常温下短程硝化实现及稳定性试验研究

以自配模拟氨氮废水为研究对象,在全程硝化污泥的基础上通过控制低曝气量和提高反应器进水pH值,在较低的DO质量浓度和较高pH值条件下完成了短程硝化污泥的驯化,系统中的NO2--N积累率稳定在95%以上;逐渐提高硝化阶段的曝气量、降低进水溶液的pH值,短程硝化过程没有被破坏;稳定的短程硝化系统改为定时控制,过度曝气6 d后,NO2--N的积累率仅剩43.7%,硝化类型由短程硝化转变为全程硝化。

Partial Nitrification Realization and Stability at Normal Temperature

Taking artificially prepared high ammonia nitrogen wastewater as the research object,on the basis of full nitrification denitrification sludge,through controlling the aeration and the pH of influent water,short-cut nitrification-denitrification sludge with low DO and high pH was achieved.The nitrite nitrogen accumulation rate could above 95%.Then to gradually increase the aeration rate and lower the influent pH,the phenomenon that short-cut nitrification was not destroyed was found.When real time control wa...