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

马涵 闫多森 朱娅绮 朱晓丹 李姗姗

Han Ma Duosen Yan Yaqi Zhu Xiaodan Zhu Shanshan Li

青岛农业大学 资源与环境学院，山东 青岛 266109

School of Resources and Environment，Qingdao Agricultural University，Qingdao Shandong 266109，China

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.

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)

10.12422/j.issn.1006-396X.2023.02.004