电化学预处理对餐厨垃圾-污泥耦合厌氧发酵产挥发性脂肪酸的影响

陈沂塽; 魏桃员; 周涛; 董丁硕; 林青山; 王宗平; 郭刚

doi:10.13205/j.hjgc.202109026

电化学预处理对餐厨垃圾-污泥耦合厌氧发酵产挥发性脂肪酸的影响

doi: 10.13205/j.hjgc.202109026

1. 武汉科技大学城市建设学院, 武汉 430065;
2. 同济大学环境科学与工程学院, 上海 200092;
3. 联合利华中国有限公司(中国), 上海 200051;
4. 华中科技大学环境科学与工程学院, 武汉 430074

基金项目:

国家重点研发计划（2019YFC1904005）。

详细信息

作者简介:
陈沂塽(1995-),男,硕士,主要研究方向为水处理及环境保护。2261670571@qq.com

通讯作者:
郭刚(1987-),男,副教授,主要研究方向为污水、污泥处理及资源化。ceguogang@hust.edu.cn

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出版历程
- 收稿日期: 2020-11-05
- 网络出版日期: 2022-01-21

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

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

摘要

摘要: 利用餐厨垃圾-污泥耦合厌氧发酵产挥发性脂肪酸（volatile fatty acids，VFAs）具有广泛的经济和应用价值。本实验考察了在1 V电化学预处理条件下，研究餐厨垃圾占比（空白对照，0%，5%，10%，质量分数）对厌氧发酵生成VFAs产量的影响，从而得出产VFAs的最优条件。研究表明：经过60 min 1 V电化学预处理后，随着餐厨垃圾占比从0%增加到10%，水体中溶解性COD浓度随时间变化迅速增加，最高可达到969~1266 mg/L，随着厌氧发酵的进行转化成VFAs。其中，当餐厨垃圾占比为10%时，VFAs在15 d内最高浓度可达到132.2 mg/L。实验结果表明，电化学预处理可改善餐厨垃圾-污泥特性，加快厌氧发酵过程，同时餐厨垃圾可增加污泥中有机质含量，增加VFAs产量，实现餐厨垃圾-污泥产VFAs的资源化利用途径。
- 电化学预处理技术 /
- 餐厨垃圾 /
- 污泥 /
- 耦合厌氧发酵 /
- 挥发性脂肪酸
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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