عنوان مقاله [English]
شماره 50- سال 1383 آب و فاضلاب This paper reviews the recent advances in the development of ABR, which is one of the new types of anaerobic reactors capable of handling different kinds of industrial and municipal wastewaters. This reactor consists of some compartments in which environmental conditions such as pH and temperature or toxic material are stabilized in first compartment. Therefore, methanogenic bacteria that are very sensitive to environmental conditions can grow easily in the next compartment. An important property of this reactor is the low hydraulic retention time (HRT) of wastewater, that reduces the reactor volume and increases solid retention time (SRT). Also, the reactor is more stable to hydraulic and organic load shocks and there is no need to gas-solid separation devices. There is indeed, ability to separation of methanogenic and acidogenic phases. Economical studies show that these systems are also cost effective.The ABR reactor has shown good performance in the treatment of low strength and low temperature wastewater and those containing sulfate.