Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
Bioresour Technol. 2019 Feb;273:40-48. doi: 10.1016/j.biortech.2018.10.055. Epub 2018 Oct 29.
Herein, a strengthened circulation anaerobic (SCA) reactor was employed for the treatment of actual alkali-decrement wastewater. The degradation mechanism of polyester oligomers and the relationship between the treatment performance and microbial community structure were systematically investigated using various advanced techniques. Results suggest that the accumulation of volatile fatty acids has an inhibitory effect on methanogenic activity. Molecular weight distributions suggest that only incomplete degradation of oligomers was achieved, due to acetogenic inhibition in the lower part of the SCA reactor. Meta-proteomic approach analysis revealed that the methanogens containing heterodisulfide reductase were the primary species involved in methane metabolism. Based on these findings, a possible degradation mechanism for alkali-decrement wastewater in the SCA reactor is proposed. This high-performance anaerobic reactor could be further scaled-up and optimized to serve as a promising and effective unit for the treatment of other refractory industrial wastewaters.
在此，采用强化循环厌氧（SCA）反应器处理实际碱减量废水。利用多种先进技术，系统研究了聚酯低聚物的降解机制以及处理性能与微生物群落结构之间的关系。结果表明，挥发性脂肪酸的积累对产甲烷活性有抑制作用。分子量分布表明，由于 SCA 反应器下部的产酸菌抑制作用，低聚物仅实现了不完全降解。元蛋白质组学分析表明，含有异二硫键还原酶的产甲烷菌是参与甲烷代谢的主要物种。基于这些发现，提出了 SCA 反应器中碱减量废水的可能降解机制。这种高性能厌氧反应器可以进一步放大和优化，作为处理其他难处理工业废水的有前途和有效的单元。
