Department of Civil & Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan City, Kyeonggido 426-791, Republic of Korea.
Bioresour Technol. 2014 Jan;151:78-84. doi: 10.1016/j.biortech.2013.10.025. Epub 2013 Oct 22.
Compact and structurally stable aerobic granules were developed in a sequencing batch reactor (SBR) at mesophilic temperatures (35°C). The morphological, biological and chemical characteristics of the aerobic granulation were investigated and a theoretical granulation mechanism was proposed according to the results of the investigation. The mature aerobic granules had compact structure, small size (mean diameter of 0.24 mm), excellent settleability and diverse microbial structures, and were effective for the removal of organics and nitrification. The growth kinetics demonstrated that the biomass growth depended on coexistence and interactions between heterotrophs and autotrophs in the granules. The functions of heterotrophs and autotrophs created a compact and secure layer on the outside of the granules, protecting the inside sludge containing environmentally sensitive and slow growing microorganisms. The mechanism and the reactor performance may promise feasibility and efficiency for treating industry effluents at mesophilic temperatures using aerobic granulation.
在中温（35°C）条件下，采用序批式反应器（SBR）成功培养出了结构紧凑、性能稳定的好氧颗粒。本研究考察了好氧颗粒的形态学、生物学和化学特性，并根据研究结果提出了理论的颗粒化机制。成熟的好氧颗粒具有结构紧凑、粒径小（平均直径为 0.24mm）、沉降性能好、微生物结构多样化等特点，对有机物去除和硝化具有良好的效果。生长动力学研究表明，颗粒内的生物量增长取决于异养菌和自养菌的共存和相互作用。异养菌和自养菌的功能在颗粒的外部形成了一个紧凑和安全的层，保护了内部含有环境敏感和生长缓慢的微生物的污泥。该机制和反应器性能可能为在中温条件下利用好氧颗粒处理工业废水的可行性和效率提供了保证。
