A Multi-stage Reversing flow Bioreactor (MRB) was developed by the Public Works Research Institute in 1986. It utilizes the symbiotic interaction between anaerobic bacteria (sulfate reducing bacteria) and microaerobic bacteria (Beggiatoa=filamentous sulfur oxidizing bacteria) for self-granulated pellet formation. A MRB Pilot plant for domestic wastewater treatment (design capacity was 225 m3/day) was constructed in 1988. After several modifications of the initial design, stable pellet formation and high performance were achieved.

This paper describes the results of the pilot plant operation.

Wastewater Treatment, Microaerobic, Bioreactor, Self-immobilization, Liquid-Solid Separation, Beggiatoa, Sulfate Reducing Bacteria
This content is only available as a PDF.
© IWA Publishing 1991
You do not currently have access to this content.