Journal of Water and Environment Technology
Online ISSN : 1348-2165
ISSN-L : 1348-2165
Original Papers
Formation of Aerobic Granular Sludge in a Continuous-Flow Reactor - Control Strategy for the Selection of Well-Settling Granular Sludge -
Naohiro KISHIDAAtsushi KONOYutaka YAMASHITASatoshi TSUNEDA
Author information
JOURNAL FREE ACCESS

2010 Volume 8 Issue 3 Pages 251-258

Details
Abstract

In this study, the formation characteristics of aerobic granular sludge in a continuous-flow reactor were investigated under several experimental conditions. Both surface loading rate (equal to liquid linear velocity at a sludge settling zone) and aeration rate strongly affected the selection of well-settling sludge in the same manner as sludge settling time in a sequencing batch reactor. By setting and controlling adequate surface loading and aeration rates, small particles were effectively washed out, and well-settling sludge selectively remained in the reactor. As a result, aerobic granular sludge was effectively formed. On the other hand, feeding pattern, i.e., continuous and intermittent feeding, did not affect the aerobic granulation when completely inorganic wastewater was fed. These findings will contribute to the dissemination of aerobic granular sludge technology because the information on the formation of aerobic granular sludge in a continuous-flow reactor is limited.

Content from these authors
© 2010 Japan Society on Water Environment
Previous article Next article
feedback
Top