| 污泥性质对微波预处理-厌氧消化的影响及古菌群落结构分析 |
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| 引用本文： | 房平,唐安平,付兴民,李伟,文洋,佟娟,魏源送.污泥性质对微波预处理-厌氧消化的影响及古菌群落结构分析[J].环境科学,2018,39(11):5108-5115. |
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| 作者姓名： | 房平 唐安平 付兴民 李伟 文洋 佟娟 魏源送 |
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| 作者单位： | 西安工程大学化学与环境工程学院;中国科学院生态环境研究中心;北京城市排水集团有限责任公司;北京科技大学能源与环境工...;华北水利水电大学环境与市...;北京建筑大学环境与能源工...;吉林建筑大学市政与环境工...;佛山市新之源污水处理有限...;北京建筑大学城市雨水系统...;天津城建大学环境与市政工...;中国科学院生态环境研究中...;苏州科技大学环境科学与工...;北京市自来水集团檀州污水... |
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| 基金项目： | 国家自然科学基金项目（51578535） |
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| 摘 要： | 污泥性质对预处理强化厌氧消化工艺的效果有较大影响.本研究对比了某实际污水厂A~2O工艺和A~2O-MBR工艺产生的剩余污泥在微波预处理-厌氧消化过程中污泥性质的变化与产气效果,并考察了在预处理和厌氧消化过程中污泥的古菌群落结构变化.结果表明,A~2O工艺剩余污泥有机质含量比A~2O-MBR污泥高出16. 4%(分别为66. 4%和50. 0%),SCOD、溶解性蛋白质和多糖分别为后者1. 24、2. 02和4. 84倍,具有更好的可生物降解性.虽然预处理对生物降解性差的A~2O-MBR污泥有机物释放效果更好,但A~2O污泥在微波预处理-厌氧消化后产甲烷量比相应处理后的A~2O-MBR污泥多26. 1%.两种剩余污泥的古菌群落结构差异较大,A~2O-MBR污泥中甲烷丝菌属和甲烷八叠球菌属丰度分别比A~2O污泥多3. 68%和19. 73%.预处理对古菌群落的丰富度和均匀度影响相对较小,但厌氧消化后波动较大.污泥中有机组分不同是引起古菌群落结构变化的重要影响因素.
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| 关 键 词： | 剩余污泥 污泥性质 微波预处理 厌氧消化 古菌群落结构 |
| 收稿时间： | 2018/3/21 0:00:00 |
| 修稿时间： | 2018/5/2 0:00:00 |
Impacts of Sludge Characteristics on Anaerobic Digestion with Microwave Pretreatment and Archaeal Community Structure Analysis |
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| FANG Ping,TANG An-ping,FU Xing-min,LI Wei,WEN Yang,TONG Juan and WEI Yuan-song.Impacts of Sludge Characteristics on Anaerobic Digestion with Microwave Pretreatment and Archaeal Community Structure Analysis[J].Chinese Journal of Environmental Science,2018,39(11):5108-5115. |
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| Authors: | FANG Ping TANG An-ping FU Xing-min LI Wei WEN Yang TONG Juan and WEI Yuan-song |
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| Institution: | School of Environmental and Chemical Engineering, Xi''an Polytechnic University, Xi''an 710048, China,School of Environmental and Chemical Engineering, Xi''an Polytechnic University, Xi''an 710048, China;Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,Beijing Drainage Group Co. Ltd., Beijing 100044, China,Beijing Drainage Group Co. Ltd., Beijing 100044, China,Beijing Drainage Group Co. Ltd., Beijing 100044, China,Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China and Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | Sludge characteristics is an important factor in sludge pretreatment and anaerobic digestion (AD) efficiency. Therefore, waste sludge of anaerobic-anoxic-aerobic (A2O) and A2O-membrane bioreactor (MBR) wastewater treatment processes from a full-scale wastewater treatment plant were taken, and the variations of sludge characteristics and performance during microwave pretreatment and AD were compared. The succession of archaeal community structure during the sludge treatment was also investigated. A2O waste sludge showed better biodegradability than A2O-MBR waste sludge did, with 16.4% higher organic matter content (66.4% vs. 50.0%), soluble chemical oxygen demand (COD) (1.24 fold), soluble protein (2.02 fold), and polysaccharides (4.84 fold). Although the efficiency of microwave pretreatment for A2O-MBR waste sludge was better than that for A2O waste sludge, the latter sludge produced 26.1% more methane than the former did. The two types of waste sludge showed different archaeal community structures. The abundances of Methanothrix and Methanosarcina in A2O-MBR waste sludge were 3.68% and 19.73% higher than that in A2O waste sludge. The richness and evenness of archaeal communities slightly changed after pretreatment, but significantly changed after AD. The Chao1 index increased by 54.0%-68.8% after AD, whereas the Pielou index decreased by 16.2%-34.6%. Redundancy analysis showed that the organic components of waste sludge contributed to the succession of archaeal community structure. |
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| Keywords: | waste sludge sludge characteristics microwave pretreatment anaerobic digestion archaeal community structure |
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