摘要
为研究如何获得厌氧氨氧化的快速启动工艺,采用两种不同水力流态反应器:完全混合式膜生物反应器(MBR)和推流式厌氧折流板反应器(ABR),分别接种絮状硝化污泥,考察其厌氧氨氧化快速启动性能.结果表明:两种反应器均能成功启动厌氧氨氧化,MBR启动周期(90 d)比ABR(111 d)缩短20%;稳定运行期内,MBR总氮(NH_4^+-N+NO_2^--N)平均去除负荷[0.098 kg·(m3·d)-1]也明显高于ABR[0.089 kg·(m3·d)-1];此外,两个反应器中污泥形态差异明显,MBR中污泥呈絮状,而ABR第1隔室中以厌氧氨氧化颗粒污泥为主;NH_4^+-N、NO_2^--N和NO_3^--N之间的定量关系分析表明:相较于ABR,MBR能实现完全的生物截留,使得系统内含有更多种类的脱氮功能菌,有利于氮素的去除.MBR在厌氧氨氧化的快速启动方面表现出更明显的优势.
In order to study the quick start-up process of anaerobic ammonium oxidation（ ANAMMOX）,two types of reactors with different hydraclic flow state inoculated with aerobic nitrifying sludge were investigated,the membrane bioreactor（ MBR） and anaerobic baffled reactor（ ABR）,respectively. The result showed that both reactors successfully started up ANAMMOX process. The start-up period of the MBR（ 90 d） was 20% shorter than the ABR（ 111 d）. During the stable operation,the average nitrogen（ NH4＋-N ＋NO2--N） removal capacity of 0. 098 kg·（ m3·d）- 1in the MBR was also higher than that of 0. 089 kg·（ m3·d）- 1in the ABR. In addition,the differences of sludge morphology were obvious in the two reactors; flocculent sludge was developed in the MBR while ANAMMOX granular sludge was mainly formed in the first compartment of the ABR. Moreover,the quantitative relationship analysis between NH4＋-N,NO2--N and NO3--N showed that the MBR system contained more kinds of bacteria with nitrogen removal function,compared to the ABR,and it was therefore more conducive to the removal of nitrogen. MBR exhibited a more excellent performance for ANAMMOX start-up.
作者
闾刚
徐乐中
沈耀良
吴鹏
张婷
程朝阳
LV Gang XU Le-zhong SHEN Yao-liang WU Peng ZHANG Ting CHENG Chao-yang(School of Environmental Science and Engineering, Suzhou University of Science and Technology, Snzhou 215009, China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou 215009, China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2017年第3期1116-1121,共6页
Environmental Science
基金
国家自然科学基金项目(51578353)
江苏省自然科学基金项目(BK20160356)
江苏高校优势学科建设工程项目
环境工程江苏省重点专业类项目
江苏省高校自然科学研究项目(16KJB610013)
苏州科技学院科研基金青年项目(XKQ201504)
江苏省2015年度普通高校研究生实践创新计划项目(SJLX15-0636)
关键词
厌氧氨氧化
膜生物反应器
厌氧折流板反应器
快速启动
脱氮
anaerobic ammonium oxidation（ANAMMOX）
membrane bioreactor（MBR）
anaerobic baffled reactor（ABR）
quick start-up
nitrogen removal
