污泥热水解-厌氧发酵系统性能优化研究  

Study on Pilot-scale Performance Optimization of Sludge Thermal Hydrolysis-anaerobic Fermentation System

作　　者：但婷星 杨鹏 宋闯 闫旭升 刘研萍[4] DAN Tingxing;YANG Peng;SONG Chuang;YAN Xusheng;LIU Yanping(School of life sciences,Capital Normal University,Beijing 100048,China;Science and technology research and development center of Beijing Urban Drainage Group Co Ltd,Beijing 100124,China;Tieling Ecological Environment Bureau,Tieling 112000,China;Department of environmental science and engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]首都师范大学生命科学学院,北京100048 [2]北京排水集团科技研发中心,北京市污水资源化工程技术研究中心,北京100124 [3]辽宁省铁岭生态环境监测中心,辽宁铁岭112000 [4]北京化工大学环境科学与工程系,北京100029

出　　处：《中国沼气》2023年第1期31-39,共9页China Biogas

基　　金：北京市科技计划(Z181100002418017);国家水体污染控制与治理科技重大专项(2017ZX07403002-05)。

摘　　要：“热水解预处理+厌氧发酵”作为污泥处理的主要技术之一,其规模化工艺优化尤为重要,为此开展了中试规模研究,分析在30 min条件下不同温度(150℃、160℃、170℃和180℃)和160℃条件下不同时间(15 min、30 min、45 min和60 min)的热水解处理对污泥的理化性质及其厌氧发酵产沼气性能的影响。研究结果表明,污泥经不同温度和不同时间热水解处理后固体物质溶出、流变性能改善、沉降性变好,溶解性固体(DS)含量为原泥的4.6~6.4倍,化学需氧量(COD)溶出率提高21.3%~30%,产沼气提升35%以上,可为热水解预处理工业化应用提供参考。For the efficient utilization of sludge, the technology of "thermal hydrolysis pretreatment + anaerobic fermentation" has became a common technical means for sludge treatment. In this paper, effects of pretreatment on the physical and chemical properties of sludge and its biogas production were investigated at pilot scale at 30 min-different temperatures(150℃、160℃、170℃ and 180℃).In addition, different experiment time such as15 min、30 min、45 min and 60 min at 160 ℃ were also investigated. The results showed that after treatment by thermal hydrolysis at different temperatures and times, both the rheological properties of sludge and settling property were improved. The DS content was 4.6~6.4 times that of the original sludge, and the COD dissolution rate was increased by 21.3%~30%.The production of biogas increased by more than 35%, which provided a reference for the industrial application of thermal hydrolysis pretreatment.

关 键 词：热水解 厌氧发酵 污泥减量化 污泥沉降性能 

分 类 号：S216.4[农业科学—农业机械化工程] X703[农业科学—农业工程]