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高固体污泥微波热水解特性变化
引用本文:乔玮,王伟,荀锐,周刚,万晓,夏洲.高固体污泥微波热水解特性变化[J].环境科学,2008,29(6):1611-1615.
作者姓名:乔玮  王伟  荀锐  周刚  万晓  夏洲
作者单位:1. 清华大学环境科学与工程系,北京,100084
2. 北京师范大学环境学院,北京,100875
3. 健坤伟华新能源科技有限公司,北京,100085
基金项目:国家高技术研究发展计划(863计划)
摘    要:考察浓度7%、9%和13%的高固体污泥微波热水解特性,通过生化产甲烷潜能(BMP)实验,分析热处理污泥厌氧消化性能的变化.结果表明,微波加热升温速度快,污泥中悬浮性挥发固体(VSS)和悬浮固体(SS)溶解,液相COD、TOC、氨氮、TN和TP浓度增大, pH值降低.水解效率受污泥浓度影响显著,浓度13%的污泥VSS和SS溶解率低于7%和9%的污泥.170℃热水解5min,9%污泥的VSS和SS溶解率分别为23%和18%, SCOD浓度为41g/L, TOC和氨氮浓度达到30g/L和1g/L.热水解污泥厌氧消化性能提高,9%污泥的产气量在170℃、5min和10min比未处理污泥增加27%和30.8%.热水解时间对提高消化性能影响不大,热水解由5 min到10min,120℃、150℃和170℃的产气量分别增加4%、3.6%和5.7%.

关 键 词:微波热水解  高固体污泥  厌氧消化
收稿时间:2007/6/14 0:00:00
修稿时间:2007/8/22 0:00:00

Characteristics of High Solid Content Sludge with Microwave Irradiation
QIAO Wei,WANG Wei,XUN Rui,ZHOU Gang,WAN Xiao and XIA Zhou.Characteristics of High Solid Content Sludge with Microwave Irradiation[J].Chinese Journal of Environmental Science,2008,29(6):1611-1615.
Authors:QIAO Wei  WANG Wei  XUN Rui  ZHOU Gang  WAN Xiao and XIA Zhou
Institution:Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. qw04@mails.tsinghua.edu.cn
Abstract:This paper focus on changes of high solid content sludge (7%, 9% and 13%) hydrolysis with microwave irradiation also anaerobic biodegradation of treated sludge was tested by biochemical methane potential (BMP) procedure. Results showed that microwave irradiation provided a rapid temperature increasing. Hydrolysis accelerated the solubilization of volatile suspended solid (VSS) and suspended solid (SS). COD, TOC, NH4+-N, TN, and TP concentration of liquor sludge increased, while pH decreased. Sludge solid content was found to be the most influential parameter. VSS and SS dissolving ratio of sludge with 13% solid content were lower than sludge with 7% and 9% solid content. 23% of VSS and 18% of SS dissolved for 9% sludge at 170 degrees C with 5 min, SCOD of liquor was 41 g/L, and concentration of TOC and NH4+-N were 30 g/L and 1 g/L respectively. Biodegradation of treated sludge improved. Methane production of 9% sludge at 170 degrees C with 5 min and 10 min were 27% and 30.8% higher than that of untreated sludge. Hydrolysis time increasing from 5 min to 10 min brought an improvement of 4%, 3.6% and 5.7% methane production at 120 degrees C, 150 degrees C and 170 degrees C.
Keywords:microwave irradiation  high solid content sludge  anaerobic biodegradability
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