低碳源废水培养的好氧颗粒污泥常温储存后活性恢复研究  被引量:5

Reactivation of aerobic granular sludge cultivated by low-strength wastewater after room-temperature storage

在线阅读下载全文

作  者:邹金特 何航天 潘继杨 陶亚强 李军 ZOU Jin-te;HE Hang-tian;PAN Ji-yang;TAO Ya-qiang;LI Jun(Key Laboratory of Microbial Technology for Industrial Pollution Controlof Zhejiang Province,College of Environment,Zhejiang University of Technology,Hangzhou 310014,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区:[1]浙江省工业污染微生物控制技术重点实验室浙江工业大学环境学院,杭州浙江310014 [2]浙江工业大学建筑工程学院,杭州浙江310014

出  处:《中国环境科学》2018年第12期4530-4536,共7页China Environmental Science

基  金:国家自然科学基金项目(51478433;51708500);浙江省大学生科技创新活动计划(新苗人才计划)项目(2018R403067)

摘  要:通过考察好氧颗粒污泥特征、比耗氧速率(SOUR)、处理效果和菌群的变化,探索常温储存实际低碳源废水培养出的好氧颗粒污泥的可行性.试验结果表明,常温清水储存60d后颗粒结构未出现明显解体;污泥浓度由4960mg/L小幅降低至4740mg/L,但沉降性能保持良好(SVI为24.2mL/g);SOUR整体下降较小(16%),尤其是硝化菌的SOUR;污泥菌群在门和属水平上的相对丰度均发生了变化.在恢复运行后,颗粒形态恢复快且良好,粒径在长期运行后明显增大(200~250μm);污泥沉降性能始终保持良好(SVI﹤20mL/g),SOUR在运行20d后既能恢复;运行11d后COD处理效果完全恢复(平均出水COD为53mg/L),运行5d后NH_4^+-N处理效果完全恢复(平均出水NH_4^+-N为0.7mg/L).常温清水储存好氧颗粒污泥不仅操作方便,而且反应器能快速恢复稳定运行,具有显著的实际应用价值.To investigate the feasibility of room-temperature storage of aerobic granular sludge(AGS)cultivated by real and low-strength wastewater,the variations of AGS characteristics,specific oxygen uptake rate(SOUR),removal efficiency and microbial community were explored.The experimental results show that after60days storage using tap water at room-temperature,the structure of AGS was still intact and did not disintegrate obviously.The mixed liquor suspended solids(MLSS)slightly decreased from4960mg/L to4740mg/L,but the settling property maintained well(SVI:24.2mL/g).The decrease in SOUR was very slight(16%),especially for the SOUR of nitrifying bacteria.The abundance of microbial community changed at the phylum and genus level.After restarting the reactor,AGS morphology recovered quickly and the granule size increased after long-term operation(200~250μm).The sludge settling property has always maintained well(SVI<20mL/g),and the SOUR recovered soon after20days operation.The COD removal efficiency was completely recovered after11days operation(around53mg/L in the effluent).The NH4^+-N removal efficiency was also completely recovered after5days operation(around0.7mg/L in the effluent).AGS storage at room-temperature has significant value in practical application due to its convenient operation and fast recovery of reactor stable operation.

关 键 词:实际低碳源废水 常温储存 好氧颗粒污泥 活性恢复 

分 类 号:X703[环境科学与工程—环境工程]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象