سیما فکری - Department of Environmental Engineering, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
ابراهیم فتائی - Department of Environmental Engineering, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
علی اکبر ایمانی - Department of Agriculture, Ardabil Branch, Islamic Azad University, Ardabil, Iran.

Background: This study investigated the effect of waste separation from the source on the chemical characteristics of wet waste in Ardabil city. Methods: A sample of wet waste material was collected from each district of the ۳rd and ۴th regions of Ardabil city in order to analyze of Cd, Pb, pH, EC, TDS, OC, K, Ntotale, and P values with standard methods. Results: The results showed that the average concentration of Pb was determined to be ۱۰۲ mg/kg in area ۳ and ۱۲۵ mg/kg in area ۴. Also, the average concentration of Cd in municipal waste compost samples was ۳.۱۳۹ mg/kg and ۴.۲۱ mg/kg in regions ۳ and ۴. The percentage of nitrogen (N) in both managed samples of regions ۳ and ۴ was ۰.۳۲% and ۰.۱۸%. The average percentage of phosphorus (P) in unseparated and separated urban waste compost of region ۳ was ۰.۰۸۹% and ۰.۱۳%, respectively. In region ۴, the average percentage of P in managed municipal waste compost was ۰.۲۴% and in unmanaged was ۰.۲۰۱%. The concentration of potassium (K) in separated urban waste compost in areas ۳ and ۴ was found to be ۶۰.۲ ppm and ۳۹ ppm, respectively. Conclusion: According to the results, it can be said that the effect of management on the number of heavy metals in the waste was significant at the possible level of P > ۵%. Further, waste separation at the source systematically reduces the waste with heavy metals.

Municipal Waste Management, Chemical Characteristics, Compostable Organic Materials, Heavy Metals, Waste Segregation, خصوصیات شیمیایی, مواد آلی قابل کمپوست, فلزات سنگین, تفکیک زباله