Source Jouranl of CSCD
Source Journal of Chinese Scientific and Technical Papers
Included as T2 Level in the High-Quality Science and Technology Journals in the Field of Environmental Science
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ZHOU Yu-qi, CAO Qi, XU Jun-chao, LIU Chang-qing, ZHUO Gui-hua, CHEN Jian-yong, ZHENG Yu-yi. INFLUENCE OF DIFFERENT SOURCE SUBSTRATE SYSTEMS ON METHANOGENESIS OF RESIDUE FROM ANAEROBIC FERMENTATIVE HYDROGEN PRODUCTION USING COMBINED SLUDGE AND FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 123-130. doi: 10.13205/j.hjgc.202109018
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

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