DOI QR코드

DOI QR Code

Bacterial Die-Off in Continuous River Water Flow System

  • Kong, Surk-Key (Department of Environmental Engineering, Joongbu University) ;
  • Toshiuki Nakajima (Department of Biology and Earth Sciences, Ehime University)
  • Published : 2003.08.01

Abstract

It was examined carefully that the bacterial die-off between Chlorella vulgaris and E. coli. W3110 was tested through adding TOC (total organic carbon) with the lab-scaled continuous river water flow system (CRWFS). Artificial synthetic wastewater was applied at two levels of organic carbon concentration; 1,335 mg/l in treatment type 1 and 267 mg/l in type 2. In both types, the population densities of Chlorella vulgaris were similar in a maximum 8.25 ${\times}$ 10$\^$6/ cells/ml (type 1) and 6.925 ${\times}$ 10$\^$6/ cells/ml (type 2). The maximum densities of E. coli. W3110 were 2.0 ${\times}$ 10$\^$8/ colony forming unit (CFU)/ml in type 1 and 3.9 ${\times}$ 10$\^$8/ CFU/ml in type 2. The densities increased for 11 days in type 1 and 4 days in type 2, then decreased rapidly till the 35th day, then slightly increased again. This trend was prominent in type 2. It implied that a wider range of nutrients was required in the growth of heterotrophic bacteria in type 2 than in type 1. We could not expect successful bacterial die-off if the wastewater retention time was not furnished sufficiently.

References

  1. J. Environ. Engng v.101 Nutrient transformation in mass cultrues of marine.algac Goldman,J.C.;J.H.Ryther
  2. J. Wat. Sci. Tech. v.14 Nutrients removal and recovery in a two-stage high rate algal wastewater treatment Shelef,G.
  3. J. Professors' Papers. Joongbu University v.7 Nutrients removal in aerobic high rate algae pond Kong,S.K.
  4. J. Water Research v.26 Effect of different factors on the die-off of fecal bacteria in a stabilization pond purification plant Fernandez,A.;C.Tejedor;A.Chordi https://doi.org/10.1016/0043-1354(92)90145-T
  5. J. Wat. Sci. Tech. v.26 Modeling coliform reduction in wastewater stabilization ponds Saqqar,M.M.;M.B.Pescod
  6. Wastewater Microbiology Bitton,G.
  7. J. Wat. Sci. Tech. v.26 Modeling caliform reduction in wastewater stabilization ponds Saqqar,M.M.;M.B.Pescod
  8. Biosorption of Heavy Metals Volesky,B.
  9. J. Biotechnology Progress v.12 Photo acclimation of Chlorella vulgaris to red light from light-emitting diodes leads to autospore release following each cellular division Lee,C.G.;B.O.Palson https://doi.org/10.1021/bp950084t
  10. J. Wat. Sci. Tech. v.25 no.2 Validation of computer models for high rate algal pond operation tor wastewater treatment using data from Mediterranean and Scottish pilot scale systems: implication for management in coastal regions Fallowfield,H.J.;F.Mesple;N.J.Martin;C.Casellas;J.Bontoux
  11. Microbial Ecology Ronald,A.;B.Richard
  12. J. Water Pollution Control Federation v.52 Bactericidal agents in wastewater lagoons and lagoon design Moeller,J.R.;J.Calkins
  13. J. Wat. Sci. Tech. v.26 The effect of sunlight on fecal coliforms: Implications for research and design Curtis,T.P.;D.D.Mara;S.S.Silva
  14. Baars J.K. Thermodynamcis of biological systhesis and growth in Advances in water pollution research Eckenfelder,W.W.
  15. Barrs J. K. Thermodynamics of biological synthesis and growth. In Advances in water pollution research McCarty,P.L.
  16. J. WPCF v.46 Thermodynamic analysis of a primary oxidation pond David,W.H.;D.P.Wilfred
  17. J. WPCF v.46 Thermodynamic analysis of a primary oxidation pond David,W.H.;D.P.Wilfed
  18. Biosorption of Heavy Metals Volesky,B.