Waste Management
Arman Shahnazari
Abstract
Today, in metropolitan areas, principled and hygienic waste management is one of the most important issues in the field of urban management. With the growth of science and technology, it has become clear that waste recycling is one of the most appropriate options in waste disposal. On the other hand, ...
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Today, in metropolitan areas, principled and hygienic waste management is one of the most important issues in the field of urban management. With the growth of science and technology, it has become clear that waste recycling is one of the most appropriate options in waste disposal. On the other hand, a significant amount of municipal solid waste is organic waste. If this waste is converted into organic fertilizer, which both helps to preserve the environment and creates employment, the final product, which is compost fertilizer, can be used in agriculture to improve texture. Soil is used to increase storage capacity and increase soil organic matter and is also used as a suitable alternative to chemical fertilizers. Due to the importance of this research, it has evaluated the most common technologies for fertilizer production from municipal solid waste. The technologies considered in this research are the vermicomposting method, Windrow composting, and in-vessel composting. To comprehensively study these technologies, two methods, VIKOR and simple additive weighting (SAW) were used. The results of this study showed that among the selected technologies, vermicomposting technology obtained the highest score in both methods of multi-criteria decision making model and was selected as the best option for fertilizer production from municipal solid waste. In-vessel composting technology and Windrow composting came in second and third, respectively.
Waste Management
Elham Kousha; Behnam Sepehrnia; Atieh Bidgolian
Abstract
One of the sources of municipal wastes is hospitals and health centers. Currently in Iran, details regarding the quantity and quality of wastes generated in health centers are not available and specialists are facing many unknowns in planning, systematic and accurate management of wastes generated in ...
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One of the sources of municipal wastes is hospitals and health centers. Currently in Iran, details regarding the quantity and quality of wastes generated in health centers are not available and specialists are facing many unknowns in planning, systematic and accurate management of wastes generated in these centers. This is a cross sectional-exploratory and an applied study during 2017 in health-care centers in south of Tehran. In this study, evaluating the 90 checklist set during different seasons by environmental health experts, weights and volumes of regular and infectious wastes in health centers and management of wastes generated have been determined. The weight The of waste produced per person was 24 gr for regular waste and 13/6 gr for infectious-hazardous waste and 10 gr for sharp waste referring for each day. . The volume of waste produced per person was also 0/03 liters for regular waste and 0/014 liters for infectious-hazardous waste and 0/01 liters for sharp waste referring for each day. The amount of waste generated in health-care centers is much lower than that could be a serious challenge for the waste management of these centers according to the type of their activity that is administrative and educational centers. The weakness of waste separation and not prevention of mixing infectious and ordinary waste, the need to take training and further supervision of staff. The best performance of waste management system in these centers regarding the safe and accurate disposal of sharp wastes was in Safety box.