采用扩展颗粒污泥床反应器对酶预处理后的食物垃圾进行高级厌氧消化：可行性及其性能。
Using an expended granular sludge bed reactor for advanced anaerobic digestion of food waste pretreated with enzyme: The feasibility and its performance.
机构信息
School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
出版信息
Bioresour Technol. 2020 Sep;311:123504. doi: 10.1016/j.biortech.2020.123504. Epub 2020 May 8.
The high content of solid organics in food waste (FW) results in a low and unstable anaerobic digestion (AD) efficiency. Improving methane production rate and process stability is attracting much attention towards advanced AD of FW. The feasibility of advanced AD of FW pretreated with enzyme was investigated by batch experiments and 164 days running of an expanded granular sludge bed (EGSB) reactor. Simulation study based on the results of batch experiments indicates it is possible to treat enzymatically pretreated FW using an EGSB reactor. During the running of an EGSB reactor, the organic loading rate went up to 20 g chemical oxygen demand (COD)/L.d, and the total COD removal rate reached 88%. The significance of this study is to achieve an advanced AD of enzymatically pretreated FW with a stable and efficient methane production with biogas residue being reduced greatly.
食物垃圾（FW）中固体有机物含量高，导致厌氧消化（AD）效率低且不稳定。提高甲烷产率和工艺稳定性引起了人们对 FW 高级 AD 的关注。通过分批实验和扩展颗粒污泥床（EGSB）反应器的 164 天运行，研究了用酶预处理 FW 的高级 AD 的可行性。基于分批实验结果的模拟研究表明，使用 EGSB 反应器处理酶预处理 FW 是可行的。在 EGSB 反应器运行过程中，有机负荷率提高到 20 g 化学需氧量（COD）/L.d，总 COD 去除率达到 88%。这项研究的意义在于实现酶预处理 FW 的高级 AD，以稳定高效地产生甲烷，并大大减少沼气残留物。
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