Analyzing the Qualitative Characteristics of Compost and Bio-compost in Zahedan City

Nowadays dealing with quality and quantity of urban solid wastes and recycling and separating materials as well as reusing organic wastes materials in order to generating compost and bio-compost are the most important issues in urban solid wastes management all around the world. With this in mind, quality enhancement of compost and bio-compost produced from urban solid wastes is one of major concern.In the context of a research, physicochemical characteristics of compost and bio-compost of Zahedan city are analyzed. Compost and bio-compost produced in summer and winter of 1385 are collected and utilized as samples. As the outcomes of this research illustrated, concentration of heavy metals such as cadmium, copper and zinc are not in proper levels and humidity percent of fertilizers are below the normal limit due to evaporation and high temperature of summer season. In contrast, concentration of nutrients such as nitrogen, phosphor and potassium are normal. In general, keeping compost andbio-compost in desired quality requires more protection especially in high temperature seasons.