Abstract
Denitrification performance is an important indicator of the denitrification process in wastewater treatment. A lateral experiment was carried out on the campus wastewater treatment plants (WWTPs) in East China University of Science and Technology (ECUST) by using a SBR process equipped with a hydrocyclone. The results showed that the hydrocyclone in the SBR process was able to break activated sludge (AS) flocs into smaller flocs because of the rotation and revolution. At the same time, organic carbon sources such as polysaccharides and proteins were released, which supplemented the carbon source of the biochemical pool and improved the denitrification performance. After hydrocyclone treatment, the denitrification performance of sludge flocs increased by more than 50%, and the denitrification rate increased by 20.39%. Under continuous operating conditions, the average denitrification performance increased by 6.43%.
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