An Experimental Study of Nansha Zinc Contaminated Sludge Solidification with Cement and Lime

Liang Shi-hua; Luo Qi; Wang Meng; Liu Yong-jian; Yin Ying-mei; Jiang Zhi-yuan

doi:10.12052/gdutxb.160107

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An Experimental Study of Nansha Zinc Contaminated Sludge Solidification with Cement and Lime

更新时间：2026-05-27

- An Experimental Study of Nansha Zinc Contaminated Sludge Solidification with Cement and Lime
- Vol. 34, Issue 5, Pages: 80-85(2017)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.160107
  CLC： X53
- Online First：09 September 2017，
  
  Published：2017
- 稿件说明：
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梁仕华, 罗祺, 王蒙, 刘勇健, 尹应梅, 江志源. 石灰与水泥固化南沙锌污染软土试验研究[J]. 广东工业大学学报, 2017, 34(5): 80-85.

Liang Shi-hua, Luo Qi, Wang Meng, et al. An Experimental Study of Nansha Zinc Contaminated Sludge Solidification with Cement and Lime[J]. 2017, 34(5): 80-85.
梁仕华, 罗祺, 王蒙, 刘勇健, 尹应梅, 江志源. 石灰与水泥固化南沙锌污染软土试验研究[J]. 广东工业大学学报, 2017, 34(5): 80-85. DOI： 10.12052/gdutxb.160107.

Liang Shi-hua, Luo Qi, Wang Meng, et al. An Experimental Study of Nansha Zinc Contaminated Sludge Solidification with Cement and Lime[J]. 2017, 34(5): 80-85. DOI： 10.12052/gdutxb.160107.

摘要

利用石灰与水泥混合固化剂对广州南沙锌污染淤泥进行固化/稳定处理.通过无侧限抗压强度试验和淋滤试验分别对固化土体的力学性能和锌离子浸出率进行研究，得出无侧限抗压强度随固化剂中石灰掺量和龄期的变化关系及石灰掺量与锌离子浸出量之间的变化关系；通过扫描电镜研究了不同配比下固化土样微观结构特征.研究表明：随着石灰掺量的增加，固化土体强度随龄期和石灰掺量均有较大提高，同时锌离子浸出质量浓度有大幅度降低；其中15%水泥+10%石灰修复3 000 mg/kg以下锌污染土锌离子浸出率为零.综合来说，H2（15%水泥+10%石灰）固化修复效果较好，这与固化土体的微观结构中的水化产物有关.

Abstract

Zinc pollution sludge in Nansha (Guangzhou) was solidified and stabilized by the lime and cement. The mechanical property of solidified soil and zinc ions leaching rate were studied respectively through the unconfined compressive strength test and leaching test. The relationship of the unconfined compressive strength with the changes of lime dosage and the age has been obtained

meanwhile the relationship of the lime dosage and zinc ions leaching quantity also derived. The solidified soil samples with different ratio of composition are observed that they have different microstructure characteristics by the electronic microscope. Research shows that the strength of solidified soil has significant increase with the increasing of age and the amount of lime

and the zinc ions leaching concentration has greatly reduced. What's more

zinc ions leaching rate in the zinc pollution soil was to zero with the 15% cement+10% lime repair below 3 000 mg/kg. In conclusion

H2 (15% cement+10% lime) has better effect in curing and repairing

which is associated with the microstructure of hydration products of solidified soil.

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references

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