Investigations into the Performance of Membrane-Aerated Biological Reactors Treating a Space Based Waste Stream

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dc.creatorSevanthi, Ritesh
dc.creatorChristenson, Dylan
dc.creatorJackson, William
dc.creatorMorse, Audra
dc.creatorMeyer, Caitlin
dc.creatorVega, Leticia
dc.creatorShull, Sarah
dc.date.accessioned2016-07-28T19:41:25Z
dc.date.available2016-07-28T19:41:25Z
dc.date.issued2016-07-10
dc.descriptionUnited States
dc.descriptionTexas Tech University
dc.descriptionNASA
dc.descriptionJacobs
dc.description303
dc.descriptionICES303: Physio-Chemical Life Support- Water Recovery & Management Systems- Technology and Process Development
dc.descriptionVienna, Austria
dc.descriptionRitesh Sevanthi, Texas Tech University, USA
dc.descriptionDylan Christenson, Texas Tech University, USA
dc.descriptionAudra Morse, Texas Tech University, USA
dc.descriptionW. Andrew Jackson, Texas Tech University, USA
dc.descriptionCaitlin Meyer, Johnson Space Center, USA
dc.descriptionLeticia Vega, Johnson Space Center, USA
dc.descriptionThe 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.
dc.description.abstractTwo demonstration size membrane aerated biological reactors (MABR) CoMANDR 1.0 and CoMANDR 2.0 have previously demonstrated their ability to stabilize an early planetary base (EPB) waste stream over operating periods of ~1 year. Biological stabilization includes oxidation (>90%) of dissolved organic matter to CO2, partial conversion of organic N to NOx-, and reduced pH. Biological stabilization has a number of advantages including: 1) elimination of hazardous pre-treat chemicals; 2) production of N2(gas); 3) production of metabolic water; 3) a low pH effluent that facilitates membrane and distillation processes; and 4) a effluent that produces a better quality and less hazardous brine for water recovery. Preliminary analysis suggests that water recovery systems that integrated biological treatment may trade favorably compared to all physical/chemical systems. However, previous systems have incorporated reactor geometries and membrane specific surface areas which are not flight compatible. The R-CoMANDR (rectangular Counter-diffusion Membrane Aerated Nitrifying Denitrifying Reactor) system was developed to evaluate the ability of the smaller footprint reactor treat the range of possible waste streams (e.g. ISS to EPB) as well as the potential to operate without a feed tank. Individual waste streams (e.g. urine, hygiene, laundry, humidity condensate) are directly fed to the reactor on production. We will present performance data and evaluate the new flight like system design compared to previous systems.
dc.identifier.otherICES_2016_413
dc.identifier.urihttp://hdl.handle.net/2346/67721
dc.language.isoeng
dc.publisher46th International Conference on Environmental Systems
dc.subjectBiological waste water treatment
dc.subjectNitrification
dc.subjectCarbon Oxidation
dc.subjectWater Reuse
dc.titleInvestigations into the Performance of Membrane-Aerated Biological Reactors Treating a Space Based Waste Stream
dc.typePresentation

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