EFFECT OF ELECTROCHEMICAL PRETREATMENT ON PRODUCTION OF VOLATILE FATTY ACIDS BY CO-ANAEROBIC FERMENTION OF FOOD WASTE AND SEWAGE SLUDGE

CHEN Yi-shuang; WEI Tao-yuan; ZHOU Tao; DONG Ding-shuo; LIN Qing-shan; WANG Zong-ping; GUO Gang

doi:10.13205/j.hjgc.202109026

Volume 39 Issue 9

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(9): 187-192

CHEN Yi-shuang, WEI Tao-yuan, ZHOU Tao, DONG Ding-shuo, LIN Qing-shan, WANG Zong-ping, GUO Gang. EFFECT OF ELECTROCHEMICAL PRETREATMENT ON PRODUCTION OF VOLATILE FATTY ACIDS BY CO-ANAEROBIC FERMENTION OF FOOD WASTE AND SEWAGE SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 187-192. doi: 10.13205/j.hjgc.202109026

Citation:

CHEN Yi-shuang, WEI Tao-yuan, ZHOU Tao, DONG Ding-shuo, LIN Qing-shan, WANG Zong-ping, GUO Gang. EFFECT OF ELECTROCHEMICAL PRETREATMENT ON PRODUCTION OF VOLATILE FATTY ACIDS BY CO-ANAEROBIC FERMENTION OF FOOD WASTE AND SEWAGE SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 187-192. doi: 10.13205/j.hjgc.202109026

Citation:

CHEN Yi-shuang, WEI Tao-yuan, ZHOU Tao, DONG Ding-shuo, LIN Qing-shan, WANG Zong-ping, GUO Gang. EFFECT OF ELECTROCHEMICAL PRETREATMENT ON PRODUCTION OF VOLATILE FATTY ACIDS BY CO-ANAEROBIC FERMENTION OF FOOD WASTE AND SEWAGE SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 187-192. doi: 10.13205/j.hjgc.202109026

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EFFECT OF ELECTROCHEMICAL PRETREATMENT ON PRODUCTION OF VOLATILE FATTY ACIDS BY CO-ANAEROBIC FERMENTION OF FOOD WASTE AND SEWAGE SLUDGE

doi: 10.13205/j.hjgc.202109026

1. School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China;
2. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
3. Unilever(China) Co., Ltd, Shanghai 200051, China;
4. School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 2020-11-05
Available Online: 2022-01-21

Abstract

Abstract

Volatile fatty acids (VFAs), produced by co-anaerobic fermentation food waste and sewage sludge, have widely economic and practical value. This study investigated the effects of different food waste ratios of food waste-sewage sludge (control, 0%, 5% and 10%) for co-anaerobic fermentation of food waste and sewage sludge on the production of VFAs with 1 Volt electrochemical pretreatment. The results showed that under the electrochemical pretreatment, the concentration of soluble COD increased rapidly up to 969~1266 mg/L with the food waste ratios increased from 0% to 10%, and then it was converted to VFAs. Especially, the highest VFAs production achieved at 132.2 mg/L within 15 days when the food waste ratio accounting for 10% of food waste-sewage sludge. This study proved that 1 Volt electrochemical pretreatment could improve the characteristics of food waste-sewage sludge and accelerate their co-anaerobic fermentation. At the same time, food waste addition could increase the content of organic matters in sewage sludge, which further increased the VFAs production to realize the resource utilization.
- electrochemical pretreatment,
- food waste,
- sewage sludge,
- co-anaerobic fermentation,
- volatile fatty acids

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References(21)

References

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