热水解污泥-香蕉秸秆改善厌氧消化性能实验  

IMPROVING ANAEROBIC DIGESTIBILITY OF SLUDGE PRETREATED BY THERMAL HYDROLYSIS AND BANANA STRAW ADDED

作　　者：邓清华[1,2] 张健 冼萍[4] 方晴 蒙政成 DENG Qing-hua;ZHANG Jian;XIAN-Ping;FANG Qing;MENG Zheng-cheng(College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Guangxi Zhuang Autonomous Region Government Investment Project Evaluation Center,Nanning 530022,China;College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China;College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院,南宁530004 [2]广西壮族自治区政府投资项目评审中心,南宁530022 [3]广西大学轻工与食品工程学院,南宁530004 [4]广西大学资源环境与材料学院,南宁530004

出　　处：《环境工程》2020年第5期144-149,共6页Environmental Engineering

基　　金：国家自然科学基金项目(21167003);广西自然科学基金项目(2016GXNSFAA380294)。

摘　　要：采用添加高有机质含量的香蕉秸秆协同厌氧以及高温高压热水解预处理的方法,可显著提高低有机质污泥甲烷产率和厌氧消化性能。生化甲烷潜力实验结果表明:经过预处理后的污泥、香蕉秸秆及其混合物厌氧消化最大累积甲烷产量分别为388,372,537 mL/gVS,甲烷提升产量及协同效应显著。在污泥、香蕉秸秆及其混合物各自的最佳预处理条件下,甲烷产量达到80%的时间(T80)分别为12,19,17 d;SCOD溶出值分别为预处理前的14.4,2.8,5.9倍;厌氧消化结束后,SCOD去除率分别为93.7%、89.8%、94.5%;VS去除率分别为48.4%、48.8%、59.2%;热水解预处理使液相中溶解性蛋白质和VFA、溶解性多糖的浓度增加明显,分别为预处理前的14.5,5.1,8.2倍,随后的厌氧消化阶段的去除率分别为94.4%、94.9%和95.2%,稍高于单独厌氧消化的有机质降解率。The anaerobic biodegradability and methane yield of the low organic municipal sludge could be significantly improved on anaerobic co-digestion,by combing banana straw with high temperature thermal hydrolysis pretreatment(HTHP).In the combining system of anaerobic co-digestion and HTHP,the methane yield of municipal sludge,banana straw and their mixture were 388,372,537mL/gVS,respectively,which showed the significant synergistic effect.In their own optimal pretreatment condition of sludge,banana straw and their mixture,the T80 was 12,19,17 days,respectively,which could be represented as hydraulic retention time of anaerobic digestion;SCOD dissolution ratio was respectively 14.4,2.8,and 5.9 times of those before pretreatment;SCOD removal rate was 93.7%,89.8%and 94.5%after anaerobic digestion,and the removal rate of VS was 48.4%,48.8%and 59.2%,respectively.The concentration of soluble protein,VFA and soluble polysaccharide were increased significantly,which was 14.5,5.1 and 8.2 times of that before HTTP,and the removal rate was 94.4%,94.9%and 95.2%in the subsequent anaerobic digestion stage,which was slightly higher than single treatment.

关 键 词：市政污泥 香蕉秸秆 高温高压热水解预处理 生化甲烷潜力 厌氧消化 

分 类 号：X70[环境科学与工程—环境工程]