WWTP) in Gothenburg, Sweden, is facing new and stricter effluent requirements and an increased predicted flow and population in the coming years. A pilot study was done to evaluate drum filters as a possible space-efficient pretreatment compliment to the conventional pre-settling tanks. The pilot trials proved that the drum filter was able to reduce organic materials and phosphorous at different loads. The reduction was similar between two different pore sizes (100 and 300 μm) and the suspended solids (SS) effluent concentrations (35–200 mg/L) was similar to the conventional pre-settling tanks (40–130 mg/L). The two pore sizes had similar maximum flow capacities but the 300 μm was able to maintain that capacity for a longer time and higher influent SS concentrations. Chemical precipitation was able to increase the reduction of both SS and phosphorous. The drum filters could handle higher SS peaks during tunnel flush events while maintaining similar effluent SS concentrations as during normal operation. It became clear when analyzing the results that daily average data did not capture bypass events caused by momentaneous peaks in either influent SS or flow. Hourly data analysis is needed to correctly design and dimension a pre-filtration process with drum filters.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140692932","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

Adaptation of trend analysis over a small-scale region for assessing climate change parameters 调整小范围区域的趋势分析，以评估气候变化参数

Water Practice & Technology Pub Date : 2024-04-16 DOI: 10.2166/wpt.2024.090

Vincent P, Bharani Baanu, Brindha U, Ananth C, J. K

{"title":"Adaptation of trend analysis over a small-scale region for assessing climate change parameters","authors":"Vincent P, Bharani Baanu, Brindha U, Ananth C, J. K","doi":"10.2166/wpt.2024.090","DOIUrl":"https://doi.org/10.2166/wpt.2024.090","url":null,"abstract":"\u0000 Several natural and anthropogenic activities mainly escalate the demand for water and food and develop implications for their availability. Hence, it is necessary to analyse the natural and man-made changes for managing resources precisely. This study focuses on assessing the trends of climatic factors such as rainfall and temperature using the Mann–Kendall (MK) test and innovative trend analysis (ITA) for the agricultural cropping seasons. The findings revealed that a statistically insignificant increasing trend in rainfall is observed for all three cropping seasons (i.e.) Kuruvai/Samba (June–September), Thaladi/Navarai (October–January), and Sornavari (February–May), while the mean temperature shows a significantly increasing trend for all three cropping seasons. The results obtained using the MK test are compared with those of the ITA test to identify the reliable trend technique for climatic factor analysis of small regions. To manage the impacts of climate change and develop sustainable conditions in agriculture, this micro-level study assists the decision makers to prefer suitable trend analysis techniques and helps in identifying the climate change adaptation strategies for small regions. Also, this study is helpful for rural farmers to increase their adaptability conditions with regard to the climate change impacts as they are the frontline victims of climate change.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"3 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140697864","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

Characterization and applicability of the Naima–Tiaret–Algeria illite-montmorillonite clay for methylene blue dye removal: adsorption kinetic, isotherm and thermodynamic studies Naima-Tiaret-Algeria 伊利石-蒙脱石粘土去除亚甲基蓝染料的特性和适用性：吸附动力学、等温线和热力学研究

Water Practice & Technology Pub Date : 2024-04-16 DOI: 10.2166/wpt.2024.077

T. Mohamed, L. Nadjia, D. Abdelkader, E. Abdelkader, Belghazi abderrahmane, Zorgi Billal

{"title":"Characterization and applicability of the Naima–Tiaret–Algeria illite-montmorillonite clay for methylene blue dye removal: adsorption kinetic, isotherm and thermodynamic studies","authors":"T. Mohamed, L. Nadjia, D. Abdelkader, E. Abdelkader, Belghazi abderrahmane, Zorgi Billal","doi":"10.2166/wpt.2024.077","DOIUrl":"https://doi.org/10.2166/wpt.2024.077","url":null,"abstract":"\u0000 \u0000 An illite-montmorillonite clay from Naima, IMN (Algeria) was treated via physical and chemical treatment (TIMN) and investigated for the removal of methylene blue. IMN and TIMN clays were characterized by XRD, XRF, SEM-EDS, DSC-GA, FTIR and DC electrical conductivity methods. To analyze the sorption behavior of MB on the clays, a mechanistic model for interpreting the sorption data was developed. IMN clay revealed high sorption capacity (1.925 × 10−2 kg kg−1) for MB in 60 min. The pseudo-second-order model had a very good agreement to describe the MB adsorption process. The adsorption capacities, qe,exp, of 4.327 × 10−2 and 4.914 × 10−2 kg kg−1 for IMN and TIMN, respectively, were obtained. The free energy from the D–R model from adsorbing MB using IMN and TIMN ranged from 1.581 to 0.745 × 10−3J mol−1, respectively, suggesting that the process is physisorption. Besides, the sorption process was more sensible to temperatures that increase was beyond 40 °C causing a decrease in adsorption capacity, indicating that the adsorption reaction of MB onto IMN was exothermic. The adsorption mechanism of I/M clay to remove MB was likely based on hydrogen bonding, electrostatic attraction, cation exchange and n–π interaction. These results proved that TIMN was a promising adsorbent for removing MB from its simulated wastewater.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"108 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140695325","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

Experimental study of the effect of rectangular debris blockage on the scour hole development around a cylindrical bridge pier 矩形碎片堵塞对圆柱形桥墩周围冲刷孔发展影响的实验研究

Water Practice & Technology Pub Date : 2024-04-16 DOI: 10.2166/wpt.2024.092

Ali Mahdian Khalili, Mehdi Hamidi, Pouria Akbari Dadamahalleh

{"title":"Experimental study of the effect of rectangular debris blockage on the scour hole development around a cylindrical bridge pier","authors":"Ali Mahdian Khalili, Mehdi Hamidi, Pouria Akbari Dadamahalleh","doi":"10.2166/wpt.2024.092","DOIUrl":"https://doi.org/10.2166/wpt.2024.092","url":null,"abstract":"\u0000 \u0000 Studying the influences of the debris settled by the flood upstream of the bridge pier on the scour is important. In the present study, experimental tests were performed as four models including the bridge pier, the bridge pier with buried debris, the bridge pier with the free debris, and the bridge pier with free debris and the bed sill with the downstream gap equal to 0, 1, 2, 3, and 4 times of pier diameter. The results showed that buried debris increased the maximum length of the scour hole (ls), and the maximum width of the scour hole (ws) by about 50, and 180% respectively in comparison with the alone pier. It resulted that buried debris has a more increased effect than free debris. Free debris at low submergence ratios reduces ls by up to 27%, and in high submergence ratios increases it by up to 37%. Also, free debris increases ws in all submergence ratios, which is by up to 127% for the critical case compared to the case without debris. At all distances, the bed sill reduces ls and ws, and the best performance for reducing ls and ws is when it is attached to the bridge pier.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"24 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140696493","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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