Water-Energy Nexus最新文献

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Eliminations of sulphur and fluoride from contaminated water by the applications of various types of biosorbents materials 通过应用各种生物吸附材料消除受污染水体中的硫化物和氟化物
Water-Energy Nexus Pub Date : 2025-03-17 DOI: 10.1016/j.wen.2025.03.001
Subhashish Dey , G.T.N. Veerendra , A.V. Phani Manoj , P.S.S. Anjaneya Babu , Gogineni Venkata Jagadeesh , J.N.V.R. Swarup Kumar
{"title":"Eliminations of sulphur and fluoride from contaminated water by the applications of various types of biosorbents materials","authors":"Subhashish Dey ,&nbsp;G.T.N. Veerendra ,&nbsp;A.V. Phani Manoj ,&nbsp;P.S.S. Anjaneya Babu ,&nbsp;Gogineni Venkata Jagadeesh ,&nbsp;J.N.V.R. Swarup Kumar","doi":"10.1016/j.wen.2025.03.001","DOIUrl":"10.1016/j.wen.2025.03.001","url":null,"abstract":"<div><div>Industrial and human waste releases sulphur and fluoride metals into the water sources, polluting them and endangering humans and the environment. There are various methods available for removals of the pollutants from the water. The membrane filtering and Chemical precipitation are more expensive, useless at low metal concentrations, and produce vast amounts of sludge and toxic by products that must be disposed of when treating big volumes of water. Alternative the wastewater treatment using the biosorption technology is environmentally friendly method. These methods are cheaper, more accessible, and reusable than traditional ones. Biomass can be treated physically and chemically treated before usage. The other parameters included the contact time, agitation speed, adsorbent dosage, pH, and temperature also affects the biosorption performances. After the removal of sulphur and fluorides from water, the bio-sorbent can be regenerated and reused to save money. Wastewater pollution removal using adsorption method is generally accepted. In the present scenario, the magnetic biosorbents and nanoparticles biosorbents are used for wastewater treatment have been developed. The magnetic biosorbents are attractive because to their various active sites, large specific surface area, easy separation, and lower cost. Chemical activations like acid, alkali, and salt improve biosorbents adsorption. In this observe, the various biosorbents have been developed for their better performance on defluoridation and desulphuridation. Due to different scientific barriers in the biosorption procedures those obstruct its commercialization; there has been a gradually rising consideration in this area of study. Of late more consideration is being paid in the formation of cost-effective adsorbents using various agricultural wastes, plant biomass, bacteria, algae and fungi. This review article highlights the applications of different biosorbents, sorption isotherm, and kinetics. In addition, the challenges associated to the engineering uses of nanobiosorbents and several suggestions to deal with these issues are accessible to support their practical using forecast.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 73-92"},"PeriodicalIF":0.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment on water resource development and security in a traditional coal-producing region in northern China 中国北方传统煤区水资源开发与安全评价
Water-Energy Nexus Pub Date : 2025-02-22 DOI: 10.1016/j.wen.2025.02.002
Zhiming Li , Jing Xie , Yifan Wang , Kun Cai , Tingting Wang , Ying Xue , Yuhu Zhang , Xiao Pu
{"title":"Assessment on water resource development and security in a traditional coal-producing region in northern China","authors":"Zhiming Li ,&nbsp;Jing Xie ,&nbsp;Yifan Wang ,&nbsp;Kun Cai ,&nbsp;Tingting Wang ,&nbsp;Ying Xue ,&nbsp;Yuhu Zhang ,&nbsp;Xiao Pu","doi":"10.1016/j.wen.2025.02.002","DOIUrl":"10.1016/j.wen.2025.02.002","url":null,"abstract":"<div><div>Water resource utilization and security evaluation is integral to the sustainable development of urban areas within a typical coal-producing region. Comprehensive assessments on water resource development are imperative for effective sustainable water planning. However, challenges arise due to mismatches in scale between data sets and methodologies. This study focused on Shanxi Province, a principal coal-producing region in northern China, and conducted an assessment on water resource development and security levels utilizing a dataset from 2011 to 2020 and a comprehensive index method. Future scenarios for water supply and demand were projected for the period of 2021–2035 using the STELLA model. The results showed that Shanxi Province experienced a prolonged process of water resource scarcity, with the supply–demand gap initially widening and subsequently narrowing during the period of 2011–2020. The mean annual development ratios for surface water and groundwater resource surpassed 86% and 34%, respectively. Across the eleven cities in the province, extents of water scarcity exhibited subtle differences, with water shortages occupying 1.4–12.8% of the overall water supply. Proportions of poor, average and good water resource security status in the province were 27.3%, 63.6%, and 9.1%, respectively. Identified water security level indicators included surface water availability, urbanization rate, water consumption for secondary industry, water demand of tertiary industry, wastewater treatment rate, and water demand of eco-environmental systems. These indicators maintained major weights in the assessment on water security, reflecting the inadequacy of available water resource to satisfy supply requirements and to fulfill the demands of social and economic development. Among future forecast scenarios, the least severe water shortage was obtained in the scenario concerning sustainable water resource development. Compared to the baseline development scenario, the water shortage in 11 cities in the sustainable development scenario was attenuated, with an reduction ranging from 10.53% to 78.57%.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 31-44"},"PeriodicalIF":0.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abundance changes and transfer mechanism of antibiotic resistance genes in water under sub-lethal disinfection 亚致死消毒条件下水中抗生素耐药基因丰度变化及传递机制
Water-Energy Nexus Pub Date : 2025-02-18 DOI: 10.1016/j.wen.2025.02.001
Yunshu Zhang, Keke Dong, Tao Liu, Lixia Shi, Mingqiang Ren, Cong Li
{"title":"Abundance changes and transfer mechanism of antibiotic resistance genes in water under sub-lethal disinfection","authors":"Yunshu Zhang,&nbsp;Keke Dong,&nbsp;Tao Liu,&nbsp;Lixia Shi,&nbsp;Mingqiang Ren,&nbsp;Cong Li","doi":"10.1016/j.wen.2025.02.001","DOIUrl":"10.1016/j.wen.2025.02.001","url":null,"abstract":"<div><div>Antibiotic resistance genes (ARGs) have become a global challenge due to their widespread resistance to multiple classes of antibiotics. The emergence of antibiotic resistance represents a significant obstacle to the effective treatment of bacterial infections in clinical settings. Furthermore, it poses a grave threat to public health, serving as a primary reason for epidemic outbreaks and high mortality rates. Disinfection has been demonstrated to have a good inactivation effect on antibiotic resistant bacteria (ARB) and a certain removal effect on resistant genes compared to the traditional treatment process. However, sub-lethal disinfection effects are inevitable. To improve the study and enhancement of ARGs removal, the abundance and transfer of ARGs across various disinfection techniques under sub-lethal conditions were summarized in the review. Additionally, possible mechanisms of transfer of ARGs under these conditions were also explored. Sub-lethal disinfection has been shown to accelerate the horizontal gene transfer (HGT) of ARGs, thereby increasing potential health risks. This review centers on the current status and mechanism of ARGs diffusion under sub-lethal disinfection conditions, aiming to provide a theoretical basis and research foundation for cost-effective degradation of ARGs.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 18-30"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Economic feasibility assessment and parameter sensitivity analysis of rainwater harvesting systems in different climatic zones of China 中国不同气候带雨水收集系统经济可行性评价及参数敏感性分析
Water-Energy Nexus Pub Date : 2025-01-16 DOI: 10.1016/j.wen.2025.01.001
Chonghua Xue , Feng Xiong , Junqi Li , Xiaojing Li , Jing Li , Yu Wang , Xiangyu Li , Ziyu Cui
{"title":"Economic feasibility assessment and parameter sensitivity analysis of rainwater harvesting systems in different climatic zones of China","authors":"Chonghua Xue ,&nbsp;Feng Xiong ,&nbsp;Junqi Li ,&nbsp;Xiaojing Li ,&nbsp;Jing Li ,&nbsp;Yu Wang ,&nbsp;Xiangyu Li ,&nbsp;Ziyu Cui","doi":"10.1016/j.wen.2025.01.001","DOIUrl":"10.1016/j.wen.2025.01.001","url":null,"abstract":"<div><div>Rainwater is an important non-traditional water resource, and the economic benefits of rainwater harvesting and utilization vary considerably across different climatic conditions. This paper constructs typical rainwater harvesting (RWH) models based on road watering and green space watering reuse pathways, as well as typical flat water year and cistern emptying time in three distinct climate zones of China: Urumqi (located in a semi-arid area), Baoding (located in a semi-humid area), and Shantou (located in a humid area). Using the Infoworks ICM model, long-term simulations (30 years) were conducted to evaluate the economic advantages of rainwater utilization across these climate zones. The Particle Swarm Optimization (PSO) was employed to optimize the cistern volume by integrating Net Present Value (NPV) and Benefit Cost Ratio (BCR). Additionally, multiple nonlinear regression analyses were employed to quantify the relationship between various catchment subsurfaces and the optimal reservoir volume. Sensitivity analyses, including Sobol sensitivity analysis, were performed for parameters such as subsurface characteristics, water price, discount rate, and number of days for emptying the impoundment. The study results indicated that the change curves of NPV and BCR in all three cities exhibit an increasing and then decreasing trend with the increase of reservoir volume under different reservoir setup scenarios. The optimal volume of the reservoir could be articulated through the fitting equation that relates the green space ratio to the road ratio. The discount rate and water price significantly impacted the optimal volume of storage tanks, with the sensitivity of the parameter of the number of days of emptying of the storage tanks to the optimal volume being greater in Shantou, a city in a high humid area. Conversely, in Urumqi, a semi-arid area, the variation of the parameter of greenland rate had a greater sensitivity to the volume of storage tanks. These findings provide valuable insights for the design and implementation of rainwater harvesting and utilization systems, offering practical guidance for sustainable urban development.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 6-17"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mitigation of nitrogen losses during pig manure management: Impact of manure cleaning technique 减轻猪粪管理过程中的氮损失:粪便清洁技术的影响
Water-Energy Nexus Pub Date : 2024-12-09 DOI: 10.1016/j.wen.2024.12.001
Jing Zhang , Pei Li , Junfeng Wan , Xiaoying Guo , Yan Wang , Juan Wang
{"title":"Mitigation of nitrogen losses during pig manure management: Impact of manure cleaning technique","authors":"Jing Zhang ,&nbsp;Pei Li ,&nbsp;Junfeng Wan ,&nbsp;Xiaoying Guo ,&nbsp;Yan Wang ,&nbsp;Juan Wang","doi":"10.1016/j.wen.2024.12.001","DOIUrl":"10.1016/j.wen.2024.12.001","url":null,"abstract":"<div><div>Proper management of nitrogen-containing pig manure is crucial to realize its benefits of supporting plants-grow as fertilizer while minimizing its impact on the environment and climate change. Dry collection, rinsing and water submerging are manure cleaning techniques adopted in different types of pig farms and in different regions. As the first step of manure management, manure cleaning technique affects manure generation and nitrogen flow in the subsequent treatment and utilization processes. This short communication is to discuss different manure cleaning techniques and their impacts on nitrogen flow through pig manure management processes. Reducing nitrogen losses should focus on solid manure treatment such as composting when manure is dry collected. More diversified pathways of nitrogen losses are possible when manure is cleaned using water submerging technique. It is thus needed to develop proper and specific nitrogen management strategies and technologies, taking into account the manure cleaning technique adopted in pig farms.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"8 ","pages":"Pages 1-5"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Overcoming water, sanitation, and hygiene challenges in critical regions of the global community 克服全球社会关键地区的水、环境卫生和个人卫生挑战
Water-Energy Nexus Pub Date : 2024-12-01 DOI: 10.1016/j.wen.2024.11.003
Debajyoti Bose , Riya Bhattacharya , Tanveen Kaur , Ritesh Banerjee , Tanya Bhatia , Aritra Ray , Bhavika Batra , Arnab Mondal , Paulami Ghosh , Surajit Mondal
{"title":"Overcoming water, sanitation, and hygiene challenges in critical regions of the global community","authors":"Debajyoti Bose ,&nbsp;Riya Bhattacharya ,&nbsp;Tanveen Kaur ,&nbsp;Ritesh Banerjee ,&nbsp;Tanya Bhatia ,&nbsp;Aritra Ray ,&nbsp;Bhavika Batra ,&nbsp;Arnab Mondal ,&nbsp;Paulami Ghosh ,&nbsp;Surajit Mondal","doi":"10.1016/j.wen.2024.11.003","DOIUrl":"10.1016/j.wen.2024.11.003","url":null,"abstract":"<div><div>This review provides a critical analysis of the global water and sanitation crisis, as well as how community-based approaches have led to innovative water management solutions. Regions of sub-Saharan Africa, south Asia, the Middle East, and island countries have been taken as models to understand mitigating crises related to water, sanitation, and hygiene (WASH) services. Selected WASH cases based on specific inclusion and exclusion criteria that highlighted finance, sustainability, and community engagement. The review analyses methods through which communities below the poverty line, living in densely populated areas, war zones, and island countries can foster innovation, and collaborations.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 277-296"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comprehensive review of production and characterization of biochar for removal of organic pollutants from water and wastewater 全面回顾用于去除水和废水中有机污染物的生物炭的生产和特征描述
Water-Energy Nexus Pub Date : 2024-11-13 DOI: 10.1016/j.wen.2024.11.001
Deepraj Sarkar, Tanushka Florence Panicker, Ranjeet Kumar Mishra, M. Srinivas Kini
{"title":"A comprehensive review of production and characterization of biochar for removal of organic pollutants from water and wastewater","authors":"Deepraj Sarkar,&nbsp;Tanushka Florence Panicker,&nbsp;Ranjeet Kumar Mishra,&nbsp;M. Srinivas Kini","doi":"10.1016/j.wen.2024.11.001","DOIUrl":"10.1016/j.wen.2024.11.001","url":null,"abstract":"<div><div>Biochar is produced by the pyrolysis of organic constituents at moderate to low temperatures and oxygen-deficient conditions. Various types of biomass wastes are used as the starting points for biochar production, which not only makes better use of the waste resources already available but also significantly lessens environmental harm. Biochar is extensively used as a soil amendment, biofuel, catalyst, energy storage, and carbon sequestration regulator because of its excellent efficacy, environmental friendliness, and affordable price. Biochar has lately received much interest in wastewater treatment due to its significantly expanded surface area, excellent pore volume, accessibility of functional charge, and environmental durability. It may also be recycled because of its exceptional therapeutic effectiveness and resource recovery capabilities. The ability of biochar to absorb major contaminants makes it a suitable treatment solution for wastewater. For the intent of developing biochar, the techniques of gasification, hydrothermal carbonization, and pyrolysis have been developed. Biochar was employed to absorb minerals, heavy metals (HMs), and organic pollutants to remove impurities from water and wastewater. The adsorption methods of organic contaminants, nutrients in wastewater and HMs were examined. Understanding the interactions among the biochar’s structures, adsorption traits, and preparation parameters is crucial. The generation, characterization, and biochar exploitation for the elimination of organic and HMs were the main topics of the current review.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comprehensive review of effective parameters to improve the performance of the Savonius turbine using a computational model and comparison with practical results 利用计算模型全面审查提高萨沃尼水轮机性能的有效参数,并与实际结果进行比较
Water-Energy Nexus Pub Date : 2024-11-13 DOI: 10.1016/j.wen.2024.11.002
Ali Jebelli , Nafiseh Lotfi , Mohammad Saeid Zare , Mustapha C.E. Yagoub
{"title":"A comprehensive review of effective parameters to improve the performance of the Savonius turbine using a computational model and comparison with practical results","authors":"Ali Jebelli ,&nbsp;Nafiseh Lotfi ,&nbsp;Mohammad Saeid Zare ,&nbsp;Mustapha C.E. Yagoub","doi":"10.1016/j.wen.2024.11.002","DOIUrl":"10.1016/j.wen.2024.11.002","url":null,"abstract":"<div><div>Amidst growing global concerns over climate change and escalating greenhouse gas emissions from fossil fuels, the pursuit of renewable energy sources has become critical. This study focuses on harnessing hydropower using Savonius turbines, which are known for their efficiency in generating energy at lower flow rates. However, the intrinsic low efficiency of these turbines necessitates precise optimization tailored to specific river or channel conditions. In this research, we optimized the performance of Savonius turbines by analyzing key parameters such as the height-to-diameter ratio, blade twist, and the integration of multi-stage configurations with deflectors. Our findings reveal significant efficiency improvements through strategic modifications. Specifically, by reducing the height-to-diameter ratio from 1.2 to 0.8 and maintaining a Tip Speed Ratio (TSR) of 0.6, the power coefficient increased by 15%, from 0.33 to 0.38. Further optimization was achieved by adjusting the blade twist angle, with an increase in power coefficient up to an optimal angle of 45°, beyond which efficiency declined. Implementing a two-stage turbine setup with a 90-degree phase difference between stages further improved the power coefficient to 0.51 at the same TSR. Additionally, the use of deflectors, particularly at a 90° angle, significantly boosted the power coefficient, highlighting their effectiveness in optimizing water flow impact on the turbine. This comprehensive study not only advances the understanding of Savonius turbine optimization but also contributes to broader renewable energy applications. The research offers critical insights into sustainable hydroelectric power generation, providing practical solutions to enhance turbine performance for real-world applications.</div></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 266-274"},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance evaluation and factors influencing a drinking water treatment plant, Shire Indassilassie, Ethiopia 埃塞俄比亚 Shire Indassilassie 饮用水处理厂的性能评估和影响因素
Water-Energy Nexus Pub Date : 2024-09-11 DOI: 10.1016/j.wen.2024.08.001
Nguse Mekonen Mesfun , Sisay Demeku Derib
{"title":"Performance evaluation and factors influencing a drinking water treatment plant, Shire Indassilassie, Ethiopia","authors":"Nguse Mekonen Mesfun ,&nbsp;Sisay Demeku Derib","doi":"10.1016/j.wen.2024.08.001","DOIUrl":"10.1016/j.wen.2024.08.001","url":null,"abstract":"<div><p>This research assesses the efficacy of the water treatment plant in Shire Indassilassie, Tigray, Ethiopia, focusing on the slow sand filtration system. Despite the inclusion of horizontal roughing filtration and a sedimentation tank, the water treatment plant struggles with an inadequate and turbid water supply. This study evaluates the water treatment plant’s performance through field evaluation, interviews, and laboratory experiments, concentrating on major treatment processes to identify performance-limiting factors. The water source had an average turbidity of 29.70 ± 1.03 NTU in the dry season and 94.27 ± 16.71 NTU in the summer. Results indicate that horizontal roughing filtration, sedimentation tank, and slow sand filtration achieve average turbidity removal efficiencies of 42.02% ± 4.00%, 5.67% ± 3.15%, and 83.51% ± 8.75%, respectively, during the dry season. In the summer or wet season, these treatment units achieve efficiencies of 40.06% ± 3.26%, 28.17% ± 4.62%, and 77.07% ± 4.61%, respectively. Additionally, the average run times for slow sand filtration are 22 days in the dry season and 13 days in the summer. Total and fecal coliform removals were effective, except in the sedimentation tank. A one-way ANOVA confirms a significant difference in turbidity among treatment units. Factors such as fine filter sand particles causing faster clogging, pipe misconnections, inadequate cleaning practices, irregular filtration rates, air binding due to a lack of backfilling at startup, and a lack of periodic monitoring and emergency response lead to suboptimal turbidity removal and shorter slow sand filtration run times. The study underscores the need for corrective measures to address these issues, enhancing water treatment plant sustainability in the region.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 235-242"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000146/pdfft?md5=d01a4f1de092fc4fc6e87d3c45fd7d79&pid=1-s2.0-S2588912524000146-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on rapid policy-based strategic environmental assessment-taking China's regional development policy of Zhejiang Pilot Free Trade Zone as an example 基于政策的快速战略环境评估研究--以中国浙江自由贸易试验区的区域发展政策为例
Water-Energy Nexus Pub Date : 2024-09-05 DOI: 10.1016/j.wen.2024.09.001
Mingzhu Xu , Huanhuan Wang , Haiqing Geng , Hefang Hong , Lina Wu
{"title":"Study on rapid policy-based strategic environmental assessment-taking China's regional development policy of Zhejiang Pilot Free Trade Zone as an example","authors":"Mingzhu Xu ,&nbsp;Huanhuan Wang ,&nbsp;Haiqing Geng ,&nbsp;Hefang Hong ,&nbsp;Lina Wu","doi":"10.1016/j.wen.2024.09.001","DOIUrl":"10.1016/j.wen.2024.09.001","url":null,"abstract":"<div><p>Strategic Environmental Assessment(SEA) is acknowledged to be an important decision support tool. SEA concerns potential environmental impacts of decisions made by policy, plan and programs. At present, policy-based SEA is still in the exploratory stage in China. The development of policy-based SEA is extremely slow due to institutional and technical difficulties. In practice, the time from policy proposals to policy implementation is relatively short. So the corresponding policy-based SEA should reflect the characteristics of rapidity, centre on the seriously negative impact that may be caused policy implementation, and provide early and initial warnings.A simple and rapid framework was designed for policy-based SEA in this study. The framework includes four parts, namely, policy analysis, eco-environmental impact identification, eco-environmental sensitivity assessment, policy recommendations. Following this framework, regional development policy of Zhejiang Pilot Free Trade Zone (FTZ) was assessed. Results reveal that: 1)seriously negative environment impacts may arise from petroleum refining and chemical industry, oil and gas storage and transportation, iron ore transportation, liquid bulk commodities transportation. 2) Central Daishan area, Shengsi archipelago, Taohua Island, Liuheng island in Zhejiang FTZ is relatively of high eco-sensitivity, thus the fore-mentioned activities should be environmentally friendly or restricted in these areas. 3)In the future, continuous efforts should be made to promote sealing and automation of petroleum refining, chemical industry. Green petrochemical manufacturing technology utilization is recommended to reduce pollution from the source. Further, accelerating the construction of transportation pipelines is suggested in order to reduce air pollutants emissions caused by vehicle transportation activities. Fishery stock enhancement and releasing is recommended to counteract negative impact on fishery caused by iron and liquid bulk commodity marine transportation.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"7 ","pages":"Pages 227-234"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588912524000134/pdfft?md5=10e1d13bc5e5159407ea38a528fae89a&pid=1-s2.0-S2588912524000134-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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