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《Modern Agricultural Science and Technology》 2017-23
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Design of Two-phase Anaerobic Digester and Start-up Method

YANG Hong-yan;YIN Fang;ZHAO Xing-ling;LIU Jing;YANG Hong;WANG Chang-mei;LIU Shi-qing;ZHANG Wu-di;School of Energy and Environment Science,Yunnan Normal University;  
In this paper,two digester(UASB and EGSB)were series-coupled,which were designed and applied to treatment of pig manure wastewater.Due to the difference of reproductive characteristics between obligate H_2-producing acetogenic bacteria and methanogens,the traditional anaerobic fermentation process is not beneficial for methanogens and the obligate H_2-producing acetogenic bacteria.Two-phase anaerobic process make the two anaerobic process in the more suitable for different fermentation.Due to the two stage of the producing acid and methane are independent and simultaneous,the acidification digester has a certain buffer action.It can alleviate the impact of shock load on the subsequent methane production digester,so the reaction rate of anaerobic digestion can be improved.The purpose of this experiment is to couple the hydrogen and methane together,and to discuss some factors on the effect of pig manure two-phase anaerobic fermentation.It ′s hoped to find the optimal anaerobic fermentation conditions in order to maximize the energy conversion efficiency of raw materials,and to provide a reference for the implementation of two-phase anaerobic process.
【Fund】: 国家自然科学基金(51366015);; 云南省应用基础研究基金重点项目(2014FA030);; 云南省新能源重大专项项目(2015ZB001 2015ZB005);; 云南省农村能源工程重点实验室基金(2016);; 西南地区可再生能源研究与开发协同创新中心(05300205020516009)
【CateGory Index】: X713
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