Evaluation of environmental performance of the Starclean composting machine in converting the wet wastes into compost
Subject Areas : Waste Management
Hamid
Abasalizadeh
1
(Chief Executive Officer of Setareh Arya Novin Aylin Company, Tehran, Iran.)
Arzhang
Fathi-Gerdelidani
2
(Ph.D., Soil Science, University of Tehran and soil. *(Corresponding Author))
Shahab
Khalaj
3
(M.Sc., Artificial Intelligence, Islamic Azad University, Safadasht Branch, Tehran.)
Siavash
Jalili Aramesh
4
(B.Sc., Industrial Engineering, Buein Zahra Technical University.)
Keywords: Source Separation of Waste, Starclean, Wet waste, compost, Composting Machine,
Abstract :
Background and Objective: Ideal management of urban, agricultural, and industrial organic wastes is important due to high daily production of them, particularly from environmental and hygienic perspective. The aim of this research was to evaluate the environmental performance of StarClean composting machine in converting wet wastes at origin to compost fertilizer and chemical and microbial analysis of the produced fertilizer and comparing it with reference national standards.Material and Methodology: One composting machine with a capacity to convert 5-10 kg wet wastes was installed in region 22 of Tehran municipality, then Alicyclobacillus sendaiensis bacteria were added to the machine tank and wet wastes were strewed in it daily and after 24 hours, the produced compost was picked up. Afterwards, microbial and chemical characteristics of the compost were analyzed.Findings: Results showed that heavy metals concentration and Salmonella and Coliform fecal bacteria counts of the machine output compost were lower than permissible limits and completely passed the reference standards. Other chemical properties also were ideal which indicates the produced compost is a high quality organic fertilizer and its use can improve soil fertility.Discussion and Conclusion: the studied composting machine converts wet wastes to compost fertilizer with high quality in a short time without the production of leachate and an unpleasant odor. It also allows to complete separation of wet and dry wastes at source and production of compost fertilizer with high quality. Hence it is suggested to use this composting machine in places of wet waste generation.
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