| 直链烷基苯磺酸盐促进剩余污泥产生短链脂肪酸的研究 |
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| 引用本文： | 姜苏,陈银广,周琪. 直链烷基苯磺酸盐促进剩余污泥产生短链脂肪酸的研究[J]. 环境科学学报, 2007, 27(8): 1300-1304 |
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| 作者姓名： | 姜苏 陈银广 周琪 |
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| 作者单位： | 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092;同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092;同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金 , 霍英东教育基金 , 教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 采用批试试验的方法研究了十二烷基苯磺酸钠(C12-LAS)对剩余污泥在厌氧发酵过程中产生的短链脂肪酸(SCFAs)的影响.结果表明,C12-LAS的投加极大地提高了剩余污泥厌氧发酵过程中的SCFAs产量.当C12-LAS加入量低于0.1g·g-1时,SCFAs产量随着C12-LAS加入量的增加而增加,然而,当C12-LAS加入量高于0.1g·g-1时,SCFAs产量反而有所降低.从污泥产酸量以及经济成本考虑,C12-LAS的最佳投加量为0.02g·g-1,此时剩余污泥的SCFAs最大产量出现在第6天.进一步的研究表明,C12-LAS不仅促使大量的碳水化合物和蛋白质脱离污泥颗粒并溶解到液相中,而且抑制了产甲烷菌的活性.尽管剩余污泥经历着酸化过程,但由于其释放出大量的NH4 -N,污泥在整个厌氧发酵过程中的pH值逐渐升高.
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| 关 键 词： | 剩余污泥 短链脂肪酸(SCFAs) 十二烷基苯磺酸钠(C12-LAS) 厌氧 甲烷(CH4) |
| 文章编号： | 0253-2468（2007）08-1300-05 |
| 收稿时间： | 2006-08-16 |
| 修稿时间： | 2006-08-162007-04-12 |
Improved short-chain fatty acids (SCFAs) production from waste activated sludge by linear alkylbenzene sulfonates (LAS) |
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| JIANG Su,CHEN Yinguang and ZHOU Qi. Improved short-chain fatty acids (SCFAs) production from waste activated sludge by linear alkylbenzene sulfonates (LAS)[J]. Acta Scientiae Circumstantiae, 2007, 27(8): 1300-1304 |
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| Authors: | JIANG Su CHEN Yinguang ZHOU Qi |
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| Affiliation: | State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092 |
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| Abstract: | The effect of sodium dodecylbenzene sulfonate (C12-LAS) on anaerobic short-chain fatty acids (SCFAs) production from waste activated sludge (WAS) was investigated in batch tests. Results showed that SCFAs production was greatly improved by C12-LAS. The maximum SCFAs were produced at a C12-LAS dosage below 0.1 g·g-1. Increasing the C12-LASdosage to 0.2 g·g-1 did not increase the SCFAs concentration. The optimum C12-LASdosage for SCFAs production was 0.02 g·g-1 with the maximum SCFAs produced on the 6th day of fermentation. Further studies indicated that C12-LAS promoted the solubilization of sludge protein and carbohydrate, and inhibited methanogen activity. Due to the large amount of NH4+-Nreleased, the pHcontinued to increase throughout the entire fermentation whether C12-LASwas used or not. |
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| Keywords: | waste activated sludge (WAS) short-chain fatty acids (SCFAs) sodium dodecylbenzene sulfonate (C12-LAS) anaerobic methane (CH4) |
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