Assessment of biogas use as an energy source from anaerobic digestion of brewery wastewater


Ince B., Ince O., Anderson G., Arayici S.

WATER AIR AND SOIL POLLUTION, cilt.126, ss.239-251, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 126
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1023/a:1005236731131
  • Dergi Adı: WATER AIR AND SOIL POLLUTION
  • Sayfa Sayıları: ss.239-251

Özet

Energy recovery from a crossflow ultrafiltration (UF) membrane unit employed in order to improve the performance of an anaerobic contact digester for the treatment of brewery wastewater was assessed. The performance of the pilot-scale anaerobic UF membrane system was studied for over 15 months. At steady-state conditions, an organic loading rate of 28.5 kg COD m(-3) d(-1), a hydraulic retention time of 4.2 days and overall COD and BOD removal efficiencies of 99% and almost 100% were achieved, respectively. Percent methane in biogas was found to be in a range of 67-79% with the corresponding methane yield of 0.28-0.35 m(3) CH4 kg(-1) CODremoved. The potential energy recovery from the system treating brewery wastewater at an OLR of 28.5 kg COD m(-3) d(-1) was 87 MJ d(-1) which would enable to maintain all energy requirements of the feed pump, mixing and heating of the reactor contents. In addition to this, 71% of the energy requirement for recirculating the reactor content through the membranes would also be recovered.