FULL-SCALE AEROBIC COMPOSTING OF MUNICIPAL SOLID WASTE OF ISTANBUL METROPOLITIAN
Composting is a desirable technique to recover the organic fraction of solid wastes for municipalities. It offers the obvious beneficial uses of the resources and creates a useful product from organic waste that would otherwise be landfilled. Since the European Landfill Directive (EU 1999/31) requires the reduction of significant organic part of the MSW to be landfilled, composting has become the viable alternative to landfills. Among the alternatives for the elimination of MSW, composting is widely accepted as the most sustainable strategy for the decomposition and stabilization of the organic fraction of MSW (Hansen et al., 1993; Chefetz et al., 1996).
In order to investigate the composting process for the mixed municipal solid wastes (MSW), the fate of eight different batches was monitored in detail at the Kýsýrmandýra Composting Facility of the Ýstanbul Metropolitan Municipality. The samples taken during the fermentation were analyzed for different physical, chemical and microbiological parameters such as pH, C/N ratio, organic matter, heavy metals and salt content. During composting process, temperature values over 55 °C lasted 22 days. While the concentrations of macro and microelements increased due to the loss of mass caused by degradation of organic matter, salt concentrations decreased by wash out. Despite decreases in salt concentration, the application of compost to soil was still critical in terms of salt content. The nitrogen loss was 42% and primarily occurred at the early stages of the composting process. According to the data obtained from this study, the compost produced is stable based on the parameters such as C/N ratio, soluble organic carbon, and NH4 +-N. The quality of the compost produced in the plant was at acceptable levels regarding to differentr regulations. As a result, the compost produced from MSW can be used as fertilizer in parks, gardens and agricultural lands.
| Copyright: | © IWWG International Waste Working Group | |
| Quelle: | Specialized Session D (Oktober 2007) | |
| Seiten: | 10 | |
| Preis inkl. MwSt.: | € 10,00 | |
| Autor: | M. Altinbas  E.B. Gencsoy D.I. Ciftci O.A. Arikan I. Demir | |
| Artikel weiterleiten | In den Warenkorb legen
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