摘要
针对菌藻共生好氧颗粒污泥(algal-bacterial granular sludge,ABGS)的结构稳定性会影响运用ABGS污水处理工艺效能这一问题,基于不同曝气周期的SBR工艺,分析出水进水水质,并采用基于盒维数的分形维数计算方法,研究不同工况下ABGS的去除效能与分形特征。研究结果表明:在相同水力停留时间和相同曝气时间下,间歇时间小于等于2 h时,ABGS的去除效能和形态特征相似;在较高水平曝气量下,ABGS的COD、TP去除率较高,微藻的含量有效影响TP去除;ABGS的分形维数为1.78~1.83,且与好氧颗粒污泥的分形维数相似,分形维数越大,其结构越复杂、密实度越高、沉降性能越好。
The structural stability of algal-bacterial granular sludge(ABGS)would affect the efficiency of wastewater treatment process using ABGS.As a result,this article was based on different aeration period of SBR process and analysis of water quality.The fractal dimension calculation method based on box dimension was used to study the removal efficiency and fractal characteristics of ABGS under different working conditions.The results showed that under the same hydraulic retention time and aeration time,the removal efficiency and morphological characteristics of ABGS were similar in the intermittent aeration cycle time≤2 h.At a higher aeration rate,the removal rates of COD and TP of ABGS were higher,and the content of microalgae effectively affects the removal of TP.In addition,the fractal dimension of ABGS was between 1.78 and 1.83,which was similar to the morphological characteristics of aerobic granular sludge.The larger the fractal dimension was,the more complex the structure was,the higher the compactness was,and the better the settlement performance was.
作者
陈庆峰
余哲
黄诗琪
姚杜旸
陈威
王宗平
CHEN Qingfeng;YU Zhe;HUANG Shiqi;YAO Duyang;CHEN Wei;WANG Zongping(School of Urban Construction,Wuhan University of Science and Technology,Wuhan Hubei 430065,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan Hubei 430074,China)
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2022年第6期163-172,共10页
Journal of Guangxi Normal University:Natural Science Edition
基金
国家自然科学基金(51578259)
湖北省大学生创新创业训练计划(21ZA019)
长江水利委员会长江科学院开放研究基金(CKWV2018490/KY)。
关键词
菌藻共生
好氧颗粒污泥
SBR工艺
盒维数
分形特征
bacteria and algae symbiosis
aerobic granular sludge
SBR process
box dimension
fractal characteristics
