TRANSPIRATION AND EVAPORATION OF SEWAGE EFFLUENT

Treatment of liquid wastes from roadside comfort stations with relatively small, transient effluent volumes often involves prohibitive operation and maintenance costs. Also, existing lagoons and septic tanks may be unable to meet new state and federal restrictions on waste discharges. Therefore, experiments were conducted to develop practical, zero-discharge procedures for utilizing the evapotranspiration phenomenon to dispose of sewage effluent. Two separate experiments were conducted. In the first experiment, impervious evapotranspiration units were constructed in rectangular excavations. Both raw domestic waste and settled domestic waste were pumped into or sprayed onto the units, and the evapotranspiration rate was determined through a water balance. In the second experiment, effluent from a two-stage lagoon was sprayed on an area vegetated with grass and shrubs. Results indicate that the operation of a well-designed, lagoon-fed spray irrigation system will be an economical, ecologically-sound method for disposing of liquid wastes from roadside rest areas.

  • Supplemental Notes:
    • Sponsored in part by Alabama State Highway Department.
  • Corporate Authors:

    Auburn University

    Engineering Experiment Station
    Auburn, AL  USA  36849

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Alabama State Highway Department

    11 South Union Street
    Montgomery, AL  USA  36130
  • Authors:
    • Jenkins, S R
    • Molz, F J
  • Publication Date: 1976-12

Media Info

  • Pagination: 84 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00175500
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-AL-76-81
  • Contract Numbers: 81
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: May 31 1978 12:00AM