摘要
研究了IC反应器的快速启动方法和启动过程中颗粒污泥性质 .结果表明 ,由于反应器成功滞留了大量活性高、沉降性能好的颗粒污泥 ,反应器初次启动可在 2 0d内完成 ,二次启动 1 5d内完成 ,反应器负荷可达 1 2～ 1 5kg·(m3·d) -1,COD去除率 85%以上 ;IC反应器启动结束后 ,其颗粒污泥的性质发生显著变化 ,平均粒径由 0 .88mm增大到 1 .2 5mm ,平均沉降速度由接种污泥的 35 4m·h-1增加到 1 0 5 1 7m·h-1,最大比产甲烷活性 [382 98ml·(g·d) -1]几乎为初期的 4倍 ,产甲烷优势菌由Methanothrix转变为产甲烷球菌和短杆菌 .
The quick start-up of the laboratory scale IC reactor and the characteristics of granular sludge during start-up were studied in this paper. The results showed that the first start-up of IC reactor could be finished in 20 days, while secondary start-up only needed 15 days with COD loading rate of 12～15 kg·(m 3·d) -1 and COD removal larger than 85%. During start-up, the characteristics of granular sludge changed greatly: average granular diameter was increased from 0.88 mm to 1.25 mm; average settling velocity was enhanced from 35.4 m·h -1 to 105.17 m·h -1 ; methanogenic activities of the granular increased up to 4 times as large as the seeded sludge; the main methanobacteria was changed from Methanothrix to Methanococcus and Methanobacterium.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第3期30-34,共5页
Environmental Science
基金
教育部骨干教师科研资助
