TY  - SER
AU  - Gnanadipathy,Anil
AU  - Chongrak Polprasert,
AU  - Verink,Johan
AU  - Harada,Hideki
ED  - Deutscher Akademischer Austauschdienst (German Academic Exchange Service),
TI  - Effects of inoculum sources on UASB reactors treating a low strength wastewater
T2  - Thesis
PY  - 1991///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Sewage
KW  - Purification
KW  - Activated sludge process
N1  - A thesis submitted in partial fulfillment of the requirements for the degree of  Master of Engineering; Thesis (M.Eng.) - Asian Institute of Technology, 1991
N2  - Laboratory scale experiments were carried out to study the feasibility of  employing upflow anaerobk sludge blanket (UASB) reactors to treat domestic and  relatively low strength wastewater. Four 30- 1 UASB reactors, each with a 0.15 m  inner diameter and 2m height, were used in this study which was conducted at an  average ambient temperature of 30°C. Three reactors were inoculated with different  types of seed sludge, namely: sludge from a facultative waste stabilization pond,  anaerobically digested sewage sludge, and anaerobic sludge from a distillery  wastewater treatment plant. The fourth reactor was started without inoculum and  was studied for possible self inoculation. The AIT wastewater was mixed with a  stock glucose solution to increase the influent COD concentrations to about 600  mg/l.  All four reactors were started with a hydraulic retention time (HRT) of 24 h  and this HRT was later reduced to 12, 6 and 3 h, consecutively, corresponding to  organic loading rates (OLR) of 0.6, 1. 2, 2.4 and 4.8 kg COD/(m3.d), respectively.  After about 2 months of operation, all four reactors were able to remove approximately  90% of con supplied. Scanning electron microscopic (SEM) examination of the sludge  found the presence of Methanothrix bacteria to be predominant. Granulation process  was not complete after 130 days of reactor operation; flocculent sludge was observed  in the reactors. The experimental results obtained have suggested a technical feasibility of  employing UASB reactors to treat domestic wastewaters
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B17410
ER  -