Storage and Subsequent Reactivation of Phosphate- Accumulating Aerobic Granules

• Published in: Transactions of Tianjin University Vol. 17; no. 3; pp. 187 - 193
• Main Author: 黄宇 赵林 谭欣 董涛 李金娟
• Format: Journal Article
• Language: English
• Published: Heidelberg Tianjin University 01.06.2011
• Subjects: Engineering; Humanities and Social Sciences; Mechanical Engineering; multidisciplinary; Science; 好氧颗粒污泥; 存储介质; 杆状细菌; 活化性能; 活性污泥; 激活; 磷酸盐; 积累能力; reactivation; granular structure; storage; phosphate-accumulating aerobic granules
• ISSN: 1006-4982; 1995-8196
• DOI: 10.1007/s12209-011-1555-y

Phosphate-accumulating aerobic granules cultivated in a sequencing batch reactor were composed of inner rod-shaped bacteria aggregates and outer twining filamentous bacteria. The influence of two-month storage under dif- ferent conditions on the storage and subsequent reactivation performance of aerobic granules was investigated. After two-month storage the granules sealed at 4 ~C in distilled water or normal saline （named granules A and granules B, respectively） could maintain their characteristics as before, while the granules idled in the reactor at room temperature （named granules C） exhibited decreased properties. During reactivation, granules A and granules B presented almost identical recovery performance, faster than granules C, in terms of phosphorus removal efficiency, mixed liquor sus- pended solids （MLSS）, phosphate release and accumulating ability. The results suggest that hermetical storage at low temperature promoted the maintenance of the granular properties and the reviving behaviors of phosphateaccumulating aerobic granules, and storage medium had little influence on the storage and recovery perfomlance.