Document Type

Thesis - Open Access

Award Date

1974

Degree Name

Master of Science (MS)

Department

Civil Engineering

Abstract

The declared objective of the Federal Water Pollution Control Act Amendments of 1972 is "to restore and maintain the chemical, physical, and biological integrity of the Nations waters. " A schedule of required treatment is also· promulgated that calls for the equivalent of secondary treatment by July 1, 1977 and the best practicable waste treatment by July 11, 1983 for all publicly owned treatment plants. This Act serves notice that many existing wastewater treatment plants will have to be upgraded to meet the new federal regulations required by the Act. This, coupled with the already questionable quality of lagoon effluent, indicates that some method of enhancing the quality of lagoon effluent may have to be devised. The Civil Engineering Department at South Dakota State University has been concerned with this problem and has conducted studies related to soil systems for lagoon effluent disposal. The quality of water seeped from sewage lagoons was studied by Druyvestein and Jensen of the Civil Engineering Department. Both investigators showed dramatic water quality improvements after the water had percolated through the soil. Jensen recommended that lagoon effluent be discharged to a soil system rather than directly to surface waters. It is hoped that infiltration basins can be used to enhance the quality of lagoon effluent because they may offer the same advantages of low first cost and ease of operation and maintenance as lagoons. The purpose of this study was to investigate the suitability of infiltration basins as a means of enhancing the quality of lagoon effluent to meet present and future water quality criteria. This objective was met by; 1) Reviewing the available literature on the subject of soil infiltration systems for the disposal of wastewater. 2) Substantiating the need for further treatment of lagoon effluent in South Dakota by a comparison of typical effluent quality with the existing and proposed water quality parameters most apt to be violated. 3) Developing design criteria and methods of operation to meet the conditions specifically related to the disposal of lagoon effluent in South Dakota.

Library of Congress Subject Headings

Water -- Purification

Refuse and refuse disposal -- South Dakota

Sewage lagoons -- South Dakota

Format

application/pdf

Number of Pages

93

Publisher

South Dakota State University

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