Biological Degradation of Hydrazine.
Abstract
Due to the increased procurement, storage, and transportation of hydrazine (HZ) in support of the Titan and Minuteman operational missiles, the Space Shuttle, and F-16 combat fighter programs, the Air Force Engineering and Service Laboratory has been tasked with documenting the effects of fuel spills and low level continuous flow discharges on publicly owned treatment works (POTW). Using 12 bench scale continuous flow recycle reactors, it was shown that treatment efficiency (as measured by COD removal) is not seriously impaired for slug doses which increase aeration basin HZ concentrations up to 44 mg/l. Chemical oxygen Demand (COD) recovery times for slug doses of 243 mg/l were approximately 4 to 5 days. Nitrification ceased at Hz concentrations above 23 mg/l. The 'no effect' concentration with respect to ammonia oxidation was determined to be between 1 to 23 mg/l while nitrate recovery times for doses up to 243 mg/l were on the order of 10 days. Continuous influent HZ concentrations above 10 mg/l seriously degrade COD removal capabilities. Nitrification under continuous feed conditions was inhibited above 1 mg/l.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA084426
Entities
People
- Gregory Urda
- Jay A. Farmwald
- Larry Mcdaniels
- Michael G. Macnaughton