| 改性净水污泥的磷吸附特性研究 |
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| 引用本文： | 朱亚琴,徐乐中,李大鹏.改性净水污泥的磷吸附特性研究[J].水处理技术,2012(6):63-65,74. |
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| 作者姓名： | 朱亚琴 徐乐中 李大鹏 |
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| 作者单位： | 苏州科技学院环境科学与工程学院,江苏苏州,215011 |
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| 摘 要： | 研究了经过浓硫酸改性后的净水厂污泥对磷的吸附特性。结果表明,原泥和改性污泥对磷的吸附都符合Langmuir吸附等温方程。对于高磷含量的溶液来说,污泥干样与浓硫酸的体积比(泥酸体积比)为40:1的改性污泥处理效果为佳,而对于P的质量浓度不大于20 mg/L的溶液来说,泥酸体积比80:1的改性污泥效果为佳。泥酸体积比为40:1改性污泥对磷的吸附量随初始磷含量的增大而增加,随着溶液初始pH的增大逐渐增大,随着投加量的增加而减小。硫酸改性净水污泥是可行的,可以作为污水的磷吸附材料。
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| 关 键 词： | 净水厂污泥 改性 磷 吸附 |
PHOSPHORUS ADSORPTION CHARACTERISTICS OF MODIFIED WATERWORKS SLUDGE |
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| Zhu Yaqin
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Xu Lezhong
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Li Dapeng.PHOSPHORUS ADSORPTION CHARACTERISTICS OF MODIFIED WATERWORKS SLUDGE[J].Technology of Water Treatment,2012(6):63-65,74. |
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| Authors: | Zhu Yaqin Xu Lezhong Li Dapeng |
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| Affiliation: | (School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011,China) |
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| Abstract: | Experiments were done to investigate phosphorus adsorption characteristics of modified waterworks sludge.The results showed that the Langmuir equation could describe phosphorus adsorption of modified waterworks sludge and waterworks sludge.For the high concentration of phosphorus solution,the 40:1(solid-liquid ratio) modified waterworks sludge obtained best adsorption effects.As for the concentration not more than 20 mg/L of phosphorus solution,the 80:1 modified waterworks sludge obtained best adsorption effects.Phosphorus adsorption rate of 40:1 modified waterworks sludge increased by increasing initial phosphorus concentration,initial pH and decreasing sludge dose.Waterworks sludge modified by concentrated sulfuric acid was feasible,which could be used as phosphorus adsorption material for sewage. |
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| Keywords: | waterworks sludge modification phosphorus adsorption |
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