Characteristics of Granular Sludge of the Internal Circulation Anaerobic Expanded Bed Reactor
内循环厌氧膨胀床反应器颗粒污泥特性

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.