Effect of sulfide inhibition and organic shock loading on anaerobic biofilm reactors treating a low-temperature, high-sulfate wastewater.
作者： Heather B. McDonald , Gene F. Parkin
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摘要: To assess the long-term treatment of sulfate- and carbon-rich wastewater at low temperatures, anaerobic biofilm reactors were operated for over 900 days 20 degrees C fed containing lactate sulfate. Results showed could be with a load rate 1.3 g-chemical oxygen demand (COD)/L x d or less sulfur loading (SLR) 0.2 g-S/L d, no significant deterioration in performance. With acclimation periods, rates 3.4 g-COD/L SLR 0.3 g/L tolerated. Effluent dissolved sulfide hydrogen levels approximately 600 150 mg-S/L, respectively, during this period. The effect organic shock was also assessed. Reactors appeared to recover from one, but not two, spikes 5000 mg-COD/L. Long-term stability achieved large, stable populations lactate- propionate-degrading sulfate-reducing bacteria aceticlastic methanogens.
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