| 利用气相色谱法测定剩余污泥厌氧消化产生的混合VFA |
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| 引用本文： | 杨奕,周理君.利用气相色谱法测定剩余污泥厌氧消化产生的混合VFA[J].污染防治技术,2011(5). |
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| 作者姓名： | 杨奕 周理君 |
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| 作者单位： | 太仓市环境监测站;南京广淼环境工程有限公司; |
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| 摘 要： | 厌氧消化是剩余污泥处理的重要方法,消化过程中会产生大量的挥发性脂肪酸(VFA)。讨论了气相色谱在恒温条件下对剩余污泥厌氧消化过程中产生乙酸、丙酸、异丁酸、正丁酸、异戊酸、正戊酸测定的可行性。结果表明:各种酸出峰时间间隔清晰,易于识别;从数据平行测试的变异系数看,异戊酸的变异系数最大,也仅为3.23%,表明测试方法具有良好的可重复性;回收率实验表明,剩余污泥消化液中各种VFA组分的回收率在96%～105%之间,符合文献规定的测试要求。
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| 关 键 词： | 气相色谱法 挥发性脂肪酸 剩余污泥厌氧消化 |
The Determination of VFAs in Digestive Juice of Excess Active Sludge with Gas Chromatography |
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| YANG Yi,ZHOU Li-jun.The Determination of VFAs in Digestive Juice of Excess Active Sludge with Gas Chromatography[J].Pollution Control Technology,2011(5). |
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| Authors: | YANG Yi ZHOU Li-jun |
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| Institution: | YANG Yi1,ZHOU Li-jun2(1.Taicang Environmental Monitoring Station,Taicang,Jiangsu 215400,China,2.Nanjing Guangmiao Environmental Engineering Co.,Ltd.Nanjing,Jiangsu 210028,China) |
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| Abstract: | Anaerobic disgestion is a main treatment process of excess active sludge,which has been used widely.Lot's volatile fatty acids(VFAs) were produced during the course of digestion.The gas chromatography was used to determining some VFAs,which are acetic acid;propionic acid,i-butyric,butyric acid,i-valeric,valeric acid in digestive juice of excess actived sludge.The results showed that the time intervals of all kinds of VFAs were clear and sharply.Among the coefficients of variation of all VFAs in the repeated... |
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| Keywords: | gas chromatography VFA excess active sludge anaerobic digestion |
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