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Influence of mechanical stirring on the rapid granulation of CANON sludge |
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Abstract Effect of different control modes on the granulation of the CANON sludge were studied with the aeration SBR reactor (R1) and aeration combined with mechanical stirring SBR reactor (R2). R2 granulation used 40 days, a third shorter than R1; the mean TN removal efficiency and volume loading of R2 was higher and more stable than R1, which was 83.07% and 0.26kgN/(m3·d), which confirmed the mechanical stirring will improve the particle growth rate and nitrogen removal performance. This research demonstrated that aeration combined with mechanical stirring was an efficient method to shorten the granulation time of the CANON sludge and achieve stable and high removal of TN.
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Received: 15 May 2014
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