Reza Peykanpour Fard; Parvaneh Paykanpour Fard; Hadi Hadian Ghahdarijani
Abstract
Background and Purpose: One of the fundamental problems of air pollution is that it often affects large areas of various land uses, such as cities and agricultural products hundreds of kilometers away from the source of pollutants, or results in cumulative effects with other industries. This research ...
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Background and Purpose: One of the fundamental problems of air pollution is that it often affects large areas of various land uses, such as cities and agricultural products hundreds of kilometers away from the source of pollutants, or results in cumulative effects with other industries. This research aims to quantify the concentration of pollutants in residential areas around industrial areas.Materials and Methods: In this study, the AERMOD software was used for modeling air pollutants. This software uses meteorological data, digital elevation models, and information about pollutant sources. It assesses and quantifies air pollution levels related to PM10, SOX, NOx, and CO pollutants in a specific location.Results: The results of this study indicate that in these 28 population points surrounding the targeted industrial land use, pollutant concentrations in both scenarios with and without background concentrations did not exceed the standard limits for any pollutant. The most significant pollutant in this research was NOx, which showed the slightest difference from the permissible pollution limit. Furthermore, due to the closer proximity of pollutants to environmental standards in this region, increased loading of industrial land uses can lead to various health, economic, and social problems.Conclusion: The findings of this research demonstrate that to assess and quantify pollutant concentrations in the areas surrounding industrial pollutant points, it is advisable to consider background pollution in addition to modeling point sources for greater accuracy in the direction of sustainable development in such areas.
Rouya Peiravi; Hossein Alidadi; Allah Bakhsh javid; Ali Asghar Najafpoor; Habibollah Esmaeili; Fatemeh Joulaei
Abstract
Background and objectives: Water is the major challenging issue worldwide. In Iran, water shortage is more serious than other countries because it is located on arid and semi-arid region. The objective of this research was modeling of drought effects on variation of chemical water quality in the wells ...
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Background and objectives: Water is the major challenging issue worldwide. In Iran, water shortage is more serious than other countries because it is located on arid and semi-arid region. The objective of this research was modeling of drought effects on variation of chemical water quality in the wells of Kashaf Rood area in Mashhad plain in 2006-2010. Materials and Method: Quality and levelraw data(2006-2010) of 16 drinking water wells in Kashaf Rood area and also meteorological parameters were extracted. Data were analyezed by SPSS and Excel softwares and modeled was by STELLA software.Normal and Pearson corrolate test were used in significance level α= 0.05, to understand relationship between water level and quality. Results: Ground water level from 2006 to 2010 have had 6 meter loss. Mashhad plain experienced the least rainfall with an average annual 104.7 mm in 1998-99 and the most rainfall with an minimum annual 414.6 mm. Maximum temperature have been 35 to 40 0C in the hot months and also shortage rain and intensive water level loss were observed in these months in 1991-1992. Examination between water level variation and water ground indexes (TDS & TH) determined that all wells had no significant relationship between thoseparameters except wells No 5(p=0.028) and 9 (p=0.024). According to model results could be concluded model have good accuracy to estimate groundwater characteristics concentration. Conclusion: Mentioned ground water level loss in the area indicates need for appropriate planninig and management of water resources and rainfall so that will be prevented direct and indirect drought (ie: quality change) Paper Type: Research Article