| 硫酸改性粉煤灰做污泥脱水剂研究 |
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| 引用本文： | 郦汇源,王晓,张会来,武倩倩. 硫酸改性粉煤灰做污泥脱水剂研究[J]. 安徽农业科学, 2012, 0(5): 2955-2956,2959 |
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| 作者姓名： | 郦汇源 王晓 张会来 武倩倩 |
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| 作者单位： | 中国矿业大学环境与测绘学院 |
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| 基金项目： | 2009年国家大学生创新性实验计划项目(091029025);中央高校基本科研业务费专项资金(JX111744) |
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| 摘 要： | [目的]降低污泥农用后对土壤和农作物的危害,降低污泥脱水处理成本。[方法]利用聚丙烯酰胺(PAM)作为絮凝剂、经硫酸改性的粉煤灰(MFS)作为助凝剂,分别进行单独投加PAM和联合投加PAM、MFS的污泥脱水试验。[结果]聚丙烯酰胺的投加量从100 ml污泥干重的1%降到0.5%,减少50%,而脱水后泥饼含水率从83.56%(单投PAM1%)降到77.43%,泥饼体积减小约17%。[结论]加入0.1 gMFS做助凝剂后,可明显改善污泥脱水效果。
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| 关 键 词： | 改性粉煤灰 助凝剂 聚丙烯酰胺 污泥脱水 |
Study on the Application of Sulfuric Acid Modified Fly Ash in Sludge Dewatering |
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| Affiliation: | LI Hui-yuan et al(School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou,Jiangsu 221116) |
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| Abstract: | [Objective] The aim was to reduce the damage of sludge farm application on soil and crops,and reduce the cost of sludge dewatering.[Method] With polyacrylamide(PAM) as a flocculant and fly ash modified by sulfuric acid(MFS) as a coagulant,two experiments of sludge dewatering were made by dosing PAM separately and by dosing PAM joined with MFS.[Result] PAM dosage decreased from 1% of the weight of 100 ml sludge dried to 0.5%,by 50% reduced.The moisture content of sludge cake decreased from 83.56%(when 1% PAM dosing separately) to 77.43%.And the volume of sludge cake reduced about 17%.[Conclusion] The test results showed that sludge dewatering effects could be greatly improved after 0.1 g MFS joined as a coagulant. |
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| Keywords: | Modified fly ash Coagulant PAM Sludge dewatering |
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