Performance and Microbial Community of Aerobic Granular Sludge Bioreactor

Abstract:

Aerobic granular sludge was cultivated from activated-sludge in sequencing batch reactor. The change of physical properties and the effect of treatment of organic substance and microbial community were studied in the process of the different influent organic loading rate. The results showed that the formation process of aerobic granulation was rapid but the granular sludge was not stable and existed a disintegration-reunion dynamic balance system. The value of MLSS descended from 5.12g/L to 1.03g/L. The removal efficiency of NH₄⁺-N decreased to 74.17% and total phosphorous (TP) removal efficiency maintained beyond 90% all the while. The COD_Cr removal was over 85% which higher than that of after adding in methanol, then reduced but had trend of rise to 31.89% at last. Microbial species in granulation were speculated by detecting polyhydroxyalkan- oates between granular sludge and activated sludge in the reactor. The results showed that microbial species of activated sludge are more diverse.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 405-410
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.405
• Online since: February 2014
• Authors: Xia Zhao, Ji Min Shen, Zhong Lin Chen*, Xiao Chun Wang
• Keywords: Decontamination Performance, Granular Sludge, Microbial Community, Sequencing Batch Reactor

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