SBAR中好氧污泥颗粒化及其特性

采用气升式内循环间歇反应器对好氧污泥颗粒化的过程进行了研究,考察了不同水力循环时间下好氧污泥颗粒化过程及其特性,并且对反应器中形成的好氧颗粒污泥内部菌群形态进行了描述.结果表明,不同水力循环时间对好氧颗粒污泥生长特性产生了很大的影响,在较短水力循环时间下,颗粒污泥粒径增长速度快,形成的颗粒粒径多数在 1.0～2.0mm 之间,并且 VSS含量达 92.08%,强度也较高,而在较长水力循环时间中形成的颗粒粒径在 0.5～1.0mm 之间、VSS 含量在 83.92%,污泥强度下降.

The granulation of aerobic sludge and its properties in SBAR

The granulation process of aerobic granular sludge was studied adopting internal-circulate sequencing batch airlift reactors conducted in the reactors. The granulation process and its properties at different hydraulic cycle time were inspected, and the form of the sludge internal bacteria flock formed in the reactor was described. The growth properties of each sludge were affected greatly by the different hydraulic cycle times. At the shorter cycle time the sludge diameter grew quickly, many in 1.0~2.0mm, and VSS content reached 92.08%, with higher strength; while at longer cycle time, the diameter formed was 0.5~1.0mm, VSS content was 83.92%, with strength lowered.