TECHNICAL PAPERS
Jun 1, 1984

Rainfall and Overland Flow Performance

Publication: Journal of Environmental Engineering
Volume 110, Issue 3

Abstract

Rainfall was found to affect the performance of an overland flow land treatment system used for the treatment of municipal wastewater. However, effluent BOD5 concentrations during rainfall events were only slightly higher than values observed during normal operation without rainfall and were well below the 30mg/L level. Effluent suspended solids concentrations during rainfall events were generally greater than 30mg/L, but solids were mostly inorganic and the observed concentrations were generally less than in rainfall runoff from control slopes that did not receive wastewater. Mass discharges of BOD5 and suspended solids increased significantly above normal operating values, and the increase was directly correlated with rainfall intensity and duration.

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References

1.
Peters, R. E., Lee, C. R., and Bates, D., “Field Investigation of Overland Flow Treatment of Municipal Lagoon Effluent,” Technical Report EL‐81‐9, Environmental Laboratory, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss., 1981.
2.
C. W. Thornthwaite Associates, “An Evaluation of Cannery Waste Disposal by Overland Flow Spray Irrigation,” Publications in Climatology, 22, No. 2, 1969.
3.
Bledsoe, B. E., “Developmental Research for Overland Flow Technology,” Proceedings of National Seminar on Overland Flow Technology for Municipal Wastewater, Dallas, Tex., 1980.
4.
Smith, R. G., and Schroeder, E. D., “Demonstration of the Overland Flow Process for the Treatment of Municipal Wastewater—Phase I Pilot Studies,” Report to California State Water Resources Control Board, Dept. of Civil Engineering, University of California, Davis, 1980.
5.
Smith, R. G., and Schroeder, E. D., “Demonstration of the Overland Flow Process for the Treatment of Municipal Wastewater—Phase II Field Studies,” Report to California State Water Resources Control Board, Dept. of Civil Engineering, University of California, Davis, 1982.
6.
Smith, R. G., and Schroeder, E. D., “Physical Design of Overland Flow Systems,” Journal Water Pollution Control Federation, Vol. 55, No. 3, 1983, pp. 255–260.
7.
“Rainfall Analysis for Drainage Design, Vol. II: Long‐duration Precipitation Frequency Data,” State of California, Dept. of Water Resources, Bulletin No. 195, 1976.
8.
“Rainfall Analysis for Drainage Design, Vol. III: Intensity‐Duration‐Frequency Curves,” State of California, Dept. of Water Resources, Bulletin No. 195, 1976.
9.
Standard Methods for the Examination of Water and Wastewater, 15th Edition. American Public Health Association, American Water Works Association, and Water Pollution Control Federation, Washington, D.C., 1981.
10.
Figueiredo, R. F., “Effect of Rainfall on the Performance of the Overland Flow Wastewater Treatment Process,” thesis presented to the University of California at Davis, in 1981, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
11.
Smith, R. G., “Development of a Predictive Model to Describe the Removal of Organic Material with the Overland Flow Process,” Environmental Progress, Vol. 1, No. 3, 1982, pp. 195–205.

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Go to Journal of Environmental Engineering
Journal of Environmental Engineering
Volume 110Issue 3June 1984
Pages: 678 - 694

History

Published online: Jun 1, 1984
Published in print: Jun 1984

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Authors

Affiliations

Roberto F. de Figueiredo
Asst. Prof. of Hydr., Limeira, Brazil
Robert G. Smith
Assoc. Development Engr., Univ. of California, Davis, Calif.
Edward D. Schroeder, M. ASCE
Prof. of Civ. Engrg., Univ. of California, Davis, Calif.

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