化工学报2016，Vol.67Issue(11)：4817-4824,8.DOI:10.11949/j.issn.0438-1157.20160691
同步硝化反硝化SBBR处理低C/N比生活污水的启动与稳定运行
Start-up and steady operation of simultaneous nitrification and denitrification in SBBR treating low C/N ratio domestic wastewater
摘要
Abstract
Taking actual domestic wastewater (C/N=2.6—4.1) as influent substrate and polyurethane filler as biological carrier (filling rate was 25%), the simultaneous nitrification and denitrification (SND) was achieved in sequencing batch biofilm reactor (SBBR) in a short period of time (98 d) with gradually increased nitrogen loading. The results of real-time qualitative polymerase chain reaction (qPCR) confirmed the enrichment of nitrifying bacteria in the reactor. The system had a good effect of organic matter and nitrogen removal in the formal running period. The concentration of COD,4NH+-N and TN of the effluentwaterwas 38.28 mg·L−1, 1.23 mg·L−1 and 8.23 mg·L−1, respectively. Most of COD was taken up and converted to polyhydroxyalkanoate (PHA), and the storage products were used for denitrification, which removed a large amount of nitrate. The removal efficiency of TN and SND was calculated as 82.95% and 70.57%, respectively, and the2NO−-N concentration always kept low level. Since the nitrification and denitrification reactions took place in the same reactor and conditions, the system could maintain pH in a steady conditions by that the increasing basicity in the denitrification process can complement the consuming basicity in the nitrification process. Furthermore, the reaction time can be effectively controlled and the power consumption can be decreased through the curve change of DO and pH to judge the operation status of SND.关键词
低C/N比/SND/生物膜/real-time qPCR/PHAKey words
low C/N ratio/SND/biofilm/real-time qPCR/PHA分类
资源环境引用本文复制引用
张建华,彭永臻,张淼,孙雅雯,王淑莹,王聪..同步硝化反硝化SBBR处理低C/N比生活污水的启动与稳定运行[J].化工学报,2016,67(11):4817-4824,8.基金项目
国家自然科学基金项目（51478013）；北京市教委资助项目。@@@@Foundation item：supported by the National Natural Science Foundation of China (51478013) and the Funding Projects of Beijing Municipal Commission of Education （51478013）
