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好氧颗粒污泥系统启动和颗粒特性研究

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Indexed by:期刊论文

Date of Publication:2010-09-15

Journal:大连理工大学学报

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:50

Issue:5

Page Number:656-662

ISSN No.:1000-8608

Key Words:好氧颗粒污泥;SBAR;水力选择压;生物选择压;氮负荷

Abstract:通过逐步缩短沉降时间和提高氮负荷的方法,考察水力选择压和生物选择压共同作用下的好氧颗粒污泥系统启动过程及污泥特性.试验结果表明,系统启动期间,颗粒平均粒径36 d增至0.5 mm,第90 d达到0.9 mm,粒径平均增速为9.3 μm·d-1;前53 d内污泥负荷为0.4~0.6 g·g-1·d-1,表观污泥产率为0.40~0.52 g·g-1,当生物量增长后,污泥负荷降至0.2~0.4 g·g-1·d-1,表观污泥产率减小至0.17~0.25 g·g-1;40 d后SVI稳定在(15±5)mL/g范围内,沉降性能良好;反应器除污染效果好,10 d后COD去除率稳定在80%左右,NH+4-N去除率达到98%以上,且随着氮负荷提高,单位质量污泥的NH+4-N反应速率提高,AOB、NOB和异养菌的活性都在增大.

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