| For discharge of sewage into the ocean, two parameters need to be estimated, namely the T90 time and the diffusion coefficient (K). The T 90 time is a measure of the rate of decay of the bacterial contained in the sewage, representing a 90% reduction from the initial value. The diffusion coefficient (K) is a measure of how fast a plume of sewage will grow or disperse once released into the ocean.; It was the goal of this study to determine acceptable ranges for both bacterial decay and dispersion that accurately depict conditions encountered in Newfoundland, and to determine generally if water temperature appears to have a important effect on the T90 value.; The values that were obtained estimated the rate of dispersion to be greater than anticipated. Weather and conditions of the test may have contributed to this. In addition, no significant difference was found between dispersion rates for both inshore and open ocean tests. (Abstract shortened by UMI.)... |
