低温下盐度对多毛型片状组合填料序批式生物膜 反应器脱氮性能及胞外聚合物的影响

全文下载：  202203007.pdf

文章编号： 1672-6987（2022）03004708； DOI： 10.16351/j.1672-6987.2022.03.007

李姗姗， 王浩业， 闫多森， 郭晴雯（青岛农业大学 资源与环境学院，山东 青岛 266109）

摘要： 研究了低温（15 ℃）条件下盐度对序批式生物膜反应器（SBBR）脱氮性能及胞外聚合物（EPS）的影响。结果表明：温度为15 ℃条件下，进水盐度为10%时，出水化学需氧量(COD)和NH+4N浓度分别为8713%±421%和8539%±928%，与盐度为0%时相比分别降低了345%和1316%；进水盐度由0%升高至1%时，比耗氧速率和脱氮速率下降，活性氧生成量和乳酸脱氢酶释放量增加，表明低温下盐度诱导了污泥细胞内氧化应激并造成细胞损伤；进水盐度由0%升高至10%时，EPS、松散型EPS（LBEPS）和紧密型EPS（TBEPS）含量及LBEPS和TBEPS中蛋白与多糖比值增大。

关键词： 低温； 盐度； 序批式生物膜反应器； 脱氮速率； 胞外聚合物

中图分类号： X 703.1文献标志码： A

引用格式： 李姗姗，王浩业，闫多森，等. 低温下盐度对多毛型片状组合填料序批式生物膜反应器SBBR脱氮性能及胞外聚合物的影响［J］. 青岛科技大学学报(自然科学版), 2022, 43(3): 4754.

LI Shanshan, WANG Haoye, YAN Duosen, et al. Effect of salinity on nitrogen removal performance and extracellular polymer of hairy flake packing SBBR［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2022， 43（3）： 4754.

Effect of Salinity on Nitrogen Removal Performance and Extracellular

Polymer of Hairy Flake Packing SBBR

LI Shanshan, WANG Haoye, YAN Duosen, GUO Qingwen

(School of Resources and Environment, Qingdao Agricultural University, Qingdao 266071, China)

Abstract: The effects of salinity on nitrogen removal performance and the extracellular polymeric substances (EPS) of sequencing batch biofilm reactor (SBBR) were studied at the low temperature (15 ℃). The results showed that at temperature of 15 ℃, the average removal efficiencies of COD and NH+4N were 8713%±421% and 8539%±928% at 1% salinity, which decreased by 345% and 1316% compared with 0% salinity, respectively. The specific oxygen uptake rate and the nitrogen removal rates decreased with the increase of influent salinity from 0% to 1%, while the production of reactive oxygen species and the release of lactate dehydrogenase increased, indicating that salinity induced oxidative stress and cell damage in sludge cells at low temperature. The content of EPS, loosely bound EPS (LBEPS), tightly bound EPS (TBEPS) and the protein/polysaccharide ratio in LBEPS and TBEPS increased with the increase of influent salinity from 0% to 1% at 15 ℃.

Key words: low temperature; salinity; sequencing batch biofilm reactor; nitrogen removal rate; extracellular polymeric substances

收稿日期： 20210730

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

作者简介： 李姗姗（1988—）,女，副教授.同等贡献.