三维电解强化木醋液废水可生化性  

ENHANCED EFFECT OF THREE-DIMENSIONAL ELECTROLYSIS ON BIODEGRADABILITY OF WOOD VINEGAR WASTEWATER

作　　者：范庆文 李岩 华栋梁 赵玉晓 陈雷 刘素香 Fan Qingwen;Li Yan;Hua Dongliang;Zhao Yuxiao;Chen Lei;Liu Suxiang(Energy Research Institute,Qilu University of Technology(Shandong Academy of Sciences),Shandong Provincial Key Laboratory of Biomass Gasification Technology,Ji’nan 250014,China;Shandong Innovation Center of Bioengineering Technology,Heze 274000,China;School of Energy and Power Engineering,Qilu University of Technology(Shandong Academy of Sciences),Ji’nan 250014,China)

机构地区：[1]齐鲁工业大学(山东省科学院)能源研究所,山东省生物质气化技术重点实验室,济南250014 [2]山东省生物工程技术创新中心,菏泽274000 [3]齐鲁工业大学(山东省科学院)能源与动力工程学院,济南250014

出　　处：《太阳能学报》2022年第2期10-15,共6页Acta Energiae Solaris Sinica

基　　金：山东省高等学校青年创新团队项目(2019KJD002);济南市科技计划(201913013);山东省生物工程技术创新中心重大创新项目(2019JSWGCCXZX002);山东省自然科学基金(ZR2018LB031)。

摘　　要：该文主要研究不同有机负荷发酵条件下废水的毒性作用规律,并考察三维电解技术的解毒效果。实验结果表明,随着有机负荷的升高,产甲烷活性抑制程度逐渐增强且COD去除率急剧降低,在4 g COD/L时产甲烷抑制率达到38.2%。结合高通量测序技术对发酵过程中细菌和古菌进行分析,发现微生物菌群结构发酵前后变化较为明显。而经优化的三维电解条件(电解时间90 min,电压5 V,pH=6,铁炭添加量140 g/L)对木醋液进行预处理后,4 g COD/L木醋液的甲烷产率由223.1 mL/g COD提升至344.2 mL/g COD,而抑制率降至11.2%。三维电解对于改善木醋液的可生化性及提高厌氧发酵效率有较为明显的效果。In this experiment,the toxicity of wastewater under different organic loads is studied,and the detoxification of threedimensional electrolysis technology is investigated. The experimental results show that with the increase of organic loads,the inhibitory degree of methanogenic activity is gradually enhanced and the COD removal rate is sharply reduced. The inhibition rate of methanogenic process reaches 38.2% at 4 g COD/L. Combining with the high-throughput sequencing technology,the analysis of bacteria and archaea during fermentation reveals that the microbial community structure is significantly affected before and after fermentation. After the pretreatment of wood vinegar by the optimized three-dimensional electrolysis conditions(electrolysis time 90 min,voltage 5 V,pH=6,iron and carbon concentration 140 g/L),the methane yield at 4 g COD/L of wood vinegar increases from223.1 mL/g COD to 344.2 m L/g COD,and the inhibition rate decreased to 11.2%. In summary,three-dimensional electrolysis has an obvious effect on improving the bioavailability and anaerobic fermentation efficiency of wood vinegar.

关 键 词：厌氧发酵 毒性作用 废水处理 木醋液 三维电解 微生物菌群 

分 类 号：X703[环境科学与工程—环境工程]