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| Effect of preservation temperature and time on ANAMMOX sludge activity |
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Abstract Variation of the activity of the ANAMMOX bacteria and its recovery were investigated by preserving the ANAMMOX sludge under different temperature and time. The preserving temperature and time had obvious effect on the activity of the ANAMMOX bacteria. The effect of normal temperature (15±2)℃ and low temperature (5±2)℃ on the activity was little, the activity sharply decreased, or even lost, under moderate temperature (30±2)℃ and freezing (-20±2)℃ temperature. The rapid reduction of the activity was observed before 30d, and then it kept constant relatively until the end. According to damped exponential model, the damped exponential was 0.0324 under normal temperature, indicating that it was less than that under other temperatures. The paper also lists preserving ways according to the impact of the preserving temperature and time, to make sure the sludge activity recovery in very short time.
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Received: 12 May 2010
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