内循环厌氧膨胀床反应器颗粒污泥特性

研究了内循环厌氧膨胀床反应器(the internal circulation anaerobic expanded bed reactor, ICAEB reactor)的颗粒污泥特性.结果表明,该反应器在平均COD容积负荷28.2kg/(m³·d)下稳定运行时,平均COD去除率为89.0%,内循环比约12.5.反应器中培养出普通颗粒污泥和悬浮颗粒污泥.位于反应器第2反应区液面的悬浮颗粒污泥层具有动态稳定性,相对稳定的运行条件可降低其对反应器的不利影响,必要时也可采取适当的措施予以清除.

Characteristics of Granular Sludge of the Internal Circulation Anaerobic Expanded Bed Reactor

Granular sludge characteristics of the Internal Circulation Anaerobic Expanded Bed (ICAEB) reactor is reported. Experimental results show that the mean COD removal was 89.0% and the internal circulation flow rate was about 12.5 when the reactor running steadily with the mean COD volumetric loading rate 28.2kg/(m³·d). General granular sludge and suspended granular sludge are cultured in the reactor. The suspended granular sludge layer found in the fluid level of the second reaction section is dynamically stable. Keeping comparative steady operational condition could reduce the adverse influence of the suspended granular sludge layer, if necessary, suitable measurement could be adopted to remove the overabundant suspended granular sludge off.