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.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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
关键词
碱度
短程硝化
亚硝化
溶解氧
alkalinity
partial nitrification
nitritation
dissolved oxygen
