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2009•Journal of Lanzhou University of TechnologyRequires access

Cultivation of aerobic granular sludge in SBR reactor and its decontamination capability

Yang Guan

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Abstract

Taking the fibrous activated sludge as seeding sludge,aerobic granular sludge was successfully cultivated in sequencing batch reactor(SBR) fed with synthetic wastewater.After the SBR running for 7 days,part of the sludge was granulated and after it running for 20 days,most of the granular sludge formed in a stable state.It was demonstrated by the investigation that the stabled aerobic granular sludge had an average diameter of 5—6 mm and a sedimentation rate of 29—72 m/h.The average removal rate of the COD was 92.5%,that of the NH3—N amounted to 75.5%,and that of the TP was 95%,showing that the aerobic granular sludge had a good decontamination capability.

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What this paper is about

Taking the fibrous activated sludge as seeding sludge,aerobic granular sludge was successfully cultivated in sequencing batch reactor(SBR) fed with synthetic wastewater.After the SBR running for 7 days,part of the sludge was granulated and after it running for 20 days,most of the granular sludge formed in a stable state.It was demonstrated by the investigation that the stabled aerobic granular sludge had an average diameter of 5—6 mm and a sedimentation rate of 29—72 m/h.The average removal rate of the COD was 92.5%,that of the NH3—N amounted to 75.5%,and that of the TP was 95%,showing that the aerobic granular sludge had a good decontamination capability.

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Available abstract

Taking the fibrous activated sludge as seeding sludge,aerobic granular sludge was successfully cultivated in sequencing batch reactor(SBR) fed with synthetic wastewater.After the SBR running for 7 days,part of the sludge was granulated and after it running for 20 days,most of the granular sludge formed in a stable state.It was demonstrated by the investigation that the stabled aerobic granular sludge had an average diameter of 5—6 mm and a sedimentation rate of 29—72 m/h.The average removal rate of the COD was 92.5%,that of the NH3—N amounted to 75.5%,and that of the TP was 95%,showing that the aerobic granular sludge had a good decontamination capability.

Key concepts: Sequencing batch reactor, Human decontamination, Pulp and paper industry, Wastewater, Chemistry, Activated sludge, Waste management, Sewage treatment

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