生态与农村环境学报 ›› 2014, Vol. 30 ›› Issue (3): 369-373.doi:

• 污染控制与修复 • 上一篇    下一篇

堆肥过程中腐殖质含量变化及其对重金属分配的影响

葛骁,魏思雨,郭海宁,褚艳春,丁敬,王小治,封克   

  1. 扬州大学环境科学与工程学院
  • 收稿日期:2013-08-27 修回日期:2014-05-29 出版日期:2014-05-25 发布日期:2014-08-08
  • 通讯作者: 王小治 扬州大学环境科学与工程学院 E-mail:xzwang@yzu.edu.cn
  • 作者简介:葛骁(1987-),男,江苏新沂人,硕士生,主要研究方向为固体废弃物处理处置及资源化利用。E-mail:gexiao20072008@163.com
  • 基金资助:

    江苏省普通高校研究生科研创新计划(CXLX13-910);江苏省高等学校大学生创新创业训练计划(201311117025Z);扬州市-校合作项目(YZ2011146)

Variation of Humus in Content of During Composting and Its Influence on Heavy Metals in Distribution

GE  Xiao, WEI  Si-Yu, GUO  Hai-Ning, CHU  Yan-Chun, DING  Jing, WANG  Xiao-Zhi, FENG  Ke   

  1. College of Environmental Science and Engineering,Yangzhou University
  • Received:2013-08-27 Revised:2014-05-29 Online:2014-05-25 Published:2014-08-08
  • Contact: WANG Xiao-Zhi College of Environmental Science and Engineering,Yangzhou University E-mail:xzwang@yzu.edu.cn

摘要: 以H2O、Na4P2O7+NaOH连续浸提污泥堆肥过程中堆体的腐殖酸以及与其结合的重金属,分析腐殖酸及其结合的重金属随时间的变化规律。结果表明,堆肥过程中重金属主要以胡敏酸(HA)结合态为主,水溶态重金属含量较少,且重金属有效性与迁移性较低;堆肥结束时各水溶态重金属含量减少,HA-Pb、HA-Ni和HA-Cu含量占重金属总量的比例明显升高,与堆肥初始相比分别增加28.00、17.34和1.40百分点,堆肥促进了水溶态重金属向HA结合态转变;HA对几种重金属的固定能力由大到小依次为Cu、Pb、Ni和Zn。

关键词: 污泥堆肥, 腐殖酸, 重金属, 有效性

Abstract: Heavy acid(HA) and HA-bound heavy in the sludge under composting were extracted using a sequential extraction method with H2O and Na4P2O7+NaOH, separately,for temporal variation of HA and HA-bound heavy metals. Results show that heavy metals in the sludge under composting were mainly in HA-bound form and a little in water soluble form. Besides, they were quite low in availability and mobility. At the end of composting, water-soluble (FA-bound) forms of heavy metals were low in content, while HA-Pb, HA-Ni and HA-Cu was apparently quite high in proportion to the total heavy metals and increased by 28.00%, 17.34%, and 1.40 percentage points, respectively, over that at the beginning of composting. Obviously, composting promotes transformation of water soluble form into HA-bound form of heavy metals, and HA capacity of binding heavy metals varies, displaying an order of Cu > Pb > Ni > Zn.

Key words: sludge compost, humic acid, heavy metal, effectiveness

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