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
Rouya Peiravi; Mohammad Vahedian-Shahroodi; Hossein Alidadi; Malihe Noori Sistani
Abstract
Background and objective: Environmental Health Officers (EHO) being essential members of health systems play a key role in the prevention of disease and the environmental sanitation by consulting, inspecting, monitoring and law enforcing (if it’s necessary). Protection of the environment and promotion ...
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Background and objective: Environmental Health Officers (EHO) being essential members of health systems play a key role in the prevention of disease and the environmental sanitation by consulting, inspecting, monitoring and law enforcing (if it’s necessary). Protection of the environment and promotion ofthe community health need to enforce strict rules so that the adverse effects of environmental pollution reduced as much as possible. This study was carried out to survey the knowledge of Environmental Health Officers about the executive process of legal item 13. Materials and Method: This cross-sectional study was performed in 2014, after testing the validity and reliability of questionnaire, they were filled by inspectors.The questions regarding the Knowledge were scored. Relationship between the knowledge and demographic characteristics was analyzed by SPSSsoftware through statistical test including paired T-Test, one-way ANOVA andChi square test at a significant level of 0.05. Results: The mean age of 54 Environmental Health Inspectors was equal to 34.2±6.2, and their mean job experience was 10.35±7.8 years. The number of people with a good knowledge was almost equal to the number of people with poor knowledge. The highest percentage of people (33.3%) had moderateknowledge. The relationship between knowledge with employment status (p= 0.036) and knowledge with academic degree (p=0.05) were significant. Conclusion: According to the obtained results and the importance of EHO’s role in the promotion of community health, it is necessary that a regular training program is structured to increase the EHO’s awareness in regard to the executive process of legal item13 after their employment and before their starting work.
Mohammad Reza Alipoor; Hossein Alidadi; Ali Asghar Najafpoor; Roya Peiravi; Hadi Rahmatiyar
Abstract
Background and objective: Industrial developments and urban sprawl have led to the production of huge proportions of wastewater. Wastewater is potentially harmful for humans and it has remarkably adverse effects on the natural environment. With regard to the importance of preserving health and protecting ...
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Background and objective: Industrial developments and urban sprawl have led to the production of huge proportions of wastewater. Wastewater is potentially harmful for humans and it has remarkably adverse effects on the natural environment. With regard to the importance of preserving health and protecting the natural resources against pollution, this study aimed to evaluate the performance of wastewater stabilization ponds in the wastewater treatment plant of Olang, Mashhad. Methods: This cross‐sectional study examined the raw wastewater and effluent of Olang treatment plant from 2011 to 2012. Weekly sampling as well as BOD5, COD and TSS tests were conducted according to the standard methods. The collected data were analyzed by SPSS software, one‐way ANOVA and one‐sample t‐test at a significance level of 0.05. Results: In 2011, the average concentration of BOD5, COD and TSS in the effluent was 75±30.67, 145±19.46 and 86±13.28 mg/L, respectively. In addition, their treatment efficacy was 79.79±10.77%,82.53±4.57% and 77.17±3.92%, respectively. The figures were respectively 83±14.08, 146±23.72 and 109±14.73 mg/L and 82.7±5.11%, 82.82±3.82% and 78.46±3.93% in 2012. Conclusion: The effluent could be used for agricultural irrigation since its features are compatible with the standard parameters. Paper Type: Research Article