摘要
采用序批式生物反应器(SBR)处理模拟废水,在pH值7.0～8.0、温度30～32℃、DO浓度0.5～1mg/L、MLSS(4000±300)mg/L、NH4+-N35～45mg/L条件下,考察乙酸钠、淀粉和葡萄糖作为碳源对SBR工艺同步硝化反硝化效果的影响。结果表明:投加葡萄糖时,COD去除率达到93.95%,出水硝酸盐浓度为7mg/L;投加淀粉时,COD去除率仅70%,出水硝酸盐浓度为12mg/L;采用乙酸钠作为碳源时,COD去除率为88.34%,出水硝酸盐浓度为4mg/L。COD/NH4+-N为12,分次投加乙酸钠时,氨氮去除率高于95%,总氮去除率高于90%,实现了同步硝化反硝化。在同步硝化反硝化SBR系统中,乙酸钠比淀粉和葡萄糖更适合作为碳源。
A sequencing batch reactor（SBR）was used to treat synthetic wastewater.Effects of organic carbons including sodium acetate,amylum and glucose on simultaneous nitrification and denitrification （SND）were investigated when pH,temperature,DO,MLSS and NH4＋-N were 7.0—8.0,30—32℃,0.5—1 mg/L,（4000±300）mg/L and 35—45 mg/L,respectively.Results indicated that removal efficiency of COD was 93.95%,and effluent NO3--N was 7 mg/L when glucose was used as carbon source.Removal efficiency of COD was only 70% and effluent NO3--N was 12 mg/L when amylum was used as carbon source.For sodium acetate,the COD removal efficiency was 88.34% and the effluent NO3--N was 4 mg/L.When COD/NH4＋-N was 12 and sodium acetate was added intermittently,the removal efficiency of total nitrogen was higher than 90%,and simultaneous nitrification and denitrification were achieved.As a carbon source,sodium acetate was found more appropriate for SND in the SBR system than glucose and amylum.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2010年第12期2395-2399,共5页
Chemical Industry and Engineering Progress
基金
吉林省科技发展计划项目-科技引导计划应用基础研究(20090599)资助
关键词
溶解氧
序批式生物反应器
碳源
同步硝化反硝化
dissolved oxygen
sequencing batch reactor
carbon source
simultaneous nitrification and denitrification
