Ali Hosseinzadeh - College of Engineering, University of Tehran, Tehran, Iran.
Mir Amir Mohammad Reshadi - Ecohydrology Research Group, Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON, Canada.
Morteza Nazaripour - Department of Civil and Environmental Engineering and Construction, University of Nevada, Las Vegas, Las Vegas, NV, USA.
Masomeh Rezaei - School of Environment, Azad University of Tehran, Tehran, Iran.

Background: Solid waste management is one of the important aspects of the hospital management.Methods: In this study, ۸ privative hospitals in Tehran were studied on the quantity and composition of medical solid waste. For this purpose, a checklist was used through interviews with hospital waste management staff as well as hospital waste generation information. The annual average of obtained data were analyzed.Results: The results showed that in the studied privative hospitals the generation of solid waste were ۲۴ to ۱۰۹۱ kg/day. The average medical waste generation in the studied privative hospitals was ۴ kg/bed/day equal to ۵.۰۹ kg/patient/day. Common waste accounted for ۷۰.۷۳% of total hospital solid waste, while infectious and sharp waste accounted for ۳۱.۰۴% of the hospital solid waste. Infectious wastes were disinfected using autoclave in all hospitals.Conclusion: Segregation of infectious waste from hospital waste mass reduces the environmental and health risk of hospital waste and reduces the cost of waste management in private hospitals.

Waste Management, Hospital solid waste, Infectious waste, Chemical and pharmacy waste