ABSTRACT
BIOLOGICAL SULPHATE REDUCTION USING PRIMARY SEWAGE SLUDGE
AS ENERGY SOURCE IN AN UPFLOW ANAEROBIC SLUDGE BED REACTOR
Since the economics of biological sulphate reduction (BSR) are driven by the economics of
the organic carbon source, the BioSURE® process has been developed as a low-cost
effective system where primary sewage sludge (PSS) is used as the energy source. This
research investigates the use of PSS for BSR in an upflow anaerobic sludge bed (UASB)
reactor in detail in order to exploit and further develop this novel technology. From the
analyses of the extensive experimental data gathered, a number of significant outcomes have
been accomplished, namely:
1. The capabilities and limitations of BSR with PSS in a UASB reactor configuration at 2
operating temperatures, 35 and 20 oC and at different organic and sulphate loading rates
have been established. UASB reactor R1 (at T=35 oC) fed a PSS COD/Sulphate ratio of
1.25 (1875 mgCOD/1500 mgSO4
2-) achieved more than 90% sulphate reduction when
operated at its lowest optimal hydraulic retention time (HRT) of 13.5h and sludge age of
18d. When fed 1800 mgSO4
2-/L (PSS COD/SO4
2- = 1.44), R1 achieved >92% sulphate
reduction at its lowest optimal HRT of 18h and bed sludge age of 21d. UASB R1 effluent
sulphate and unfiltered organic COD concentrations were 93% sulphate reduction at its lowest optimal
HRT of 20.4h and bed sludge age of 24d. R2 effluent sulphate and unfiltered organic
COD concentrations were
Poinapen, J (2021). Biological Sulphate Reduction Using Primary Sewage Sludge As Energy Source In An Upflow Anaerobic Sludge Bed Reactor. Afribary. Retrieved from https://afribary.com/works/biological-sulphate-reduction-using-primary-sewage-sludge-as-energy-source-in-an-upflow-anaerobic-sludge-bed-reactor
Poinapen, Johann "Biological Sulphate Reduction Using Primary Sewage Sludge As Energy Source In An Upflow Anaerobic Sludge Bed Reactor" Afribary. Afribary, 15 May. 2021, https://afribary.com/works/biological-sulphate-reduction-using-primary-sewage-sludge-as-energy-source-in-an-upflow-anaerobic-sludge-bed-reactor. Accessed 22 Nov. 2024.
Poinapen, Johann . "Biological Sulphate Reduction Using Primary Sewage Sludge As Energy Source In An Upflow Anaerobic Sludge Bed Reactor". Afribary, Afribary, 15 May. 2021. Web. 22 Nov. 2024. < https://afribary.com/works/biological-sulphate-reduction-using-primary-sewage-sludge-as-energy-source-in-an-upflow-anaerobic-sludge-bed-reactor >.
Poinapen, Johann . "Biological Sulphate Reduction Using Primary Sewage Sludge As Energy Source In An Upflow Anaerobic Sludge Bed Reactor" Afribary (2021). Accessed November 22, 2024. https://afribary.com/works/biological-sulphate-reduction-using-primary-sewage-sludge-as-energy-source-in-an-upflow-anaerobic-sludge-bed-reactor