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DOI : ,    Vol.2, No.3, 69 ~ 81, 1994
Title
Articles / A Study on Sludge Settleability according to the Anaerobic Retention Time and Compartment in Anaerobic-Oxic Process
이성기Seong Key Lee
Abstract
The effects of anaerobic conditions on sludge settleability in Anaerobic-Oxic(AO) Process have been studied. Ten systems with different anaerobic configurations and various anaerobic retention time were operated. It has been observed that the growth of some filamentous organisms was suppressed under three-compartment anaerobic cascades as results of more soluble COD reduction and substrate gradient in anaerobic zone. It has been observed that anaerobic retention time should be long enough to reduce soluble COD to penetrate into aerobic zone. Longer anaerobic retention time such as 3 and 5 hours resulted in good settleability of sludge. In those systems without anaerobic cascade, severe filamentous bulking took place, even though the anaerobic retention time were similar to those of cascade systems.
Key Words
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