厌氧好氧一体化生物反应器处理发酵废水的研究

Treatment of Fermentation Wastewater by Integrated Anaerobic-erobic Bioreactor

采用新型厌氧好氧一体化生物反应器对发酵废水进行了中试处理研究．试验结果表明，系统总有机负荷最高可达到8．88kg（COD）m^-3d^-1，系统去除率稳定在88．10％～96．88％，说明反应器处理效率高，抗冲击能力强．反应器结构合理，利于保持丰富、高活性的微生物，反应器厌氧区颗粒污泥TS高达83．9gL^-1，VS／TS为56．9％～57．4％，比产甲烷活性为280～350mL（CH4）gvss^-1d^-1；好氧区固定化微生物TS高达64．03gL^-1载体，VS／TS为94．02％-94．30％．反应器各功能区对废水的降解过程分析，说明反应器厌氧区和好氧区一体化结构合理，可将废水逐级降解，从而保证整个系统的处理效果．

A new pilot-scale integrated anaerobic-aerobic bioreactor was used for studying the treatment of fermentation wastewater. The result showed that the maximum organic volume loading rate of the system could reach 8.88 kg （COD） m^-3 d^- 1 and the COD removal rate could be stable between 88.10% -96. 88%, indicating that the reactor had high treatment efficiency and strong resistance to shock load. The structure of the reactor was reasonable, and it was favorable to preserve abundant and highly active microbes. The TS of granule sludge in anaerobic zone was as high as 83.9 g L^-1, the VS/TS was 56. 9% -57.4% , and the specific activity of methane production was 280 -350 mL CH4 gvss^-1 d^-1. The TS of immobilized biological granule was as high as 64. 03 g L^-1 carrier, and the VS/TS was 94. 02% - 94. 30%. The analysis of degradation process in each functional zone confirmed the integrated structure of the anaerobic and aerobic zones was reasonable, which made pollutants degraded step by step and ensured the treatment effect of the whole system. Fig 8, Tab 4, Ref 11