D. Harrison* , T.Wilson**, M.Dawson***, S.Rafique*** and T.Firmansyah***
*Monsal,** Earth Tech, ***BHR Group Limited,
The paper outlines a joint US and UK project to review the anaerobic digestion plant No. 1 for the Orange County Sanitation District, California. The study, investigating all aspects of the plant, thickening, pumping, anaerobic digester heating and mixing and gas distribution, has drawn on fundamental rheological analysis of sludges along with scale and computational mixing models to predict the effect on the digesters of increasing feed dry solids from 4% to 9%.
KEYWORDS: Digester Refurbishment, Rheology, Mixing, Pumping, Heating, CFD, Scale Modelling
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