好氧污泥-微藻耦合颗粒的培养及特性研究

发布时间：2018-03-25 21:08

本文选题：废水处理　切入点：生物质能源　出处：《中国环境科学》2017年07期

【摘要】：研究以好氧颗粒污泥为生物载体、小球藻与栅藻为接种微藻,开展了菌藻耦合颗粒化系统构建与解析工作,并考察了选择压关键因子—沉降时间的作用影响.研究结果指出好氧污泥与微藻可形成稳定的耦合颗粒体,沉降时间会影响耦合进度,但其并非耦合实现的决定性因素.在稳态颗粒性质方面,沉降时间差异设定会显著影响耦合颗粒的沉降性能、氮素去除能力、粒径大小及生物柴油产量(P0.05),但耦合颗粒的微生物表面电荷、关键脂肪酸甲酯组分及磷素去除能力对其作用响应并不显著(P0.05).蓝藻和真核藻类在颗粒中所占比例约为5%和95%,接种微藻在真核藻类群落中可保持主导地位(相对丰度98%),但不同沉降时间处置下小球藻和栅藻在颗粒体中相对优势性具有明显区别.
[Abstract]:Using aerobic granular sludge as biological carrier and chlorella and chlamydomonas as inoculation microalgae, the construction and analysis of microalgae coupling granulation system were carried out. The effect of selective pressure key factor-settling time was investigated. The results showed that aerobic sludge and microalgae could form stable coupling particles, and sedimentation time would affect the coupling progress. However, it is not the decisive factor in the realization of coupling. In terms of steady state particle properties, the setting of settling time difference will significantly affect the sedimentation performance of coupling particles and the nitrogen removal capacity. The particle size and the yield of biodiesel are P0.05N, but the surface charge of the microorganism is coupled with the particle. The key fatty acid methyl ester components and phosphorus removal ability were not significant (P0.05). The proportion of cyanobacteria and eukaryotic algae in the granules was about 5% and 95%, and microalgae inoculated in eukaryotic algae community could maintain the dominant position (relatively abundant algae community). However, the relative dominance of Chlorella vulgaris and Chlorella sp. in granular bodies was significantly different at different settling times.
【作者单位】：中国科学院城市环境研究所中国科学院城市污染物转化重点实验室;中国科学院大学;
【基金】：国家自然科学基金资助项目(51308523) 厦门市科技计划项目(3502Z20162001) 厦门理工学院创新项目(201611062288)
【分类号】：Q949.2;X703

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