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"The key technologies and applications of high-concentration anaerobic fermentation of mixed raw materials for biogas production"
On April 28th, the Guangzhou Branch of the Chinese Academy of Sciences hosted a scientific and technological achievement appraisal meeting for the project titled “Key Materials Technology and Application of Biofuels Prepared by High Concentration Anaerobic Fermentation of Mixed Raw Materials.†The event was organized by the Department of Science and Technology of Guangdong Province and took place at the Guangzhou Energy Research Institute.
The appraisal committee was composed of seven experts from various universities and research institutions across China. Professor Liu Yingshu served as the chairman, while Professors Dong Renjie and Ruan Chaoping acted as vice chairmen. Representatives from the Guangzhou Branch, including Deputy Director Zhou Xiaoyun, along with Wu Chuangzhi, Director of the Guangzhou Energy Institute, Jiang Yang, Deputy Director of the Science and Technology Department, and the project team members, were present. The meeting was chaired by Zhou Xiaoyun.
During the session, the project leader Yuan Zhenhong presented a detailed work summary and research report. The committee also conducted an on-site inspection and engaged in thorough discussions and Q&A sessions.
The expert panel unanimously agreed that the project’s submitted materials were complete and met all the requirements for evaluation. The project successfully established an anaerobic fermentation database covering over 140 types of raw materials, along with compatibility equations for different feedstocks. It introduced innovative technologies such as straw pretreatment, wastewater selection for domestic waste, and high-concentration anaerobic fermentation of mixed materials. Key equipment, including a domestic waste water selection unit, a high-concentration feeding device, and a high-concentration mixed material anaerobic reactor, was developed. A high-efficiency, continuous, and stable process for anaerobic fermentation of mixed raw materials was also created, significantly boosting biogas production rates. Additionally, a demonstration project with a capacity of 500m³ was built, focusing on the enrichment of fermentation materials through wastewater selection and promoting practical applications.
The project demonstrated significant innovations in raw material pretreatment, nutritional compatibility, and the anaerobic fermentation process and equipment. It has reached international advanced levels and passed the appraisal. The committee recommended further efforts to promote and apply the technology in broader fields.