摘要
采用3组圆柱型SBR反应器进行活性污泥颗粒化培养，接种浓度分别为12500mg·L^-1，4400mg·L^-1和1800mg·L^-1。由于采用逐步缩短沉降时间这一有效措施，系统启动20d后。颗粒污泥初步形成，污泥浓度可达到6000～8000mg·L^-1，高于普通活性污泥系统，且沉降性能良好，SVI值在50mg·L^-1左右。颗粒污泥的平均粒径稳定在0.2～0.25mm。在活性污泥颗粒化的启动试验中，在生物化学条件相同的条件下，逐步缩短沉淀时间可以加快好氧污泥颗粒化系统的启动。
The granular sludge was cultivated in three column-type SBRs at the seeding concentrations of 12 500mg· L^-1, 4 400mg·L^-1 and 1 800mg·L^-1, respectively. After 20 days operation, granular sludge was formed by gradually shortening the settling time instead of setting a fixed time as adopted by other researchers. The MLSS reached 6 000-8 000mg·L^-1 in the reactors, which is much higher than that of the conventional activated sludge system, and exhibits excellent settlement ability with an SVI of around 50mg·L^-1. The average size of the granular sludge increased with operation time and finally stabilized in the range of 0.2- 0.25mm. The research results indicate that gradual reduction of settling time may reduce the startup time for aerobic granular systems under the same biological and chemical conditions.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第2期299-302,共4页
Periodical of Ocean University of China
基金
Eikelboom021N型丝状菌在好氧颗粒污泥形成过程中物理化学作用(30570339)资助
