摘要
为了研究甲醇长期使用过程中反硝化性能的变化,按ρ(TOC)/ρ(N)为1.6±0.2于缺氧反硝化初投加一定量的甲醇作外碳源,以SBR间歇运行方式展开相关研究.结果显示,系统运行至37 d时即出现稳定的比反硝化速率,其由运行之初的0.378 mg NOx-N/(gVSS.h)提高到2.406 mg NOx-N/(gVSS.h).污泥驯化后的氮吸收速率试验发现,甲醇作碳源的ρ(TOC)/ρ(N)适宜范围是1.10~2.68.同时发现,16℃相对20℃的反硝化速率温度修正系数θ达1.07,表明温度降低对生物反硝化有较大抑制作用.从经济角度出发,甲醇投加应根据生物微环境及周围环境的变化作相应调整.
Changes in functional properties of biological denitrification in the long-term use of methanol were explored,with addition of methanol(ρ(TOC)/ρ(N)=1.6±0.2) at the start of anoxic phase in sequencing batch reactor(SBR).The results showed that stable nitrate reduction rates were not reached until 37 days of methanol addition,and specific denitrification rate increased from 0.378 mgNOx-N/(gVSS·h) to 2.406 mgNOx-N/(gVSS·h).Besides,from nitrogen uptake rate(NUR) tests with methanol acclimation sludge,the approp...
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2009年第11期1521-1526,共6页
Journal of Beijing University of Technology
基金
'十一五'国家科技支撑重点资助项目(2006BAC19B03)
北京市教委科技创新平台资助项目(PXM2008-014204-050843)
关键词
反硝化
甲醇
碳源
C/N
denitrification
methanol
carbon source
C/N
