Performance Characteristics of a Low Sludge Bioreactor for Wastewater Treatment

Abstract

An immobilized microbial cell system was developed and tested for the treatment of industrial wastewater. A consortium of selected aerobic microorganisms was immobilized onto several different support matrices in a packed bed reactor configuration and operated in a continuous process mode. Comparison of the support matrices showed only small differences in treatment efficiency, but significant differences in sludge production and process stability. Porous polymer supports were highly resistant to feedstream upsets and produced 80% lower sludge solids as compared with non-porous supports. These results were seen at both the benchtop and pilot plant scale for treatment of complex industrial waste streams. This technology was applied, in preliminary experiments, to the treatment of a model waste stream simulating wastewater from a Controlled Ecological Life-Support System (CELSS).

Keywords

wastewater treatment biological immobilized microorganisms biofilm supports water recycling.

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References

Characklis, W.G. & Marshall, K.C. (1990), Biofilms, p. 671. New York: Wiley-Interscience.

Chladek, E. & Marano, R.S. (1984), Use of bonded phase silica sorbents for the sampling of priority pollutants in wastewaters, Journal of Chromatographic Science, 22, 313.

Franson, M. A. (ed.) (1985a), Standard Methods for the Examination of Water and Wastewater, p. 560. Washington, D.C.: American Public Health Association.

Franson, M. A. (ed.) (1985b), Standard Methods for the Examination of Water and Wastewater, p. 96. Washington, D.C.: American Public Health Association.

Franson, M. A. (ed.) (1985c), Standard Methods for the Examination of Water and Wastewater, p. 382. Washington, D.C.: American Public Health Association.

Jirka, A.M. & Carter, M.J. (1975), Micro semi-automated analysis of surface wastewaters for chemical oxygen demand, Analytical Chemistry, 47, 1397.

Leach, C.S. (1983), Medical Results from STS 1-4: analysis of body fluids, Aviation, Space and Environmental Medicine, 54, S50-S54.

Schubert, F.H. , Wynveen, R.A. & Quattrone, P.D. (1984), Advanced regenerative environmental control and life support systems: air and water regeneration, Advances in Space Research, 4, 29.

Sodell, J.A. & Seviour, R.J. (1990), Microbiology of foaming in activated sludge plants , Journal of Applied Bacteriology, 69, 145.