热水解对初沉污泥高温厌氧消化产气性能的影响研究
Study on the Influence of Thermal Hydrolysis on the Gas Production Performance of Primary Sludge by High Temperature Anaerobic Digestion
张雪 1王恒2
作者信息
- 1. 山东环发海若环境技术有限公司,山东 青岛 266000
- 2. 山东碧水源环保科技有限公司,山东 济南 250101
- 折叠
摘要
厌氧消化是目前城市污水处理厂处理污泥的主要方式,传统污泥厌氧消化有机物转化率和产气性能都较低,采用热水解结合高温厌氧消化进行小试试验,考察热水解工艺对初沉污泥高温厌氧消化产气性能的影响.试验结果表明,热水解后初沉污泥最大粒径、平均粒径和中值粒径分别是处理前的 0.49 倍、0.55 倍和 0.51 倍,污泥中可以被厌氧微生物分解的有机物含量明显提升,COD溶出率达到 27.1%.热水解处理之后的初沉污泥相较于处理之前单位VS总产气量提高了 21.93%,有机物转化率提高了 4.93%,热水解工艺有效提高了初沉污泥高温厌氧消化的产气性能.
Abstract
At present,anaerobic digestion is the main way to treat sludge in municipal sewage treatment plants,and the traditional anaerobic digestion of sludge has low organic conversion and gas production performance.A pilot test was conducted using thermal hydrolysis combined with high temperature anaerobic digestion to investigate the influence of thermal hydrolysis process on the high temperature anaerobic digestion gas production performance of primary sludge.The test results show that the maximum particle size,average particle size and median particle size of the initial sludge after thermal hydrolysis are 0.49 times,0.55 times and 0.51 times,respectively,the content of organic matter in the sludge that can be decomposed by anaerobic microorganisms is significantly increased,and the COD dissolution rate reaches 27.1%.Compared with that before the treatment,the total gas production per unit VS of the initial sludge was increased by 21.93%,and the conversion rate of organic matter was increased by 4.93%.The thermal hydrolysis process effectively improved the gas production performance of the initial sludge during high temperature anaerobic digestion.
关键词
初沉污泥/热水解/高温厌氧消化/厌氧消化产气量Key words
primary sludge/thermal hydrolysis/high temperature anaerobic digestion/anaerobic digestion gas production引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据