PMS协同介质阻挡放电对污泥水解及厌氧产酸效果的影响  

Effect of PMS and Dielectric Barrier Discharge on Sludge Hydrolysis and Anaerobic Acid Production

作　　者：刘涛 杨长河[1] 杨依 LIU Tao;YANG Chang-he;YANG Yi(School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学建筑工程学院,江西南昌330031

出　　处：《水电能源科学》2020年第10期29-33,共5页Water Resources and Power

基　　金：江西省自然科学青年基金项目(2007GZC0075);江西省教育厅科学技术研究项目([2007]51)。

摘　　要：鉴于强化污泥水解对于改善厌氧产酸效果的重要作用,在分析介质阻挡放电(DBD)、过一硫酸盐(PMS)单独破解污泥的反应参数及结果后,将两者进行联合,探讨联合反应后污泥水解及厌氧产酸效果的变化。结果表明,DBD放电或PMS单独处理对于污泥水解效果有限,当两者联合后,污泥的水解效果显著提高,说明PMS能被放电活化从而产生协同作用,其最佳反应条件为放电电压11kV、频率10kHz、时间20min、PMS投加量n(HSO5-)=1.0mmol/gTS;HO·、SO4^-·为参与反应的重要活性物质;剩余污泥经预处理后能显著提高厌氧发酵系统中挥发酸的产量,并促进多碳酸向乙酸转化。Enhanced sludge hydrolysis plays an important role in improving the effect of anaerobic acid production.After analyzing the reaction parameters and results of Dielectric Barrier Discharge and Permonosulfuric Acid separately cracking the sludge,the two are combined to explore the effect of sludge hydrolysis and anaerobic acid production.The results show that the DBD discharge or PMS treatment has limited effect on sludge hydrolysis;When the two are combined,the hydrolysis effect of sludge is significantly improved,indicating that PMS can be activated by discharge to produce synergy,and the best reaction condition is discharge voltage 11 kV,frequency 10 kHz,time 20 min,and PMS dosage n(HSO5-)=1.0 mmol/gTS.The HO·and SO4^-·are important active substances participating in the reaction.In addition,the remaining sludge after pretreatment can significantly increase the output of volatile acids in the anaerobic fermentation system and promote the conversion of polycarbonic acid to acetic acid.

关 键 词：过一硫酸盐 介质阻挡放电 污泥水解 自由基清除 厌氧产酸 

分 类 号：X703[环境科学与工程—环境工程]