摘要
[目的]研究进水负荷对厌氧氨氧化膜生物反应器脱氮性能和膜污染的影响。[方法]运行期间,进水的总氮负荷从150 mg/L逐步提高到400 mg/L,分别对污泥浓度、污泥粒径分布、氨氮和亚硝酸盐的去除率进行测定,研究进水负荷的改变对反应器脱氮性能的影响。通过对膜组件的跨膜压差以及反应器内污泥混合液和膜表面污染物内胞外聚合物(EPS)和溶解性微生物产物(SMP)中蛋白质和多糖含量的测定,研究进水负荷的改变对膜污染的影响。[结果]随着进水负荷的提高,反应器始终保持良好的脱氮性能;膜污染速率加快,膜表面污染物EPS和SMP中蛋白质和多糖的含量均呈增加趋势,说明蛋白质和多糖是影响膜污染的主要因素。[结论]进水负荷的提高对反应器脱氮性能无明显的影响,但会加剧反应器的膜污染。
[Objective] The effect of influent loading on nitrogen removal performance and membrane fouling on anammox membrane bioreactor（ An MBR） was investigated. [Method]The influent loading of TN was increased from 150 to 400 mg/L during the operating time of the reactor,the sludge concentration,particle size distribution of sludge,and the removal rates of ammonia and nitrite were measured respectively,to explore the influence of influent loading on the reactor. To explore the reason for membrane fouling,the transmembrane pressure（ TMP） and the concentration of protein（ PN） and polysaccharide（ PS） in extracellular polymeric substance（ EPS） and soluble microbial products（ SMP） of the reactor and membrane foulants were further tested. [Result]With the increase of the influent loading,the reactor showed good performance for nitrogen removal,and the membrane fouling rate of the membrane module was accelerated,the concentration of protein（ PN） and polysaccharide（ PS）in extracellular polymeric substance（ EPS） and soluble microbial products（ SMP） were increased with the increasing of the influent loading,indicating that PN and PS were key factors to membrane fouling. [Conclusion]The increase of the influent loading showed no significant influence on nitrogen removal performance,but the membrane fouling was aggravated.
作者
李龙翔
孟凡刚
王新华
LI Long-xiang ,MENG Fan-gang, WANG Xin-hua(1. School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100 ;2. School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275)
出处
《安徽农业科学》
CAS
2018年第13期71-74,126,共5页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(51778344)
山东大学基本科研业务费专项(2015JC025)
关键词
厌氧氨氧化
膜生物反应器
进水负荷
脱氮性能
膜污染
Anaerobic ammonia oxidation
Membrane bioreaetor
Influent loading
Denitrifieation performance
Membrane fouling
