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PARTICLE-ASSOCIATED MICROORGANISMS IN STORMWATER RUNOFF
Citation:
Borst*, M AND A Selvakumar*. PARTICLE-ASSOCIATED MICROORGANISMS IN STORMWATER RUNOFF. Henze, M. (ed.), Submitted to: WATER RESEARCH. Elsevier Science Ltd, New York, NY, 37(1):215-223, (2003).
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Description:
This research investigated the effects of blending and chemical addition before analysis of the concentration of microorganisms in stormwater runoff to determine whether clumped or particle-associated organisms play a significant role. All organisms, except for Escherichia coli, showed an increase in the measured concentration after blending samples at 22,000 rpm with or without the chemical mixture (Zwittergent 3-12, ethyleneglycol-bis(B amino-ethyl ether)-N,N'-tetra acetic acid (EGTA), and Tris Buffer). Other than fecal streptococci, the organism concentrations decreased with the addition of the Camper's solution in both blended and unblended samples before analyses. There was a statistically significant interaction between the effects of Camper's solution and the effects of blending for all the organisms tested, except for total coliform. Blending did not alter the particle size distribution significantly. The results show no correlation between increased total coliform, fecal coliform, and fecal streptococcus concentrations and particle size.