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- Title
Effect of Sulfide Inhibition and Organic Shock Loading on Anaerobic Biofilm Reactors Treating a Low-Temperature, High-Sulfate Wastewater.
- Authors
McDonald, Heather B.; Parkin, Gene F.
- Abstract
To assess the long-term treatment of sulfate-and carbon-rich wastewater at low temperatures, anaerobic bioflim reactors were operated for over 900 days at 20°C and fed wastewater containing lactate and sulfate. Results showed the reactors could be operated at 20°C with a load rate of 1.3 g-chemical oxygen demand (COD)IL. d or less and a sulfur loading rate (SLR) of 0.2 g-S/L d, with no significant deterioration in performance. With acclimation periods, load rates of 3.4 g-COD/L d and SLR of 0.3 g/L. d could be tolerated. Effluent dissolved sulfide and hydrogen sulfide levels were approximately 600 and 150 mg-Sit, respectively, during this period. The effect of organic shock loading was also assessed. Reactors appeared to recover from one, but not two, lactate spikes of approximately 5000 mg-COD/L. Long-term stability was achieved in reactors containing large, stable populations of lactate- and propionate- degrading sulfate-reducing bacteria and aceticlastic methanogens. Water Environ. Res., 81, 265 (2009).
- Subjects
SULFIDES; ANAEROBIC bacteria; BIOFILMS; INDUSTRIAL wastes; WATER pollution; LOW temperatures
- Publication
Water Environment Research (10614303), 2009, Vol 81, Issue 3, p265
- ISSN
1061-4303
- Publication type
Article
- DOI
10.2175/106143008X325656