培养过程中投加部分好氧颗粒对颗粒化的影响  

Impact of Inoculating with Part of Mature Aerobic Granule on Aerobic Granulation during Cultivation

作　　者：龙焙[1] 程媛媛[1] 赵珏[1] 张婧[2] 濮文虹[2] 杨昌柱[2] 

机构地区：[1]江西理工大学建筑与测绘工程学院,江西赣州341000 [2]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《中国给水排水》2017年第15期13-19,共7页China Water & Wastewater

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)

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。Impact of inoculating with part of mature aerobic granular sludge （AGS） on aerobic granulation was investigated, which devoted to take advantage of AGS properly. Inoculated with activated sludge and the initial settling time was set to 20 min, then, the settling time of the reactors were gradually reduced. 30% mature AGS was added respectively when the settling time of R11, R12 and R13 reduced to 15 min, 10 min and 5 min. Results indicated that R12 achieved aerobic granulation on the 16th day, while the time needed for R11 and R13 was 21 days and 26 days respectively. Under the same startup con- ditions, 10% , 20% and 30% of the mature AGS were added to R21, R22, and R23 respectively when their settling time reduced to 10 min, and the granulation time of the three reactors were 27 days, 24 days and 16 days respectively. Optimum cultivation conditions thereby were determined to be when settling time reduced to l0 rain and 30% mature AGS was added. Results indicated that stability of AGS could be maintained when the AGS was added at 10 rain, and the inoculated AGS played the role of crystal nucle- us or carriers. Therefore, granulation time was greatly reduced, as the process of firstly disintegration and then reunion of the inoculated AGS was avoided.

关 键 词：好氧颗粒污泥 快速培养 颗粒化 投加时间点 投加量 

分 类 号：X703[环境科学与工程—环境工程]