Title :
Cause and Control of Baulking Sludge by Microthrix Parvicella in MUCT System
Author :
Yin, Jun ; Wang, Xiao-Ling ; Wu, Xiang-Hui ; Ye, Long
Author_Institution :
Sch. of Municipal & Environ. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
The cause and control of bulking in modified University of Cape Town (MUCT) system were investigated. The results were as follows: (1) Low temperature is the main cause of excessive filamentous bacteria growth, and dominant filamentous bacteria was Microthrix parvicella in the sludge; (2) Biological techniques such as reducing sludge retention time (SRT) and increasing temperature could decrease sludge volume index (SVI) and control bulking; (3) The removal efficiency of COD was constantly higher than 92.4%, and the removal efficiency of TP ranged between 87.4 and 98.0% during experiment, but percentage of TN removal decreased to about 42.2% due to used the lower SRT (6d) after 9 Nov 2006.
Keywords :
biochemistry; biological techniques; bioreactors; biothermics; microorganisms; sludge treatment; wastewater treatment; Microthrix parvicella; baulking sludge cause; baulking sludge control; biological techniques; dominant filamentous bacteria; excessive filamentous bacteria growth; sludge retention time; sludge volume index; Biological control systems; Civil engineering; Control systems; Effluents; Inductors; Microorganisms; Plants (biology); Sludge treatment; Temperature distribution; Wastewater treatment;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5162478
