Abstract:

In most studies of activated sludge modeling, the concentration of biomass in the influent is assumed to be negligible, compared to the quantity of biomass that is grown, maintained and recycled to the process itself. However, recent studies found that slow-growing microorganisms such as nitrifiers may naturally and continuously seeding the activated sludge system. Thus, their immigration rate could be significant compared to the apparent growth rate in the bioreactors. This review introduced the influent nitrifier community and its nitrification activity. Furthermore, we analyzed the natural continuous seeding effect on the wastewater modeling and wastewater treatment plant design.

Key words: sewer pipe, raw sewage, nitrifiers, community assembly, natural continuous seeding

摘要：

以往活性污泥模型及污水处理厂设计计算都假设城市污水中微生物数量相对于活性污泥系统内的微生物数量可以忽略。而近期国内外研究表明，城市污水中微生物尤其是慢增长型微生物（如硝化菌）对活性污泥系统具有影响。主要介绍城市污水中硝化菌（原生硝化菌）的群落结构与硝化活性，重点论述了原生硝化菌对活性污泥中硝化菌性能及群落构建的影响，并对其在活性污泥模型开发及污水处理厂设计改进方面的应用和发展前景进行了探讨。

关键词: 城市污水管网, 城市污水, 硝化菌, 群落构建, 连续自然接种

CLC Number: 

• X703.1