TREATMENT OF SUGAR MANUFACTURING INDUSTRY WASTEWATER BY UPFLOW ANAEROBIC FIXED BED REACTOR AT PRECISE TEMPERATURE
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Abstract
Sugar manufacturing effluent was treated in an anaerobic fixed bed reactor seeded
with nongranular anaerobically digested sewage sludge. The ambient room temperature
during the study period was between 28-37 oC. Successful reactor starts with granulation
was achieved within 90 days of operation. The reactor was started with an OLR of
0.031kgCOD/m3/day and was loaded up to the minimum COD 2240 mg/l. The
maximum % COD removal efficiency of 86% for the sugar wastewater at 3.0 days
Hydraulic Retention Time with an influent COD concentration of 3960 mg/l was
obtained. The VFA concentration gradually decreased from 54mg/l at 3.00 days HRT
and at 24mg/l at 0.6 days HRT. The VFA concentration was decreased drastically with
increase the HRT. The VSS ranges from 98mg/l to 165mg/l at 0.6day to 3.0days Hydraulic
Retention Time. Under steady state conditions the biomass concentration was
progressively increased from 98mg/l to 165mg/l to increases the HRT.
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