SBR反应器排水高度与直径比对污泥好氧颗粒化的影响  

Influence of SBR drainage height and diameter ratio on aerobic sludge granulation

作　　者：高景峰[1] 郭建秋[1] 陈冉妮[1] 苏凯[1] 彭永臻[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《中国环境科学》2008年第6期512-516,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(50508001);北京市教育委员会科技发展计划面上项目(KM200510005020)

摘　　要：采用实际生活污水,在排水高度与直径比(H/D)分别为1:1和5:1的SBR反应器(编号分别为A和B)中培养好氧颗粒污泥(AGS),考察H/D对污泥好氧颗粒化的影响.结果表明,B反应器仅用16d便实现了污泥好氧颗粒化,而A反应器用了36d才实现污泥好氧颗粒化.2个反应器均稳定运行了612个周期(204d),硝化效果良好.粒径分布、污泥形态观察结果表明,B反应器中所形成的AGS比A反应器的粒径更大,结构更密实,更稳定,形态更规则.B反应器的AGS多由球菌和杆菌组成,无丝状菌;而A反应器的AGS含有大量的丝状菌.在此基础上,探究了H/D、最小沉速、设计沉淀时间等因素之间的相关关系.In the sequencing batch reactor （SBR） of treating real domestic wastewater of the ratio of drainage height and diameter （H/D） being respectively 1：1 and 5：1 （named as A and B） aerobic granular sludge （AGS） was cultured, the H/D influence on aerobic sludge granulation was investigated. B reactor only used 16 days could realize aerobic sludge granulation, and A reactor used 36 days could realize the granulation. Both reactors were stably running 612 cycles （204 days）. Nitrification effect was good. Particle size distribution, sludge morphology results showed that the AGS formed in B reactor was greater than the particle size of A reactor and structure was denser, more stable. AGS of B reactor comprised lots of cocci and bacilli, without filamentous bacteria; and AGS of A reactor contained great amount of filamentous bacteria. On this basis the relations among H/D, minimum settling velocity and design settling time were probed into.

关 键 词：好氧颗粒污泥 最小沉速 沉淀时间 间歇式活性污泥法 排水高度 直径 

分 类 号：X703.1[环境科学与工程—环境工程]