Chatfield Wastewater Treatment Facility Improvements: A Design and Operational Review, Focused on Cold Weather Issues

This paper describes how cold weather changes wastewater treatment. Biological processes slow down, making treatment less efficient. Ice layers form on the top of exposed tanks, affecting the operation of these tanks, and potentially affecting any equipment located on the surface. Layers of ice can coat enclosures, equipment, and even access ways, making access to maintenance of treatment processes difficult, or even hazardous. As Engineers, the authors need to keep these things in mind during our design. Not only do we need to make sure that we are providing enough tank volume to allow for adequate treatment during these periods of slowed biological processes, we need to ensure that we are providing an environment in which the operators can successfully and safely operate, and maintain their systems. The City of Chatfield's Wastewater Treatment Facility deals with cold weather issues every year. As with all treatment facilities designed for cold weather operation, the design of the facility took into account the larger tanks that are needed in the cold weather to make up for the slowed biological processes. The design discussion included questions like, “how will this work in the winter?” and, “how will we service this equipment in the winter?” However, even with this questioning, there are still a number of cold weather issues that the facility has to deal with, some of which have been solved through operational changes, other which have been solved through the addition or modification of equipment.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; Tables;
  • Pagination: pp 588-598
  • Monograph Title: Cold Regions Engineering 2009. Cold Regions Impact on Research, Design and Construction

Subject/Index Terms

Filing Info

  • Accession Number: 01144256
  • Record Type: Publication
  • ISBN: 9780784410721
  • Files: TRIS
  • Created Date: Nov 17 2009 12:19PM