Evaluation of Brine Processing Technologies for Spacecraft Wastewater


Brine drying systems may be used in spaceflight. There are several advantages to using brine processing technologies for long-duration human missions including a reduction in resupply requirements and achieving high water recovery ratios. The objective of this project was to evaluate four technologies for the drying of spacecraft water recycling system brine byproducts. The technologies tested were NASA’s Forward Osmosis Brine Drying (FOBD), Paragon’s Ionomer Water Processor (IWP), NASA’s Brine Evaporation Bag (BEB) System, and UMPQUA’s Ultrasonic Brine Dewatering System (UBDS). The purpose of this work was to evaluate the hardware using feed streams composed of brines similar to those generated on board the International Space Station (ISS) and future exploration missions. The brine formulations used for testing were the ISS Alternate Pretreatment and Solution 2 (Alt Pretreat). The brines were generated using the Wiped-film Rotating-disk (WFRD) evaporator, which is a vapor compression distillation system that is used to simulate the function of the ISS Urine Processor Assembly (UPA). Each system was evaluated based on the results from testing and Equivalent System Mass (ESM) calculations. A Quality Function Deployment (QFD) matrix was also developed as a method to compare the different technologies based on customer and engineering requirements.


Bellevue, Washington
Hali L. Shaw1 University of California Santa Cruz
Michael Flynn, NASA Ames Research Center, USA
Jeffery Lee, NASA Ames Research Center, USA
Harry Jones, NASA Ames Research Center, USA
Lance Delzeit, NASA Ames Research Center, USA
Richard Wisniewski, NASA Ames Research Center, USA
Sarah Shull, NASA Johnson Space Center, USA
Miriam Sargusingh, NASA Johnson Space Center, USA
David Beeler, CSS-Dynamac Co., USA
Jeanie Howard, CSS-Dynamac Co., USA
Kevin Howard, CSS-Dynamac Co., USA
Linden Harris, CSS-Dynamac Co., USA
Jurek Parodi, Science and Technology Corporation, USA
Brian Kawashima, Universities Space Research Association, USA
The 45th International Conference on Environmental Systems was held in Bellevue, Washington, USA on 12 July 2015 through 16 July 2015.