摘要
接种活性污泥启动SBR后,研究选择压法培养好氧颗粒污泥(AGS)的过程中接种部分厌氧颗粒污泥对好氧颗粒化进程的影响。随着沉降时间的缩短,在第6天时肉眼即可观察到一些明显的生物胶团,第11天接种质量分数为20%的厌氧颗粒污泥时已出现少量AGS。投加厌氧颗粒污泥后反应器内菌胶团及淡黄色的AGS的比例不断增加,22 d时AGS已处于主导地位,26d时颗粒化率首次超过90%并占据绝对优势,表明反应器成功实现好氧颗粒化。观察发现接种的厌氧颗粒污泥经历了先解体再重新颗粒化过程,并可作为新生颗粒的晶核而缩短自凝聚所需时间。培养过程中反应器表现出较好的污染物去除效果,对COD、TIN及TP的去除率基本在90%、90%及87%以上,表明在同一反应器内成功实现了去除有机物及同步脱氮除磷效果。
The SBR was started by inoculating with activated sludge, then, anaerobic granular sludge was inoculated during cultivation of aerobic granular sludge （AGS） by selection pressure method, and the effect on aerobic granulation process was investigated by this strategy. With the decrease of set- fling time, some obvious micelles were observed in the reactor on the 6th day, and a small amount of AGS appeared on the l lth day when 20% anaerobic granular sludge was inoculated. The proportion of zoogloea and yellowish AGS gradually increased after the addition of anaerobic granular sludge, and the latter was dominant in the reactor on the 22nd day. Granulation rate exceeded 90% for the first time and AGS occupied the absolute advantage on the 26th day, which indicated that aerobic granulation was a- chieved in the reactor. It was observed that the inoculated anaerobic granular sludge experienced firstly disintegration and then reunion process, which could be served as the crystal nucleus for the new particles to reduce the time required for self-agglomeration the cultivation, the removal rate of COD, TIN and Good performance of the reactor was obtained during TP was usually more than 90% , 90% and 87% , andorganic removal and simultaneous nitrogen and phosphorus removal was successfully achieved in a reac- tor.
出处
《中国给水排水》
CAS
CSCD
北大核心
2017年第17期8-13,共6页
China Water & Wastewater
基金
江西省教育厅科技项目(GJJ150627)
国家自然科学基金资助项目(51464014
21467009)
关键词
好氧颗粒污泥
SBR
接种
厌氧颗粒污泥
培养
aerobic granular sludge
SBR
inoculation
anaerobic granular sludge
culti-vation
