Treatment of Spacecraft Wastewater in a Submerged-Membrane Biological Reactor Dynamac Corporation, Kennedy Space Center

Format:

Conference/Event

Author/Creator:

Strayer, R. F., author.

Conference Name:

International Conference On Environmental Systems (2003-07-07 : Vancouver, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

A submerged membrane biological reactor (MBR) was evaluated for treatment of a spacecraft wastewater analog. The aerobic MBR (a modified CSTR) had a 12 L working volume, submerged 0.2 μm membrane filter, 12.6 h hydraulic retention time (simulated 2 person crew), and infinite solids retention time. Simulated graywater contained a urine analog and two surfactants: disodium cocoamphodiacetate and sodium laureth sulfate (461 ppm of active ingredient, combined). Two MBR runs of 60- and 10-day durations were completed with different conditions (startup: 16 d vs. 3 d, pH control vs. none). Influent, effluent, and mixed liquor were analyzed for COD, BOD, TSS, surfactant concentration, and microbial load and activity. BOD removal averaged 92% for each run with 100% surfactant degradation but no detectable nitrification. The food to mass (F/M) ratio decreased over time. Surfactant decomposition is feasible with a small-scale MBR, although changes are needed to promote nitrification

Notes:

Vendor supplied data

Publisher Number:

2003-01-2556

Access Restriction:

Restricted for use by site license