Acclimation of Granules when Treating Actual Coking Wastewater: Continuous versus Intermittent Oxygenation

Abstract:

Coupled anaerobicaerobic granular bio-film reactor was employed to acclimatize the granules when treating actual coking wastewater. Two oxygenation methods (i.e. A and B) were employed. For method A, dissolved O₂ was supplied to the reactor A (RA) through a continuous oxygenation way of 800-15000mlmin^-1. And for method B, dissolved O₂ of 800-15000mlmin^-1 (18-12 times at 20-60min intervals, 1 h each time) was supplied to the reactor B (RB). The experimental results showed that it took only about 6 months for granules acclimation using actual coking wastewater. With inorganic carbon (NaHCO₃) addition, both oxygenation methods could run well when acclimatizing the granules. However, method A could have comparatively high and stable operation effect. And the continuous oxygenation way was more suitable for the acclimation of the granules when treating actual coking wastewater than the intermittent oxygenation way.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 182-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.182
• Online since: September 2013
• Authors: Chun Juan Dong, Hong Yu Lu, Ya Quan Sun
• Keywords: Acclimation, Actual Coking Wastewater, Continuous Oxygenation, Granules, Inorganic Carbon Addition, Intermittent Oxygenation

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