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Результаты 181-190 из 207
Preliminary investigational requirements-petrochemical and refinery waste treatment facilities
1971
Jewell, William | Ford, Davis L.
Application of rotating disc process to municipal wastewater treatment | Rotating disc process
1971
Antonie, Ronald L. | Koehler, Franklin J.
A prototype package plant incorporating the rotating disc wastewater treatment process was tested on municipal wastewater at the Village of Pewaukee, Wisconsin, to evaluate its treatment capabilities and establish guidelines for operation and testing of a full-scale rotating disc demonstration plant soon to be put into operation at Pewaukee. The package plant included a rotating bucket feed mechanism, ninety-one 1.75 meter diameter discs divided into two stages, and a secondary clarifier with a sludge-removal mechanism. Variables tested included hydraulic loading, rotational disc speed, sludge recycle, and wastewater treatment as it varied with climatic conditions.
Показать больше [+] Меньше [-]Removal of nitrogen from tile drainage
1971
Livestock waste disposal and water pollution control
1971
Hansen, Ralph W. (Ralph Waldo)
Feasibility studies of applications of catalytic oxidation in wastewater
1971
Chen, Juh Wah | Smith, Gerald Vinton
A research project to identify by remote sensing particulate size and distribution for air pollution assessment
1971
Fuller, C. E.
Techniques to reduce nitrogen in drainage effluent during transport
1971
Effect of geographical location on cooling pond requirements and performance
1971
Thackston, Edward L. | Parker, Frank L.
The energy budget approach to cooling ponds has been outlined and applied to cooling ponds. Monthly average weather data from 88 stations throughout the U.S. were used to calculate equilibrium temperatures, heat exchange coefficients, and amount of cooling in various sized ponds receiving the effluent from a standard power plant of 1000-mw capacity, both for average and extreme weater conditions. The data for each station is shown on a chart, and the variation of these results across the U S. is depicted by a series of 28 maps of the U.S. with contours connecting equal values of the parameters. The results may also be used to estimate cooling pond performance for other sized power plants. The maps disclose variations across the U.S., on a given date, of up to 55°F in equilibrium temperature, up to 100% difference in heat exchange coefficients, up to 50% difference in heat lost from a given sized pond, and up to 200% difference in the size of a pond necessary to produce an equal cooling effect.
Показать больше [+] Меньше [-]Combined treatment of domestic and industrial wastes by activated sludge
1971
