Abstract
Limited studies were carried out to assess the impact of climate change on the performance of wastewater treatment plants (WWTPs). Therefore this study aims to assess the consequences of climate change on the central Irbid WWTP which is located in northern Jordan. For this purpose the statistical downscaling Model (SDSM) and the outputs of the HadCM3 global climate model were used to produce two climate change scenarios A2 and B2. The two scenarios cover the periods 2050-2065 and 2080-2099. These scenarios were used conjunction with a wastewater simulation model (STOAT) to assess the impact of climate change on the performance of the Central Irbid WWTP. The results revealed that the BOD removal will increase in summer season by about 6 mg/l for periods 2050-2065 and 2080-2099 under both Scenarios A2 and B2. For winter season it is expected that the BOD removal will be reduced up to 8 mg/l. On the other hand, the results indicated an improvement in COD removal up 6 mg/l in the summer season while in the winter it is expected to decree mg/l. The removal of TSS was slightly affected by the climate change
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