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Integrated Anaerobic – Aerobic MBBR: A Novel Approach to High Strength Wastewater Treatment

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Anaerobic systems offer an attractive solution for wastewater treatment however require substantial capital investment and are prone to process upsets. To overcome these challenges, a new integrated anaerobic – aerobic technology based on moving bed media was developed to provide a small, cost effective and simple solution for a wide variety of wastewaters. The Dynamic ANaerobic Aerobic (DANA) system combines anaerobic and aerobic treatment in one reactor. DANA was successfully tested in an industrial pilot plant treating wastewater from a potato starch processing plant. The plant reached a Volumetric Loading Rate (VLR) and Surface Loading rate (SALR) in the anaerobic stage of up to 17 kg COD/m3/day and 38.4 g COD/m2/day, respectively. The overall COD removal was of 95%. The system showed an ability to work in flow velocities of up to 0.76 m/h. Load fluctuations and factory shutdowns did not cause major upsets to the system.

The pilot plant demonstrated the simplicity and ease of operation of the new DANA system.
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Keywords: Aerobic; Anaerobic; Biomass carriers; MBBR

Document Type: Research Article

Publication date: 2011-01-01

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