Nguyen Dinh Duc, Yeop Jeong Seong, Choi Jaehoon, Kim Sungsu, Chang Soon Woong, Jeon Byong-Hun, Guo Wenshan, Ngo Huu Hao
Department for Management of Science and Technology Development & Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea.
Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea.
Waste Manag. 2017 Aug;66:161-168. doi: 10.1016/j.wasman.2017.03.049. Epub 2017 Apr 9.
Dry semicontinuous anaerobic digestion (AD) of South Korean food waste (FW) under four solid loading rates (SLRs) (2.30-9.21kg total solids (TS)/mday) and at a fixed TS content was compared between two digesters, one each under mesophilic and thermophilic conditions. Biogas production and organic matter reduction in both digesters followed similar trends, increasing with rising SLR. Inhibitor (intermediate products of the anaerobic fermentation process) effects on the digesters' performance were not observed under the studied conditions. In all cases tested, the digesters' best performance was achieved at the SLR of 9.21kg TS/mday, with 74.02% and 80.98% reduction of volatile solids (VS), 0.87 and 0.90m biogas/kg VS, and 0.65 (65% CH) and 0.73 (60.02% CH) m biogas/kg VS, under mesophilic and thermophilic conditions, respectively. Thermophilic dry AD is recommended for FW treatment in South Korea because it is more efficient and has higher energy recovery potential when compared to mesophilic dry AD.
在四个固体负荷率（2.30 - 9.21千克总固体（TS）/立方米·天）以及固定TS含量的条件下，对韩国食物垃圾进行干式半连续厌氧消化（AD），并在两个消化器之间进行比较，一个处于中温条件，另一个处于高温条件。两个消化器中的沼气产量和有机物减少情况遵循相似趋势，均随固体负荷率的升高而增加。在所研究的条件下，未观察到抑制剂（厌氧发酵过程的中间产物）对消化器性能的影响。在所有测试案例中，消化器在固体负荷率为9.21千克TS/立方米·天的情况下表现最佳，在中温条件下挥发性固体（VS）减少74.02%，每千克VS产生0.87立方米沼气，每千克VS产生0.65立方米沼气（CH含量为65%）；在高温条件下挥发性固体（VS）减少80.98%，每千克VS产生0.90立方米沼气，每千克VS产生0.73立方米沼气（CH含量为60.02%）。由于与中温干式厌氧消化相比，高温干式厌氧消化效率更高且具有更高的能量回收潜力，因此建议在韩国采用高温干式厌氧消化处理食物垃圾。
