تاريخ مجلس الدراسات العليا

2023-02-05

اسم الطالب

الين فوزي البطوش

ملخص الرسالة

This study aims to investigate the techno-economic feasibility of composting as a sustainable management approach of sewage sludge in Jordan. Organic waste management poses a big challenge for all countries around the world; due to the continuous increase of population. One of the main types of organic waste is sewage sludge that is generated from wastewater treatment plants. Insufficient management of sewage sludge through incineration, disposal in open lagoons, and landfilling is considered a direct threat to both people's health and the environment. Jordan is a developing country with limited natural resources and a multitude of environmental challenges such as water scarcity and waste generation. Due to the recent increase in population as a result of forced migration from neighboring countries, the waste management challenges have increased. As-Samra plant is the largest wastewater treatment plant in Jordan with annual average flows of 364,800 m3/day while the average annual sludge is estimated at 80,000 - 100,000 ton which is mostly disposed in open lagoons. In this study, the techno-economic assessment of composting in Jordan was conducted assuming an annual quantity of 20,000 tons of sewage sludge from As-Samra plant. A pilot study was carried out using three reactors and under three different experimental setups by varying the sludge mixing ratio. It was found that final compost satisfied class B requirements according to the Jordanian Standard 1145: 2016, while most parameters satisfied class A requirement. The estimated capital and annual operating expenses of the proposed composting facility were 1,084,233.60 JD and 2,008,236.26 JD, respectively, and the annual expected production of compost is 12,000 tons yield an annual revenue of JD 2,880,000. The economic feasibility analysis of the project indicated that the project is economically feasible with a 40 % rate of return and a payback period of 2.6 years. It was also concluded that composting will reduce the net greenhouse gas emissions by 475,000 tCO2-eq over the 15 years of project life.