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Wastewater Characteristics 废水的特点
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2022-02-09 DOI: 10.1201/9781003231264-21
S. Verma, V. Kanwar, S. John
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引用次数: 0
Miscellaneous Water Treatment Methods I 杂项水处理方法
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2022-02-09 DOI: 10.1201/9781003231264-11
S. Verma, V. Kanwar, S. John
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引用次数: 0
Miscellaneous Water Treatment Methods II 杂项水处理方法
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2022-02-09 DOI: 10.1201/9781003231264-12
S. Verma, V. Kanwar, S. John
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引用次数: 0
Sedimentation 沉积
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2022-02-09 DOI: 10.1201/9781003231264-7
S. Verma, V. Kanwar, S. John
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引用次数: 0
Pipeline Systems 管道系统
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2022-02-09 DOI: 10.1201/9781003231264-14
S. Verma, V. Kanwar, S. John
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引用次数: 0
Treatment ofwastewater from separators for rainfall runoff using electrochemical oxidationprocesses 利用电化学氧化过程处理雨水径流分离器产生的废水
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2021-12-01 DOI: 10.37023/ee.8.1-2.5
Morana Drušković, D. Vouk, M. Šiljeg, Krešimir Maldini
In recent years, industry has increased and with it the amount of oily wastewater, which are considered hazardous waste because they contain various types of heavy metals and oils that endanger the environment and human health. In the last twenty years, there has been increased research on new technologies to treat wastewater as efficiently and environmentally friendly as possible. A recent approach to wastewater treatment is the application of electrochemical processes such as the electro-Fenton process, which belongs to the group of electrochemical advanced oxidation processes and electrocoagulation. The aim of this work was to remove organic contaminants and heavy metals from wastewater originating from oil and grease separators that clean stormwater runoff from traffic areas. The use of stainless steel, iron and aluminum electrodes results in electrooxidation, electroreduction and electrocoagulation. At a current of 15 A the treatment efficiency was 50% for COD and 73% for mineral oil. At a current of 110 A the treatment efficiency was 96% for COD and 90% for mineral oil.
近年来,工业不断增加,含油废水的数量也随之增加,含油废水被认为是有害废物,因为它们含有危害环境和人类健康的各种重金属和油类。在过去的二十年里,人们越来越多地研究如何高效、环保地处理废水的新技术。最近的一种污水处理方法是电化学工艺的应用,如电fenton工艺,它属于电化学高级氧化工艺和电絮凝工艺。这项工作的目的是去除来自油类和油脂分离器的废水中的有机污染物和重金属,这些油类和油脂分离器用于清洁交通区域的雨水径流。使用不锈钢、铁和铝电极会产生电氧化、电还原和电凝。在15 a的电流下,COD的处理效率为50%,矿物油的处理效率为73%。在110 a的电流下,COD的处理效率为96%,矿物油的处理效率为90%。
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引用次数: 0
Microbiologicalquality of well water from Koprivnica-Križevci County in 2018 2018年Koprivnica-Križevci县井水微生物质量分析
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2021-12-01 DOI: 10.37023/ee.8.1-2.2
S. Furmeg, Lana Feher Turković, Ana Mojsović-Ćuić, Vesna Jaki Tkalec, Maja Kiš
In this study, microbiological quality of drinking water deriving from the private wells from Koprivnica-Križevci County was investigated. A total of 287 samples from different locations were collected during 2018 and analysed for the following microbiological parameters: total coliforms, Escherichia coli, Enterococcus spp., Clostridium perfringens, Pseudomonas aeruginosa, and the number of aerobic heterotrophic bacteria at 36 °C and 22 °C. The results showed that 24 % of the analysed water samples were of unsatisfactory microbiological quality, with high incidence of faecal contamination. Well water is still the main source of drinking water for many residents of this County, especially in its rural parts, so continuous monitoring and disinfection of drinking water deriving from private wells is of exceptional importance for the public health.
本研究对Koprivnica-Križevci县私家水井饮用水的微生物质量进行了调查。2018年共采集不同地点287份样本,分析36°C和22°C条件下大肠菌群总数、大肠杆菌、肠球菌、产气荚膜梭菌、铜绿假单胞菌、好氧异养菌数量等微生物参数。结果表明,24%的分析水样微生物质量不合格,粪便污染发生率高。井水仍然是该县许多居民的主要饮用水来源,特别是在农村地区,因此对来自私人水井的饮用水进行持续监测和消毒对公众健康尤为重要。
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引用次数: 0
Urban spacechange and future prediction of Kangpur Nagar, Uttar Pradesh using EO data 基于EO数据的北方邦康浦尔纳格尔城市空间变化及未来预测
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2021-12-01 DOI: 10.37023/ee.8.1-2.10
Shubham Sharma, S. Singh, S. Kanga, N. Kranjčić, B. Đurin
Urban Land use changes, measurements, and the analysis of rate trends of growth would help in resources management and planning, etc. In this study, we analyze the urban change dynamics using a support vector machine model. This method derives the urban and rural land-use change and various components, such as population growth, built-up areas, and other utilities. Urban growth increases rapidly due to exponential growth of population, industrial growth, etc. The population growth also affects the availability of various purposes in its spatial distribution. In this present study, we carried out using multi-temporal satellite remote sensing data Landsat MSS (Multispectral scanner), ETM+ (Enhanced thematic mapper), OLI (Operational land imager) for the analysis of urban change dynamics between years 1980-1990, 1990-2003, 2012-2020 in Kanpur Nagar city in the state of Uttar Pradesh in India. In our study, we used SVM (Support Vector Machine) Model to analyze the urban change dynamics. A support vector machine classification technique was applied to generate the LULC maps using Landsat images of the years 1980, 1990, 2003, and 2020. Envi and ArcGIS software had used to identify the land cover changes and the applying urban simulation model (CA- Markov model) in Idrisi selva edition 17.0 software. The LULC maps of 2003 and 2020 were used to simulate the LULC projected map for 2050 using (Cellular automata) CA- Markov based simulation model.
城市土地利用变化、测量和增长率趋势分析将有助于资源管理和规划等。在本研究中,我们使用支持向量机模型分析城市变化动态。该方法推导出城市和农村土地利用变化及其各种组成部分,如人口增长、建成区和其他公用事业。由于人口指数增长、工业增长等原因,城市增长迅速。人口的增长也影响着其空间分布中各种用途的可得性。利用多时相卫星遥感数据Landsat MSS(多光谱扫描仪)、ETM+ (Enhanced thematic mapper)、OLI (Operational land imager)对印度北方邦坎普尔那格尔市1980-1990年、1990-2003年、2012-2020年的城市变化动态进行了分析。在我们的研究中,我们使用SVM(支持向量机)模型来分析城市的变化动态。利用1980年、1990年、2003年和2020年的Landsat影像,采用支持向量机分类技术生成LULC地图。利用Envi和ArcGIS软件识别土地覆盖变化,并在Idrisi selva edition 17.0软件中应用城市模拟模型(CA- Markov模型)。利用2003年和2020年的LULC地图,利用(元胞自动机)CA- Markov模型模拟了2050年的LULC投影地图。
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引用次数: 1
Forest area changesthroughout the years in Bjelovarsko-Bilogorska County 比耶洛瓦尔斯科-比洛戈尔斯卡县的森林面积逐年变化
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2021-12-01 DOI: 10.37023/ee.8.1-2.7
N. Kranjčić, Antonio Jaguljnjak, Jurica Ivanušec, Mihael Heček
The results of forest cover reduction were obtained using raster data and administrative borders for the Republic of Croatia. Examples are taken from other countries to compare the results and show the reduction of cover, both forest and agricultural. The first part of this paper describes the situation in the Republic of Croatia, where Ministry of Environmental Protection provided analysis. The condition of land cover in the Republic of Croatia is presented. The second part of this paper is a description of the task development process in the software package "QGIS". From adding CLC raster data to, the actions performed in the program that were performed until the results arrived. Finally, the interpretation of the obtained data and the conclusion follow.
森林覆盖减少的结果是利用栅格数据和克罗地亚共和国的行政边界获得的。从其他国家的例子来比较结果,显示森林和农业覆盖的减少。本文的第一部分描述了克罗地亚共和国的情况,其中环境保护部提供了分析。介绍了克罗地亚共和国的土地覆盖状况。本文的第二部分是对“QGIS”软件包中任务开发过程的描述。从添加CLC栅格数据到执行程序中执行的操作,直到结果到达。最后,对所得数据进行解释并得出结论。
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引用次数: 0
Influence ofshear rate on the soil's shear strength 剪切速率对土体抗剪强度的影响
IF 0.9 4区 工程技术 Q4 ENGINEERING, ENVIRONMENTAL Pub Date : 2021-12-01 DOI: 10.37023/ee.8.1-2.6
A. bek, G. Jeftić, Stjepan Strelec, Jasmin Jug
One of the most important mechanical properties is shear strength. It is conditioned by the value of the maximum shear stress that the soil can withstand before failure. Exceeding the shear strength causes one particle to slide next to another, causing the failure of soil. The shear strength of the soil for effective stresses is1 a combination of drained strength parameters: internal friction angle (φ) and cohesion (c) defined by the Mohr-Coulomb failure criterion. It is determined “in situ” and by laboratory experiments. Direct shear is the oldest and the simplest laboratory experiment to determine the shear strength of the soil. The first phase of experiment is specimen consolidation under specific vertical stress, and in the second phase specimens are sheared at a given shear rate, depending on the consolidation properties of the soil. Cohesionless soils are sheared at up to 100 times higher shear rate compared to cohesive soils. Shear rate and drainage conditions affect the magnitude of soil strength parameters. The paper is based on the comparison and demonstration of the influence of different shear rates on the peak and residual shear strength in the direct shear device. The tests were performed on two samples of low plasticity clay (CL) and one sample of high plasticity clay (CH).
最重要的力学性能之一是抗剪强度。它取决于土体在破坏前所能承受的最大剪应力值。超过抗剪强度会导致一个颗粒紧挨着另一个颗粒滑动,导致土的破坏。有效应力作用下土体的抗剪强度1为排水强度参数:内摩擦角(φ)和黏聚力(c)的组合,由莫尔-库仑破坏准则定义。它是通过“现场”和实验室实验确定的。直接剪切法是测定土体抗剪强度最古老、最简单的室内试验方法。实验的第一阶段是试样在特定垂直应力下的固结,在第二阶段,根据土壤的固结特性,试样以给定的剪切速率剪切。无黏性土的剪切速率比黏性土高100倍。剪切速率和排水条件影响土体强度参数的大小。对比论证了不同剪切速率对直剪装置峰值抗剪强度和残余抗剪强度的影响。试验采用两种低塑性粘土(CL)和一种高塑性粘土(CH)进行。
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引用次数: 0
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Environmental & Engineering Geoscience
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