TY - GEN
T1 - Simulation of a closed loop wastewater treatment system for extended space flight
AU - Xia, Shu
AU - Morse, Audra
AU - Jackson, Andrew
AU - Wiesner, Theodore F.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Biofilm
KW - Biological treatment
KW - Modeling
KW - Plug flow
UR - http://www.scopus.com/inward/record.url?scp=51949105610&partnerID=8YFLogxK
U2 - 10.1109/ICIEA.2008.4582719
DO - 10.1109/ICIEA.2008.4582719
M3 - Conference contribution
AN - SCOPUS:51949105610
SN - 9781424417186
T3 - 2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008
SP - 1252
EP - 1257
BT - 2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008
T2 - 2008 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA 2008
Y2 - 3 June 2008 through 5 June 2008
ER -