In current work, Analytical Hierarchy Process (AHP) method is applied to select the ideal anaerobicwastewater treatment process. This strategy can be used for complex multi-criteria choice making toget perceptible outcomes. The distinctive anaerobic procedures utilized in Iranian industrial domainsincluded Up-flow Anaerobic Baffled Reactor (ABR), Up-flow Anaerobic Sludge Blanket (UASB),Up-flow Anaerobic Fixed Bed Reactor (UAFB), Anaerobic Lagoons (AL) and Contact process (CP).The procedures are ...