Simulation of a closed loop wastewater treatment system for extended space flight

Shu Xia, Audra Morse, Andrew Jackson, Theodore F. Wiesner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

It is estimated that one liter water sent into space by shuttle expend $22,000, so the research for recycle of water is important to spaceflight. A pilot-scale, closed-loop water recycling system has been run to imitate wastewater produced by space crew. A mathematical model of the individual reactor based on plug flow, as well as system level simulation has been developed for nitrification and denitrification. Two important parameters, Monod constant and reactor efficiency constant, are discussed. The system simulation combines nitrification, denitrification, recycle, and degassing steps, and it accurately reproduces the ammonia, nitrite, nitrate, and total nitrogen (TN) variation observed experimentally at a 20/1 recycle ratio. Both experiments and simulations indicate that biological closed loop wastewater treatment system has significant potential for long-duration manned space flight.

Original languageEnglish
Title of host publication2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008
Pages1252-1257
Number of pages6
DOIs
StatePublished - 2008
Event2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008 - Singapore, Singapore
Duration: Jun 3 2008Jun 5 2008

Publication series

Name2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008

Conference

Conference2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008
CountrySingapore
CitySingapore
Period06/3/0806/5/08

Keywords

  • Biofilm
  • Biological treatment
  • Modeling
  • Plug flow

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  • Cite this

    Xia, S., Morse, A., Jackson, A., & Wiesner, T. F. (2008). Simulation of a closed loop wastewater treatment system for extended space flight. In 2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008 (pp. 1252-1257). [4582719] (2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008). https://doi.org/10.1109/ICIEA.2008.4582719