甘蔗糖蜜酒精废水高效厌氧消化过程及其关联微生物菌群响应机制的研究

Sugar cane molasses alcohol wastewater, is hard to be treated and cleaned, has had affected the extension of the industrial chain of the alcohol and sugar industry in Guangxi. How to deal with this kind of waste water has also become a scientific and technological problem urgently to be solved. However，at present，few economic and effective methods are reported, and no research about basic theory has been published. On the basis of our successful anaerobic treatment of sugar cane molasses alcohol wastewater, this study will apply two feeding patterns combined with traditional training method to anaerobic digest the wastewater, clarify the degradation process of the main components of waste water, investigate the effect of treatment, analyze the dynamic variation of microbial community activities, function and construction based on 16s metagenomics and isolated culture methods. Response mechanism of microbial flora under different feeding methods will be uncovered. Results of this project will supply the theoretical base for shorting startup time, promoting the OLR and finding an efficient anaerobic treatment of cane molasses alcohol wastewater or other wastewater.

蔗糖业是广西重要的支柱产业，制糖产生的糖蜜主要用于生产酒精，但由此产生的甘蔗糖蜜酒精废水极难处理，目前鲜有经济有效的处理方法，相关基础理论更是匮乏。该废水的净化处理难题严重制约了广西酒精行业和制糖产业链的延伸，成为亟待解决的技术问题。本项目拟在课题组前期较为成功的处理工艺基础上，进一步深入研究厌氧处理过程中甘蔗糖蜜酒精废水主要组分的分解过程和特点，结合关联微生物群落结构及其变化规律、可培养功能微生物种类、发酵效率及稳定性，阐明甘蔗糖蜜酒精废水特征组分厌氧降解的主要过程和微生物学理论，以及不同进样方式下微生物菌群的响应机制。研究成果可为高效利用微生物调控厌氧处理糖蜜酒精废水提供重要理论依据，为其他废水厌氧处理工艺提供理论支持与参考。