利用碱度控制SBR中短程硝化反应的进程  

Effect of alkalinity on the [NH_4^+-N] ratio during partial nitrification in a sequencing batch reactor

作　　者：张子健[1] 王舜和[2] 王建龙[1] 汪群慧[2] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]哈尔滨工业大学环境科学与工程系,哈尔滨150090

出　　处：《清华大学学报（自然科学版）》2008年第9期1475-1478,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(59978020);高等学校博士学科点专项科研基金资助课题

摘　　要：为研究利用碱度控制序批式反应器(SBR)中短程硝化反应进程的可能性,该文考察了不同碱度情况对SBR短程硝化过程的影响。当碱度低于理论需要时,pH会超出亚硝酸菌适宜的范围,导致反应中止。故可用pH和溶解氧作为控制参数,利用碱度控制短程硝化实现出水50%亚硝化。结果表明,短程硝化与初始碱度密切相关,当初始碱度为理论值一半左右时,恰好约有50%~60%的氨氮被亚硝化。另外pH降低是反应受到抑制的主要原因。Partial nitrification in a sequering batch reactor is sensitive to the alkalinity. Experimental test on the effect of alkalinity on [NH＋-N] ratio during partial nitrification shows that low alkalinity environments are not conducive to ammonia-oxidizing bacteria＇s activity during the nitritation. As a result, the nitritation process ceased. Therefore, the pH and the dissolved oxygen can be used to control the nitrification process with the alkalinity used to control the nitrification to achieve half-nitritation. The batch experimental results indicate that the [NH＋-N] removal rate is related with the initial alkalinity and that reductions in the pH value stop the nitritation process.

关 键 词：碱度 短程硝化 亚硝化 溶解氧 

分 类 号：X703.3[环境科学与工程—环境工程]