中国农业气象 ›› 2014, Vol. 35 ›› Issue (02): 149-155.doi: 10.3969/j.issn.1000-6362.2014.02.005

• 论文 • 上一篇    下一篇

固体浓度对猪粪厌氧消化甲烷产出特性的影响

陈欣,涂德浴,隋倩雯,刘翀,董红敏   

  1. 1安徽工业大学机械工程学院,马鞍山243032;2中国农业科学院农业环境与可持续发展研究所,北京100081
  • 收稿日期:2013-12-23 出版日期:2014-04-20 发布日期:2015-02-11
  • 作者简介:陈欣(1988-),女,山东潍坊人,硕士生,研究方向为农业废弃物处理及资源化利用。Email:magical_piggy@yeah.net
  • 基金资助:

    国家973计划资助项目(2012CB417100)

Influence of Solid Concentration on Methane Output of Anaerobic Digestion ofSwine Manure

CHEN Xin,TU Deyu,SUI Qianwen,LIU Chong,DONG Hongmin   

  1. 1Shool of Mechanical Engineering,Anhui University of Technology,Maanshan243032,China;2Institute of Environment and SustainableDevelopment in Agriculture,Chinese Academy of Agriculture Sciences,Beijing100081
  • Received:2013-12-23 Online:2014-04-20 Published:2015-02-11

摘要: 利用自动甲烷潜力检测仪(AMPTS),在35℃条件下,设置TS2%、TS6%、TS10%和TS14%共4个总固体浓度的猪粪水进行厌氧消化试验,观测其日产气量及其甲烷浓度的变化过程。结果表明:各处理的日产气量均在第一天达到最高值,并随着消化天数的增加逐渐下降,固体浓度越高产气结束越晚。固体浓度越高初期产生的甲烷浓度越低,但随发酵时间延长高浓度处理的甲烷浓度逐渐提高,TS6%处理后期产甲烷浓度最高可达761%。在TS2%~10%时随固体浓度升高甲烷的总产量逐渐提高,而TS14%处理与TS10%处理的甲烷总产量无显著差异。计算表明,TS2%、TS6%、TS10%和TS14%处理的单位化学需氧量(CODcr)产甲烷率分别为311.5、409.7、488.8和357.4mL/g,单位挥发性总固体量(VS)产甲烷率分别为330.1、491.3、473.1和333.4mL/g,其中TS6%和TS10%处理的单位甲烷产率较高。说明固体浓度对猪粪厌氧消化过程及甲烷产率有较大影响,选择适宜的固体浓度有利于提高厌氧消化的甲烷产率。研究结果可为猪场沼气工程控制参数选择和粪便管理温室气体清单编制提供数据参考。

关键词: 猪粪, 厌氧消化, 沼气, 甲烷产率

Abstract: Lab-scale experiments were conducted using the Automatic Methane Potential Test System (AMPTS) under the condition of 35℃ to investigate the influence of swine manure total solid (TS) concentrations of 2%,6%,10% and 14% on the anaerobic digestion and methane production The results showed that biogas output from all treatments were maximum in the first day,and gradually declined with the digestion days The higher solid concentration required longer digestion time The larger methane concentration of biogas was obtained from low TS treatment in the beginning period However,methane concentration from high TS treatment gradually increased as the extension of digestion time Methane concentrations of biogas from TS of 6% treatment were highest in the later periods of experiment,and could reach 76.1% In the range of TS of 2%-10%,the larger cumulative methane production was obtained from the higher concentration,other than the cumulative methane production from TS of 14% which was no significant differences compared with that from TS of 10%To calculate the methane yield per CODcr from different treatments of TS of 2%,6%,10%,and 14%,was 311.5 409.7,488.8,and 357.4mL/g,respectively,and the methane yield per VS from different treatments of TS of 2%,6%,10%,and 14%,was 330.1 ,491.3,473.1,and 491.3mL/g,respectively The larger methane yield was obtained from TS of 6% and 10%Research results showed that solid concentration of swine manure had a great influence on anaerobic digestion process and the methane yield Selecting suitable solid concentration was beneficial to improve the methane production of anaerobic digestion The experiment results provide useful reference data for the selection of biogas digesters design parameters and support the compilation of GHG inventory from manure management

Key words: Swine manure, Anaerobic digestion, Biogas, Methane yield