The new generation of anaerobic digestion systems provide a high level of performance under optimal conditions (~ 37°C). However, in practice many influents will be at lower temperatures - heating of digesters presents problems, particularly in developing countries where technical backup is limited. This paper reports on a study of the treatment of a low/medium strength apple juicing waste in an upflow anaerobic sludge blanket reactor (UASB) at temperatures Less than optimal (25°C and 30°C). Maximum loading rates of approximately 12 and 16 kg COD m−3 d−1 were attained at 25°C and 30°C, respectively, for Influent concentrations in the range 2500 to 5000 rag COD ℓ−1. The comparative treatment capacity is In accord with the reported temperature sensitivity of mesophilic anaerobic processes. Formation of pelletised (granular) sludge enabled high upflow velocities and low hydraulic retention times.
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Research Article| January 01 1987
Anaerobic Treatment of an Apple Processing Wastewater
P. L. Dold;
I. H. Palmer;
Water Sci Technol (1987) 19 (1-2): 237–247.
P. L. Dold, A. Sam-Soon, I. H. Palmer, G v. R. Marais; Anaerobic Treatment of an Apple Processing Wastewater. Water Sci Technol 1 January 1987; 19 (1-2): 237–247. doi: https://doi.org/10.2166/wst.1987.0205
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