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Biological sulphate reduction of acid mine drainage using primary sewage sludge in an upflow anaerobic sludge bed (uasb) reactor.
| Content Provider | CiteSeerX |
|---|---|
| Author | Poinapen, J. Ne, Ristow Mc, Wentzel Pd, Rose Ga, Ekama |
| Abstract | This paper describes a novel system for the biological sulphate reduction (BSR) of acid mine drainage (AMD) using primary sewage sludge (PSS) as substrate source in an upflow anaerobic sludge bed (UASB) reactor configuration. Two identical UASB reactors were operated, one (R1) at a temperature (T) of 35 oC and the other (R2) at a T of 20 oC. Both received PSS (2000 mgCOD/L) augmented with sulphate (1500 mgSO42-/L). The experimental results indicate that a high treatment efficiency was achieved in both reactors. R1 (T=35 oC) achieved more than 90 % sulphate reduction at a liquid hydraulic retention time (HRT) of 14 h. In this study, the effects of various operational parameters were also investigated. The effect of a biomass recycle stream from the top to the bottom of the sludge bed was found to initiate rapid BSR from the bottom of the bed. Profile tests showed that effective and immediate sulphate reduction was achieved as soon as the influent entered the reactor. From these results, it can be concluded that the UASB configuration using PSS as carbon source would be a viable method for the BSR of AMD. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Biomass Recycle Stream Immediate Sulphate Reduction Liquid Hydraulic Retention Time Profile Test Various Operational Parameter Substrate Source Acid Mine Drainage Viable Method Uasb Configuration Identical Uasb Reactor Sludge Bed Primary Sewage Sludge Novel System High Treatment Efficiency Reactor Configuration Rapid Bsr Sulphate Reduction Experimental Result Carbon Source Upflow Anaerobic Sludge Bed Biological Sulphate Reduction |
| Content Type | Text |
| Resource Type | Article |
