Optimal Conditions for Treatment of Swine Wastewater using Rhodopseudomonas palustris KK14

Rhodopseudomonas palustris KK14를 이용한 돈분폐수처리의 최적조건 검토

  • Kim, Han-Soo (Department of Food Technology, Korea University) ;
  • Lee, Tae-Kyung (Institute of Biotechnology, Korea University) ;
  • Kim, Hyuk-Il (Department of Food Science and Technology, Kemyung University) ;
  • Cho, Hong-Yon (Department of Food and Biotechnology, Korea University) ;
  • Yang, Han-Chul (Department of Food Technology, Korea University)
  • 김한수 (고려대학교 식품공학과) ;
  • 이태경 (고려대학교 생물공학연구소) ;
  • 김혁일 (계명대학교 식품가공학과) ;
  • 조홍연 (고려대학교 식품생명공학과) ;
  • 양한철 (고려대학교 식품공학과)
  • Published : 1994.08.31

Abstract

For the development of biological wastewater treatment process using photosynthetic bacteria (PSB), photosynthetic sludge process consisted of anaerobic digestion and PSB reactor were designed for the treatment of swine wastewater and the optimal operating conditions in flask-scale were examined. Photosynthetic bacteria from soil, pond, rice field, ditch etc. were isolated in synthetic medium containing high amount of organic acids and finally isolated one strain KK14 which showed the most degradating ability of organic acids was selected for the treatment of swine wastewater. It was identified as Rhodopseudomonas palustris. In the anaerobic digestion stage, the maximum organic acid productivity was obtained at pH 5.0, $37^{\circ}C$, HRT 2 day and under anaerobic standing condition. The optimal operating conditions of PSB reactor for the treatment of swine wastewater were pH 7.0, $30^{\circ}C$ under 4,000 lux illumination, and optimal initial COD loading (kg COD/kg D. C. W of PSB) was 2 (20% v/v seeding) in the main purification stage. Maximum removal rate of COD reached 92% under the above optimal conditions for 5 days.