HYDRAULIC MODELING OF MIXING IN WASTEWATER DECHLORINATION BASIN

An investigation is reported which attempted the followinyg: determination of the cause of the insufficient mixing of chemicals indicated by the large fluctuations in measured concentrations; and the determination of basin modifications that increase mixing with minimal structural change and cost. A hydraulic model (1:12-scale sectional laboratory model) reproduced the mixing problem in the plant, the Metropolitan Wastewater Treatment Plant in St Paul, Minnesota. Findings of the study, and the modifications to the SO2 diffuser to provide more uniform SO2 application are discussed. The value of physical models for the sutdy of processes that depend on flow conditions is demonstrated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8675387
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Stefan, H G
  • Johnson, T R
  • McConnell, H L
  • Anderson, C T
  • Martenson, D R
• Publication Date: 1990-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 524-541
• Serial:
  • Journal of Environmental Engineering
  • Volume: 116
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9372
  • Serial URL: http://ojps.aip.org/eeo

Subject/Index Terms

• TRT Terms: Hydraulics; Mathematical models; Sewage treatment; Sulfur dioxide
• Uncontrolled Terms: Models
• Old TRIS Terms: Dechlorination
• Subject Areas: Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00497573
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 30 1990 12:00AM