SRT对酪蛋白水解物为碳源的EPBR系统的影响  

Effect of SRT on EBPR system with sodium case in hydrolysate as carbon source

作　　者：任晨竹 王少坡 王丽杰[3] 毕艳孟[1,2] 李亚静 于静洁 REN Chenzhu;WANG Shaopo;WANG Lijie;BI Yanmeng;LI Yajing;YU Jingjie(School of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384,China;Tianjin Key Laboratory of Aquatic Science and Technology,Tianjin 300384,China;Changbaishan Vocational Technical College,Baishan 134300,China)

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]长白山职业技术学院,吉林白山134300

出　　处：《工业水处理》2023年第1期56-61,共6页Industrial Water Treatment

基　　金：国家自然科学基金项目(51678388)。

摘　　要：为了探究污泥龄(SRT)对以酪蛋白水解物(Cas aa)为唯一碳源的强化生物除磷(EPBR)系统性能的影响,采用序批式反应器(SBR),在低温条件下考察了SRT对Cas aa为碳源的EPBR中微生物菌群的变化及其污染物去除性能的影响。结果表明,SRT为15 d时,系统除磷性能最佳,除磷率可达95%以上,显著高于其他SRT条件。系统运行典型周期分析表明:当SRT为15 d时,系统的厌氧释磷质量浓度最大,为34.03 mg/L,好氧吸磷质量浓度最大,为48.45 mg/L,除磷效果最优。高通量测序分析结果表明,系统内聚磷菌(PAOs)的组成和结构会随着SRT的变化而变化,SRT为15 d时,系统内全体PAOs相对丰度最高。In order to investigate the effect of sludge retention time(SRT) on the performance of biological phosphorus removal system,a sequential batch reactor(SBR) was used. In this system,sodium casein hydrolysate(Cas aa) was used as the only carbon source. At low temperature,the effects of SRT on the change of microbial community and the removal performance of organic matter were investigated. The results show that when the sludge retention time is 15 d,the system has the best phosphorus removal performance,and the phosphorus removal rate can reach more than 95%,which is significantly higher than other stages. The analysis of typical operation cycle of the system showed that when the sludge retention time was 15 d,the maximum anaerobic phosphorus release and aerobic phosphorus uptake of the system was 34.03 mg/L and 48.45 mg/L,respectively,and the phosphorus removal effect was the best. The results of high-throughput sequencing analysis showed that the composition and structure of polyphosphate accumulating organisms(PAOs) changed with the sludge retention time,and the relative abundance of all polyphosphate accumulating organisms was the highest when SRT was 15 d.

关 键 词：污泥龄 酪蛋白水解物 强化生物除磷 聚磷菌 

分 类 号：X703.1[环境科学与工程—环境工程]