| pH值对剩余污泥水解酸化溶出物的影响 |
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| 引用本文： | 高永青, 张晶宇, 彭永臻, 王建龙, 巩有奎. pH值对剩余污泥水解酸化溶出物的影响[J]. 北京工业大学学报, 2011, 37(1): 139-145. |
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| 作者姓名： | 高永青 张晶宇 彭永臻 王建龙 巩有奎 |
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| 作者单位： | 1.北京工业大学 北京市水质科学与水环境恢复重点实验室, 北京 100124 |
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| 基金项目： | “十一五”国家科技支撑计划重点项目(2006BAC19B03); 北京市教委科技创新平台项目(PXM2008-014204-050843); 北京高校人才强教计划高层次人才资助项目(PHR20090502) |
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| 摘 要： | 在室温条件下(25℃),采用批量实验,研究了pH值在4.0~12.0变化时污泥水解酸化效率情况以及水解过程中溶出的可溶性有机物(SCOD)、挥发性有机酸(VFAs)和氮、磷的质量浓度变化.实验结果表明,污泥水解酸化效率递减顺序为碱性>酸性>中性.ρSCOD、ρVFAs、ρ(NH4+-N)和ρ(PO43--P)随时间延续而增大,并且都随pH值升高(4.0~11.0)而呈现出先减小后增大的趋势.在pH=11.0时,ρSCOD和ρVFAs值最大,分别为2 599 mg/L和749 mg/L;pH=4.0时,ρ(NH4+-N)和ρ(PO43--P)值最大,分别为208.1 mg/L和193.4 mg/L.通过调整pH值能改变污泥水解酸化效率,并且选择pH值在10.0~11.0时,可以协调水解酸化效率与后续脱氮除磷系统N、P负荷之间的关系,既为脱氮除磷系统提供SCOD和VFAs,又可以实现剩余污泥减量.
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| 关 键 词： | 水解酸化 pH值 可溶性有机物 挥发性有机酸 剩余污泥减量 |
| 收稿时间： | 2009-02-22 |
The Characteristics of Activated Sludge Hydrolysis and Acidification Products at Different pH |
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| GAO Yong-qing, ZHANG Jing-yu, PENG Yong-zhen, WANG Jian-long, GONG You-kui. The Characteristics of Activated Sludge Hydrolysis and Acidification Products at Different pH[J]. Journal of Beijing University of Technology, 2011, 37(1): 139-145. |
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| Authors: | GAO Yong-qing ZHANG Jing-yu PENG Yong-zhen WANG Jian-long GONG You-kui |
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| Affiliation: | 1.Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | The effect of pH value(4.0-12.0) of soluble chemical oxygen demand(SCOD),volatile fatty acid(VFAs),nitrogen and phosphate production in the activated sludge hydrolysis process was investigated at ambient temperature by batch experiments.The experiment results showed that the sequence for hydrolysis-acidification efficiency of activated sludge was: alkaline station,acidic station and neutral station.When the pH value was between 6.0 and 11.0,the efficiency increased with the increasing of pH,but when the pH ... |
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| Keywords: | hydrolysis and acidification pH SCOD VFAs excessive activated sludge reduction |
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