低温下碳氮比对序批式生物膜反应器脱氮性能及胞外聚合物的影响  

Effect of C/N Ratio on Nitrogen Removal Performance and Extracellular Polymeric Substances in Sequencing Batch Biofilm Reactor at Low Temperature

作　　者：朱晓丹 郭晴雯 张翰林 马涵 李映雪 李姗姗 ZHU Xiao-dan;GUO Qing-wen;ZHANG Han-lin;MA Han;LI Ying-xue;LI Shan-shan(College of Resources and Environment,Qingdao Agricultural University,Shandong Qingdao 266109,China)

机构地区：[1]青岛农业大学资源与环境学院,山东青岛266109

出　　处：《广州化工》2022年第8期50-53,66,共5页GuangZhou Chemical Industry

基　　金：青岛农业大学高层次人才启动基金(665/1120042);山东省大学生创新创业训练计划项目(S202010435109)。

摘　　要：研究了在低温条件下C/N比变化对序批式生物膜反应器(SBBR)的脱氮性能、脱氮速率及胞外聚合物(EPS)的影响。结果表明,随着进水C/N比由13.3增大至20.0,COD的去除和SBBR的脱氮性能未受明显影响,表现为COD和NH_(4)^(+)-N的去除率分别维持在92.18%±0.53%和98.54%±0.57%;SBBR的脱氮速率上升,表现为比氨氧化速率、比亚硝酸盐氧化速率、比亚硝酸盐还原速率和比硝酸盐还原速率分别上升了14.57%、13.05%、8.12%和10.77%;EPS及其中的多糖和蛋白质含量降低。The effect of the change of C/N ratio on the denitrification performance,denitrification rate and extracellular polymeric(EPS)of Sequential Batch Biofilm Reactor(SBBR)under low temperature conditions was studied.The results showed that with the influent C/N ratio increased from 13.3 to 20.0,the removal of COD and the denitrification performance of SBBR were not significantly affected and the removal rates of COD and NH_(4)^(+)-N were maintained at 92.18%±0.53%and 98.54%±0.57%,respectively.The denitrification rate of SBBR increased and the specific ammonia oxidation rate,the specific nitrate oxidation rate,the specific nitrate reduction rate and the specific nitrate reduction rate increased by 14.57%,13.05%,8.12%and 10.77%,respectively.EPS and its polysaccharide and protein content were decreased.

关 键 词：C/N比 序批式生物膜反应器 脱氮性能 脱氮速率 胞外聚合物 

分 类 号：X703[环境科学与工程—环境工程]