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Abstract
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41 SL0.20 H-0.76, where K2 is the reaeration coefficient in base e units per day; MBAS is the methylene blue active substances concentration in milligrams per liter; SL is the water-surface slope in foot per foot; and H is the mean-flow depth in feet. Fourteen hydraulic, physical, and water-quality characteristics were regressed against 29 measured-reaeration coefficients for low-sloped (water surface slopes less than 0.002 foot per foot) streams in Massachusetts and New York. Reaeration coefficients measured from May 1985 to October 1988 ranged from 0.2 to 11.0 base e units per day for 29 low-sloped tracer studies. Concentration of methylene blue active substances is significant because it is thought to be an indicator of concentration of surfactants which could change the surface tension at the air-water interface.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Characteristics of low-slope streams that affect O2 transfer rates |
| ISBN | 0872628469 |
| Year Published | 1991 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Larger Work Title | Air-Water Mass Transfer |
| First page | 362 |
| Last page | 377 |
| Conference Title | 2nd International Symposium on Gas Transfer at Water Surfaces |
| Conference Location | Minneapolis, MN, USA |
| Conference Date | 11 September 1990 through 14 September 1990 |
| Google Analytic Metrics | Metrics page |