Aerobic granulation with brewery wastewater in a sequencing batch reactor

Bioresour Technol. 2007 Aug;98(11):2142-7. doi: 10.1016/j.biortech.2006.08.018. Epub 2006 Oct 27.

Abstract

Aerobic granular sludge was cultivated in a sequencing batch reactor fed with brewery wastewater. After nine-week operation, stable granules with sizes of 2-7 mm were obtained. With the granulation, the SVI value decreased from 87.5 to 32 mL/g. The granular sludge had an excellent settling ability with the settling velocity over 91 m/h. Aerobic granular sludge exhibited good performance in the organics and nitrogen removal from brewery wastewater. After granulation, high and stable removal efficiencies of 88.7% COD(t), 88.9% NH(4)(+)-N were achieved at the volumetric exchange ratio of 50% and cycle duration of 6h. The average COD(t) and COD(s) of the effluent were 212 and 134 mg/L, respectively, and the average effluent ammonium concentration was less than 14.4 mg/L. Nitrogen was removed due to nitrification and simultaneous denitrification in the inner core of granules.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteria, Aerobic / metabolism*
  • Bacteria, Aerobic / ultrastructure
  • Bioreactors*
  • Food Industry
  • Industrial Waste*
  • Nitrogen / chemistry
  • Nitrogen / metabolism
  • Organic Chemicals / chemistry
  • Organic Chemicals / metabolism
  • Sewage / chemistry
  • Water Pollutants, Chemical / chemistry
  • Water Pollutants, Chemical / metabolism*
  • Water Purification* / instrumentation

Substances

  • Industrial Waste
  • Organic Chemicals
  • Sewage
  • Water Pollutants, Chemical
  • Nitrogen