培养过程中投加部分好氧颗粒对颗粒化的影响

发布时间：2018-06-08 16:25

本文选题：好氧颗粒污泥 + 快速培养　；参考：《中国给水排水》2017年15期

【摘要】：为合理利用好氧颗粒污泥(AGS)这一"稀缺资源",探索培养过程中投加部分成熟AGS对好氧颗粒化的影响。接种活性污泥并将初始沉降时间设为20 min,逐步缩短反应器的沉降时间,当R_(11)、R_(12)及R_(13)的沉降时间分别降至15、10及5 min时投加30%的成熟AGS,结果R_(12)在16d时即成功实现好氧颗粒化,而R_(11)及R_(13)所需时间分别为21及26 d。采用相同的启动条件,当R_(21)、R_(22)及R_(23)的沉降时间降至10 min时分别接种10%、20%及30%的成熟AGS,三个反应器实现好氧颗粒化所需的时间分别为27、24及16 d。由此确定最佳培养条件为沉降时间降至10 min时投加30%的成熟AGS。在10 min时投加AGS有助于维持投加的AGS的稳定性,较好地发挥接种AGS晶核及载体的作用,使得它们避免了经历先解体后重新凝聚的过程,从而极大地缩短了AGS形成所需的时间。
[Abstract]:In order to make rational use of aerobic granular sludge (AGS) as a "scarce resource", the effect of adding some mature AGS on aerobic granulation was explored. Inoculating the activated sludge and setting the initial settling time to 20 mins, the settling time of the reactor was shortened step by step. When the settling time of RW / C / R / S / R / S) and R / D / 13) was reduced to 1510 and 5 min, respectively, 30% mature AGSs were added, and the results showed that the aerobic granulation was achieved at 16 days after inoculation of the activated sludge and the initial settling time was set to 20 mins, and the settling time of the reactor was reduced to 1510 and 5 min, respectively. The time required for this study was 21 and 26 days respectively. Under the same start-up conditions, when the settling time of RSCT / RS / T / R / T _ (22) and R / T _ (23) decreased to 10 min, respectively, 10 20% and 30% of mature AGSs were inoculated. The time required for aerobic granulation in the three reactors was 2724 and 16 days, respectively. The optimum culture conditions are as follows: when the sedimentation time is reduced to 10 min, 30% mature AGSs are added. The addition of AGS at 10 min helps to maintain the stability of the added AGS and play a better role in inoculating the crystal nucleus and carrier of AGS, thus avoiding the process of first disintegrating and then reaggregating, thus greatly shortening the time required for the formation of AGS.
【作者单位】：江西理工大学建筑与测绘工程学院;华中科技大学环境科学与工程学院;
【基金】：江西省教育厅科技项目(GJJ150627) 江西理工大学大学生创新创业训练计划项目(XZG-16-08-08)
【分类号】：X703

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