Reseach on operating characteristic of an anaerobic fluid blanket for treating brewery wastewater

Key words: 
• brewery wastewater /
• anaerobic fluid blanket(AFB) /
• operating characteristic /
• apparent up-speed

Abstract: The experiment shows that the self-made anaerobic fluid blanket(AFB)reactor is steady when the conditions such as temperatures,up-speed and so on are changed.The COD removal rate of brewery wastewater can reach above 80% when the temperature is remained at 30±2℃,apparent up-speed is 19.1 m/h,reflux ratio is 8∶1,and HRT is about 6.9 h.Its COD removal rates reach 73%~81% and the speed coefficient of gas production is 0.55~0.612 m3/kg COD when the organic volumetric load is high to 30.65 kg COD/m3·d.At the same time,a segregation phenomenon appearing in the experiment is analyzed.