چكيده لاتين :
This paper presents the findings of the study on treatment of domestic wastewater using a laboratory
scale Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor. The reactor with a working volume of 5.9 Land
plastic cut rings as packing media was operated at varying Hydraulic Retention Time (HRT) for a period of 110 days.
While the COD removal varied from 75-86%, the BOD removal was in the range of 70-91 %. Methane content in the
biogas was 62(PLUS-MINUS)3%. VFA levels fluctuating between 100 and 186 mglL (as acetate) did not pose operational problems
such as souring of the reactor. During the treatment, nutrient levels exhibited an increasing trend. HUASB system could
be designed with very short HRT of 3.3 hours, which will reduce the treatment cost significantly. It appears to be a
promising alternative for the treatment of domestic wastewater in developing countries like India