The Different Metabolic Activity of Activated Sludge Samples Taken from Reversed A²/O Process and Conventional A²/O Process

Abstract:

The metabolic activity of sludge samples taken from two pilot scale activated sludge reactor was studied. The two reactors were of the same size and structure. One was operated according to the reversed A2/O process (R-reactor) and another was operated according to conventional A2/O process (C-reactor). The activities of dehydrogenase (DHA) and electron transport system (ETS) and the specific oxygen uptake rate (SOUR) of sludge taken from R-reactor were 34.98%, 22.44% and 12.70% higher than those of the sludge taken from C-reactor. As for the R-reactor, the sludge undergoes aerobic condition right after anaerobic experience. Compared to entering aerobic stage from anoxic stage (C-reactor), entering aerobic stage from anaerobic stage can significantly enhance the activity of microbes, accelerate the decomposition of organics and improve the SOUR of the sludge.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 1476-1480
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.1476
• Online since: January 2011
• Authors: Xing Sheng Kang, Chang Qing Liu, Li Zhu Huang, Gong Fa Chang, Zhong Qiao, Bo Zhang, Xue Jun Bi
• Keywords: Conventional A²/O Process, INT-ETS Activity, Reversed A²/O Process, Sour, TTC-DHA Activity

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