【摘要】 针对污水处理过程中常因意外事故而需停运这一现象,对停运闲置后的好氧颗粒污泥进行了恢复活性的试验研究。结果表明,经过长达1个多月的停运闲置后好氧颗粒污泥的外部特征仍基本保持完好,但在整个恢复期间,其物理特征变化较大;经过1~2周的恢复性培养,好氧颗粒污泥对有机物的降解速率、硝化速率和反硝化速率基本恢复正常;而且在完全好氧的条件下,好氧颗粒污泥系统不仅能够保证对有机物的良好去除效果,同时还实现了同步脱氮除磷。更多还原

【Abstract】 Considering frequent shutdowns of wastewater treatment equipment due to unforeseen circumstances,an experiment of activity recovery of aerobic granular sludge after the equipment shutdown was carrier out.The results indicate that the sludge,after a month of shutdown,although degenerated physically by a certain degree,is still able to retain the spherical structure.After recovery cultivation for 1 to 2 weeks,the nitrification rate,denitrification rate and COD removal rate of the aerobic granular sludge are improved.In complete aerobic environment,the recovered aerobic granular sludge achieves simultaneous nitrogen and phosphorus removal as well as COD removal.更多还原