厌氧陶粒附着膜膨胀床启动及运行实验研究

Investigation on start-up and operation of an anaerobic attached microbial film expanded bed with ceramisites as biofilm carrier

摘要: 采用载体吸附法的固定化方式培养了高活性的厌氧生物膜颗粒,并研究了反应器的启动运行、工艺特性及污泥特性等规律,探索用生物膜颗粒取代厌氧颗粒污泥的可行性,以缓解国内颗粒污泥供应不足的问题.实验装置采用厌氧附着膜膨胀床,投加人工配水,裸载体为陶粒(湿视密度1310kg·m^-3,平均粒径0.32mm).实验分初次启动、二次启动及稳定运行两个阶段进行,反应器仅需24d就可完成启动,COD容积负荷最高达到18kg·m^-3·d^-1,相应的COD去除率在70%~80%之间.

Abstract: Anaerobic biofilm particles with high activity were developed by the immobilized method of carrier adsorption. The start-up and operation of the reactor, the processing characteristics and the sludge characteristics were investigated. The feasibility of granular sludge replaced by biofilm particles was discussed to resolve the shortage of granular sludge in China. The equipment was applied an anaerobic attached microbial film expanded bed, whose influent was artificial and whose bare carrier was ceramic media with a wet superficial density of 1 310 kg·m^-3 and an averaged meter of 0.32 mm. The results showed that start-up of the reactor was successful only in 24 d, the COD volumetric loading rate (OLR) was up to 18 kg·m^-3·d^-1 and the COD removal efficiency was 70%~80%.