HRT对组合式填料SBBR脱氮性能和EPS的影响  

Effect of HRT on Nitrogen Removal Performance and EPS in Combined Packed SBBR

作　　者：马涵 闫多森 朱娅绮 朱晓丹 李姗姗 Ma Han;Yan Duosen;Zhu Yaqi;Zhu Xiaodan;Li Shanshan(School of Resources and Environment,Qingdao Agricultural University,Qingdao Shandong 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：《石油化工高等学校学报》2023年第2期27-33,共7页Journal of Petrochemical Universities

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

摘　　要：研究了水力停留时间(HRT)对组合式填料序批式生物膜反应器(SBBR)处理模拟生活废水性能的影响。考察了不同HRT(16、12、8 h)的条件下SBBR的脱氮性能、脱氮速率和胞外聚合物(EPS)质量分数的变化。结果表明,HRT对COD去除率没有显著影响;缩短HRT抑制生物膜上微生物的活性,使紧密胞外聚合物(TB-EPS)和疏松胞外聚合物(LB-EPS)质量分数增加30.25%、29.88%,脱氮速率降低至64.1%;实验得出的最佳HRT为12 h。The effect of hydraulic retention time(HRT)on the performance of a combined packed sequencing batch biofilm reactor(SBBR)for treating simulated domestic wastewater was investigated.The changes of denitrification performance,denitrification rate and EPS in SBBR were detected and analyzed at different HRT(16 h,12 h and 8 h).The results indicate that HRT has no significant effect on COD removal rate.Shortening HRT inhibited the activity of microorganisms on the biofilm,increased the mass fraction of TB-EPS and LB-EPS by 30.25%and 29.88%,and decreased the denitrification rate to 64.1%.The best HRT obtained from the experiment was 12 h.

关 键 词：序批式生物膜反应器 水力停留时间 脱氮性能 硝化速率 胞外聚合物 

分 类 号：TQ085[化学工程]