Water sacristy is one of the main risks that the MENA region's nations are dealing with. Climate change, raining temperatures, etc. are the key contributors to this problem. Because of this, treating wastewater and reusing it in some fields like agriculture, industry, and groundwater augmentation is one way to lessen the demand for fresh water. However, wastewater treatment facilities are regarded as a source of GHG emissions. Generating energy with electricity will produce GHG emissions. For this reason, alternative solutions are suggested, such as generating energy utilizing solar power or gravity rather than electrical pumps.

The decarbonization of WWTPs has emerged as a crucial goal for achieving sustainable resource recovery as global efforts to combat climate change step up. All things considered, the decarbonization of WWTPs offers a tremendous potential to turn these historically energy-intensive buildings into sustainable and resource-efficient centres. WWTPs may promote the shift to a more sustainable and resilient water infrastructure while also helping to mitigate the effects of global climate change from conventional treatment to decarbonized treatment.

Implementing a range of strategies can be employed to lower carbon emissions, including reducing pump usage, utilizing solar energy, selecting alternative chemicals, and incorporating recyclable materials. The application of carbon management scenarios is expected to lead to a decrease of 7.56E+03 CO2 equivalent emissions for the MBR plant, a reduction of -1.27E+04 CO2 equivalent emissions for the SBR plants (indicating a decrease), and a decrease of -9.49 CO2 equivalent emissions for the CW (constructed wetland).