| Popis: |
Introduction: Waste sources include municipal solid waste and municipal wastewater, as well as the air pollutants produced by human and animal digestion. The purpose of the present study was to investigate the level of air pollutants resulting from these waste sources. Materials and methods: In order to conduct this study, emission factors defined by the European Environment Agency were used. First, the type and quantity of the municipal solid waste produced in Isfahan were studied. Next, the amount of municipal solid waste recycling and compost were determined. Then, using related emission factors, emission inventories of PM2.5 and PM10 from municipal solid waste landfill, and ammonia from composting processes were determined. In the subsequent step, the volume from the municipal wastewater treatment facilities of Isfahan and selected nearby cities was specified, and by using the emission coefficient, the total emission of VOCs was determined. By specifying city population and predicting the population for the next 10 years, ammonia from human digestion was estimated. Results: The results showed that annually, 20391 g of VOCs are produced by municipal wastewater treatment facilities in the Isfahan metropolitan area. In addition, it was specified that 675980 kg PM10 and 319740 kg PM2.5 were emitted into the air from Isfahan’s Gardane Zinal landfill each year. Annual amounts of carbon monoxide and ammonia produced by composting are estimated at 11191 and 13189 tons, respectively. Conclusions: Investigating the contributions of various sources of pollutants in metropolitan Isfahan may lead to a suitable context in which the share of different sources of pollutants is understood, and therefore, air pollution management will be possible. |
