Notice of RetractionHydrolytic and acidification efficiency of excess sludge in different temperatures

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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By the intermittent experiment, we studied the effects of temperatures on process of hydrolysis and acidification of excess sludge. The results showed that at the temperature of 25°C, 30°C, 35°C and 40°C, the maximum of SCOD reached 382 mg/L, 432 mg/L, 622.51 mg/L and 1453.96 mg/L, and the maximum of hydrolysis efficiency reached 1.03%, 1.33%, 2.14% and 6.28%. The settlement performance increased about 0.50%, 1.00%, 1.80% and 2.40% than the initial value. At the temperature of 35°C, the TF reached the maximum of 19.5011 mg TF/gTSS (h). We can see the activity of micro-organisms was the greatest at this time.