摘要
实验采用人工配水,对生物膜系统中COD和氮的去除进行了研究。实验中pH控制在7.0～7.5左右,温度为20℃～28℃。本实验研究了不同溶解氧、水力停留时间和碳氮比对总氮去除率的影响。实验结果表明,生物膜系统中同时硝化和反硝化具有一定的可行性。在C/N比为8∶1,水力停留时间6h时,溶解氧为0.5～1.0mg/L时,总氮的去除率达53.6%。
The removal of COD_(mn) and nitrogen in biofilm system was studied with pH controlled in 7.0~7.5 and temperature in 20℃~28℃ in the experiment. The impact of various DO, hydraulic retention time and ratio of C/N on removal efficiency of TN was discussed. Results showed that simultaneous nitrification/denitrification is feasible in biofilm system, with removal efficiency of TN up to 53.6% when C/N ratio of 8:1, hydraulic retention time of 6h and DO 0.5~1.0 mg/L.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2005年第3期16-17,共2页
Environmental Science & Technology
基金
烟台大学青年基金课题(HJ04Z8)
关键词
同时硝化反硝化
生物膜
水力停留时间
碳氮比
溶解氧
simultaneous nitrification/denitrification
biofilm
hydraulic retention time
C/N ratio
DO
