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

计量
- 文章访问数: 197
- HTML全文浏览量: 38
- PDF下载量: 4
- 被引次数: 0
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

HTML全文

参考文献(21)

[1]	LIANG J L,GU H Q,ZHANG S W.Novel insight into sludge dewaterability mechanism using polymeric aluminium ferric chloride and anaerobic mesophilic digestion treatment under ultrahigh pressure condition[J].Separation and Purification Technology,2020,234:116137.
[2]	DING W Q,JIN W B,ZHOU X.A comparative study of waste activated sludge conditioning with Fe(Ⅱ)-peroxymonosulfate oxidative process[J].Bioresource Technology Reports,2020,11:100434.
[3]	XIAO K K,ZHOU Y.Protein recovery from sludge:a review[J].Journal of Cleaner Production,2020,249:119373.
[4]	DAI X H,DUAN N N,DONG B,et al.High-solids anaerobic co-digestion of sewage sludge and food waste in comparison with mono digestions:stability and performance[J].Waste Management,2013,33(2):308-316.
[5]	XU Y,LU Y Q,ZHENG L K,et al.Perspective on enhancing the anaerobic digestion of waste activated sludge[J].Journal of Hazardous Materials,2020,389:121847.
[6]	ZHOU Y,ENGLER N,NELLES M.Symbiotic relationship between hydrothermal carbonization technology and anaerobic digestion for food waste in China[J].Bioresource Technology,2018,260:404-412.
[7]	WU S L,WEI W,SUN J,et al.Medium-Chain fatty acids and long-chain alcohols production from waste activated sludge via two-stage anaerobic fermentation[J].Water Research,2020,186:116381.
[8]	ZENG Q,ZAN F X,HAO T W,et al.Electrochemical pretreatment for stabilization of waste activated sludge:simultaneously enhancing dewaterability,inactivating pathogens and mitigating hydrogen sulfide[J].Water Research,2019,166:115035.
[9]	李月寒.超声波预处理污泥和厨余共发酵产短链脂肪酸的研究[D].苏州:苏州科技大学,2016.
[10]	孔峰,戴雅,刘阳,等.电化学预处理对后续厌氧消化工艺的作用研究[J].水处理技术,2017,43(2):119-123.
[11]	ZAN F X,DAI J,HONG Y Z,et al.The characteristics of household food waste in Hong Kong and their implications for sewage quality and energy recovery[J].Waste Management,2018,74:63-73.
[12]	郑舍予.剩余污泥联合餐厨垃圾高温共发酵产酸研究[D].上海:华东理工大学,2019.
[13]	BOND P L,KELLER J,BLACKALL L L.Anaerobic phosphate release from activated sludge with enhanced biological phosphorus removal.A possible mechanism of intracellular pH control[J].Biotechnology Bioengineering,1999,63(5):507-515.
[14]	SOSNOWSKI P,KLEPACZ-SMOLKA A,KACZOREK K,et al.Kinetic investigations of methane co-fermentation of sewage sludge and organic fraction of municipal solid wastes[J].Bioresource Technology,2008,99(13):5731-5737.
[15]	李春梅.电化学氧化法对污泥减量的研究[D].哈尔滨:哈尔滨工业大学,2011.
[16]	LUO J Y,HUANG W X,GUO W,et al.Novel strategy to stimulate the food wastes anaerobic fermentation performance by eggshell wastes conditioning and the underlying mechanisms[J].Chemical Engineering Journal,2020,398:125560.
[17]	BOZKURT Y C,APUL O G.Critical review for microwave pretreatment of waste-activated sludge prior to anaerobic digestion[J].Current Opinion in Environmental Science & Health.2020,14:1-9.
[18]	周涛,李阳,宋楠,等.电刺激对餐厨垃圾-污泥共厌氧发酵产挥发性脂肪酸的影响[J].环境工程学报,2016,10(12):7195-7201.
[19]	de JONGE N,DAVIDSSON A,la COUR JANSEN J,et al.Characterization of microbial communities for improved management of anaerobic digestion of food waste[J].Waste Management,2020,117:124-135.
[20]	王国华,伊学农,王峰,等.餐厨垃圾与污水污泥共消化产酸试验研究[J].环境工程,2013,31(1):166-169.
[21]	CHENG J H,KONG F,ZHU J.Characteristics of oxidation-reduction potential,VFAs,SCOD,N,and P in an ATAD system under different thermophilic temperatures[J].Applied Biochemistry and Biotechnology,Part A.Enzyme Engineering and Biotechnology,2015,175(1):166-181.