The plan of this study is determining the best option for solid waste treatment in the Diwaniyah city – Iraq. where the comparison between two common options in solid waste treatments, the first option is the incineration process with energy recovery for all waste components and the second option is “reusing inorganic and recycling organic compost” (RIROC). In this study, we depended numbers of criteria that included the environmental impact, the cost Investment, operation and maintenance costs, financial benefits, work experience, stabilization, quantities of by-product waste, and city needs. Due to the nature of wastes which contain high organic component and also high moisture content which decreases the low heating value of MSW where it is (6000 - 7000) KJ / Kg. According to these parameters and the wastes properties, the second option (RIROC) was the suitable choice due to the investment cost is less than the incineration option and the net profits are similar approximately where the net profits of the incineration and (RIROC) are 11888 $/day and 11597$/day respectively.