低温低C/N比复合A^2/O启动实验研究  

Start-up Experiment of Hybrid A^2/O under a Low Temperature and Low C/N Ratio

作　　者：彭硕佳[1] 邹洪[2] 张永祥[1] 赵志刚[1] 赵鹏芳[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中国电子工程设计院,北京100840

出　　处：《环境科学与技术》2013年第2期142-146,共5页Environmental Science & Technology

摘　　要：研究了低温低碳氮比条件下好氧段添加AquaMat(s阿科蔓)的A2/O工艺的挂膜启动实验。结果表明:在环境温度为10~12℃,C/N为3.5左右的条件下,当系统HRT为10 h,SRT为15 d,污泥回流比为100%,硝化液回流比为200%,好氧段DO在2~3 mg/L,初始MLSS为4 000 mg/L时,好氧段阿科蔓经30 d左右挂膜成功。系统对COD,氨氮,总氮的去除率分别达到90%、97%、60%。对总磷的去除率低且不稳定。实验研究了挂膜过程中COD、氨氮、硝酸盐氮、总氮、总磷、ORP、MLSS及微生物相的变化规律并分析了变化原因。Biofilm forming experiment of AquaMats which is added in the aerobic section of A^2/O process under a low temperature and low C/N ratio was studied. Results showed that at an ambient temperature of 10-12℃, C/N ratio about 3.5, under the conditions of the system I-IRT 10 h, SRT 15 d, sludge reflux ratio 100%, nitrification liquid reflux ratio 200%, aerobic section DO 2-3 rag/L, initial MLSS 4 000 mg/L, the biofilm on AquaMats was formed successfully by about 30 d. Removal rate of the system COD, ammonia nitrogen, total nitrogen reached 90%, 97% and 60% respectively. Removal rate of phosphorus was low and unstable. Variation of COD, ammonia nitrogen, nitrate nitrogen, total nitrogen, total phosphorus, ORP, MLSS and microbial phase was investigated and the causes of variation were analyzed.

关 键 词：低温 低碳氮比 阿科蔓 A2/O工艺 挂膜 

分 类 号：X703.1[环境科学与工程—环境工程]