2011•Journal of Hunan Institute of EngineeringRequires access

The Cultivation and Application of Aerobic Granular Sludge in SBR

Song Yong

Abstract

Aerobic granular sludge is cultivated in the SBR reactor successfully.The average diameter is between 1.2~1.4mm.The characteristics and application of aerobic granular sludge are investigated.Following results have been obtained:Nitrate nitrogen value in the effluent is sustained in around 5mg and this shows the nitrification and denitrification reaches the equilibrium,at the same time,the removal rates of COD is more than 90%.Then the aerobic granular sludge is used to treat chemical plarmaceutical wastewater.The results show that the rate of degradation of ammonia nitrogen and COD are all quite low.Aerobic granular sludge is disintegrated and the effluent is turbid.

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Key concepts: Effluent, Simultaneous nitrification-denitrification, Nitrification, Pulp and paper industry, Wastewater, Chemistry, Denitrification, Nitrogen