• Title/Summary/Keyword: Rhodopseudomonas palustris KK14

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Optimization for Small-scale Process of Swine Wastewater Treatment Using Rhodopseudomonas palustris KK14 (Rhodopseudomonas palustris KK14를 이용한 소규모 돈분폐수처리공정의 최적화)

  • Kim, Han-Soo;Oh, Chun-Hyun;Kim, Hyuk-Il;Cho, Hong-Yon;Yang, Han-Chul
    • Applied Biological Chemistry
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    • v.37 no.4
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    • pp.303-309
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    • 1994
  • 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.

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Optimal Conditions for Treatment of Swine Wastewater using Rhodopseudomonas palustris KK14 (Rhodopseudomonas palustris KK14를 이용한 돈분폐수처리의 최적조건 검토)

  • Kim, Han-Soo;Lee, Tae-Kyung;Kim, Hyuk-Il;Cho, Hong-Yon;Yang, Han-Chul
    • Applied Biological Chemistry
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    • v.37 no.4
    • /
    • pp.295-302
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    • 1994
  • 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.

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