Performance Comparison of CSTR and CSFBR in Anaerobic Co-Digestion of Food Waste with Grease Trap Waste
Performance Comparison of CSTR and CSFBR in Anaerobic Co-Digestion of Food Waste with Grease Trap Waste
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DOI：
10.3390/en15238929
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发表时间：
2022-11
期刊：
影响因子：
3.2
通讯作者：
Yong Hu;Haiyuan Ma;Jiang Wu;Takurou Kobayashi;Kaiqin Xu
中科院分区：
文献类型：
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作者：
Yong Hu;Haiyuan Ma;Jiang Wu;Takurou Kobayashi;Kaiqin Xu
在本研究中，一种新搭建的实验室规模的嗜热连续搅拌流化床反应器（CSFBR）被用于餐厨垃圾（FW）与隔油池废弃物（GTW）的厌氧共消化。通过与两个传统的连续搅拌釜式反应器（CSTR）进行实验室对比实验，考察了CSFBR在稳定性和处理效率方面的性能。在3.19 - 7.41克化学需氧量（COD）/升/天的有机负荷率（OLR）范围内，嗜热CSFBR的甲烷产率与嗜热CSTR大致相当。然而，与嗜热CSTR相比，嗜热CSFBR的挥发性脂肪酸（VFAs）浓度低得多（<1000毫克/升），长链脂肪酸（LCFA）浓度也更低（<100毫克/升）。与中温CSTR不同，在整个实验期间，CSFBR中未出现泡沫现象。所有结果表明，CSFBR在高油脂负荷的厌氧消化过程中，同时具备较高的处理能力和工艺稳定性。
In this study, a newly established bench-scale thermophilic continuously stirred fluidized bed reactor (CSFBR) was applied for anaerobic co-digestion of food waste (FW) with grease trap waste (GTW). The performance of CSFBR regarding stability and treatment efficiency was inspected through a laboratory contrast experiment with two traditional continuous stirred tank reactors (CSTRs). In the OLR range of 3.19–7.41 g COD/L/d, the methane production rate of the thermophilic CSFBR was about as high as that of the thermophilic CSTR. Nevertheless, the thermophilic CSFBR had much lower VFAs (<1000 mg/L) and LCFA concentrations (<100 mg/L) as compared with the thermophilic CSTR. Unlike the mesophilic CSTR, there was no foaming that occurred in the CSFBR during the whole experimental period. The results all suggested that CSFBR simultaneously provided high treatment capacity and process stability in anaerobic digestion with high-lipid loading.