菌藻共生好氧颗粒污泥的分形特征研究

doi:10.16088/j.issn.1001-6600.2021082104

Abstract

Abstract: 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.

Key words: bacteria and algae symbiosis, aerobic granular sludge, SBR process, box dimension, fractal characteristics

CLC Number:

X703.1

CHEN Qingfeng, YU Zhe, HUANG Shiqi, YAO Duyang, CHEN Wei, WANG Zongping. Research on Fractal Characteristics of Algal-bacterial Granular Sludge[J].Journal of Guangxi Normal University(Natural Science Edition), 2022, 40(6): 163-172.

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Research on Fractal Characteristics of Algal-bacterial Granular Sludge

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