Optimization for Small-scale Process of Swine Wastewater Treatment Using Rhodopseudomonas palustris KK14

Rhodopseudomonas palustris KK14를 이용한 소규모 돈분폐수처리공정의 최적화

  • Kim, Han-Soo (Department of Food Technology, Korea University) ;
  • Oh, Chun-Hyun (Department of Food Technology, 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) ;
  • 오준현 (고려대학교 식품공학과) ;
  • 김혁일 (계명대학교 식품가공학과) ;
  • 조홍연 (고려대학교 식품생명공학과) ;
  • 양한철 (고려대학교 식품공학과)
  • Published : 1994.08.31

Abstract

To develop the treatment process of swine wastewater using Rhodopseudomonas palustris KK14 with high utilizable ability of organic acids, some operating conditions were investigated and optimized in flask-scale and laboratory-scale reactors. The optimal operating conditions in photosynthetic bacteria (PSB) reactor of semi-continuous type were obtained at HRT 6 day, 5% (v/v/day) seeding rate of PSB sludge and 10% (v/v/day) returning rate of PSB return sludge. Under the above operating condition, COD level of the wastewater (initial COD: 10 g/l) was reduced to about 1.7 g/l after 4 days treatment and MLSS was held constant at $4{\sim}5\;g$ per liter. In laboratory-scale process consisted of 5.2 l anaearobic digestion reactor and 15 l PSB reactor, the total removal rates of COD and BOD were increased to 95% and 96% by the continuous operation for 5.36 days, respectively, showing $3kg\;COD/m^3/day$ COD loading rate and 1.1 Kg COD/Kg MLSS/day sludge loading rate in PSB reactor. The offensive odor was considerably removed through the treatment process of swine wastewater.