PERFORMANCE EVALUATION OF EXTRINSIC FACTORS AFFECTING GRANULATION IN SEWAGE (original) (raw)

The up-flow anaerobic sludge blanket reactor (UASBR) has been used to effectively treat the variety of wastewaters. Decades of investigations and explorations in the field of anaerobic wastewater treatment have resulted in the noteworthy indications about the significance function of the sludge granules in biodegradation anaerobic process. It is understood that the performance of reactor depends on the formation of granules. An outline on the theory of up-flow anaerobic sludge blanket UASB reactor process as well as the main parts of the reactor is briefly explained in this paper. The aim of this paper is to investigate and assess the mechanisms of granules initiation and development of granules inside the UASB reactor. The factors reviewed are pH and alkalinity, temperature, nutrients, organic loading rate, cations and heavy metals.