Maryam Sarkhosh; Ali Asghar Najafpoor; Mona Tabriziazad
Abstract
Treatment of Fresh Leachate From Municipal Solid Waste This study aimed at the examination of the efficiency of roughing filter in nitrate and chemical oxygen demand removal (COD), obtained in the fresh leachate from municipal solid waste landfill. Sampling was done in 3 rates 0.5m/h, 1m/h and 1.5 m/h, ...
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Treatment of Fresh Leachate From Municipal Solid Waste This study aimed at the examination of the efficiency of roughing filter in nitrate and chemical oxygen demand removal (COD), obtained in the fresh leachate from municipal solid waste landfill. Sampling was done in 3 rates 0.5m/h, 1m/h and 1.5 m/h, including simultaneous sampling from input and output filtering, to determine the concentration of nitrate and COD. The average efficiency of COD removal in filtration rates of 0.5 m/h, 1 m/h and 1.5 m/h was equal to 84, 88 and 85 % respectively. The average removal efficiency of nitrate in filtration rates of 0.5 m/h, 1 m/h and 1.5 m/h was equal to 88, 88 and 85 % respectively. Output values of COD and nitrate were lower than the environmental organization standard (p < 0.05). Based on the results of this study, the nitrate removal with a roughing filter was better than that obtained with COD. Keywords: Roughing Filter, Nitrate, Chemical Oxygen Demand,
Mona Tabriziazad; Anooshiravan Mohseni Band-pay
Abstract
ABSTRACT
Background and Objectives: Over the last several decades, huge amounts of different kinds of wastes have been produced by human activities and alterations in man’s lifestyle and consumption patterns. Medical sciences are among the world’s top advanced professional sections. However, ...
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ABSTRACT
Background and Objectives: Over the last several decades, huge amounts of different kinds of wastes have been produced by human activities and alterations in man’s lifestyle and consumption patterns. Medical sciences are among the world’s top advanced professional sections. However, it seems that a portion of the produced wastes in medical units called "special wastes" or "clinical wastes", have not been seriously taken into consideration especially in developing countries, This study examined the Waste Management assessment in educational hospitals of Shahid Beheshti University of Medical Sciences.
Materials and Methods: This cross-sectional study was conducted in 12 educational hospitals of Shahid Beheshti University of Medical Sciences in autumn 2013. First, a questionnaire was designed and its validity was approved. Then, the required data including (production, segregation, storage, collection, treating, transportation, and Disposal) was gathered during visits to participating hospitals. Finally, the collected data were analyzed using Microsoft Excel and SPSS version 16.
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Results:Findings showed that the daily production of infectious and sharps wastes in the studied hospitals generally equaled 3387 kg. All hospitals were equipped with non-incineration systems; however, only 83.3% of them were active. Therefore, some infectious wastes were disposed of along with urban wastes without being sterilized.
Conclusion: Overall, waste management in hospitals was relatively appropriate, but due to the importance of the issue, it needs to pay more attention in some cases.