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应用生态学报 ›› 2002, Vol. ›› Issue (2): 167-170.

• 研究论文 • 上一篇    下一篇

城市垃圾堆肥对Cr污染土壤的修复效应

黄启飞1, 高定1, 丁德蓉2, 陈同斌1   

  1. 1. 中国科学院地理科学与资源研究所农业生态与环境技术试验站, 北京 100101;
    2. 西南农业大学资源环境学院, 重庆 400716
  • 收稿日期:2001-08-21 修回日期:2001-10-10 出版日期:2002-02-15
  • 通讯作者: 陈同斌
  • 基金资助:
    国家“九五”科技攻关项目(969090105);北京市自然科学基金重大资助项目(6990002)

Remediation of chromium-polluted soil using municipal solid waste compost

HUANG Qifei1, GAO Ding1, DING Derong2, CHEN Tongbin1   

  1. 1. Station for Agroecology and Environmental Technology, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101;
    2. Southwest Agricultural University, Chongqing 400716
  • Received:2001-08-21 Revised:2001-10-10 Online:2002-02-15

摘要: 通过模拟土培试验和盆栽试验,研究垃圾堆肥对Cr污染土壤的修复效应.结果表明,垃圾堆肥对于土壤中有效Cr含量的影响是通过有机质含量、Eh、pH、<0.01mm粘粒含量等理化因子的变化来实现的;有机质含量变化和Eh变化分别是旱地土壤和淹水土壤中的主要影响因素,对有效Cr的效应分别占贡献的73.4%、55.5%;垃圾堆肥施入土壤后,土壤渗透性得到改善,土壤中的Cr因被还原、吸附而固定,迁移量减少;垃圾堆肥施入可以减少植株对Cr的吸收,旱地土壤中,施加垃圾肥可使生物产量增加35.9%,植株体内Cr含量下降48.9%,在淹水土壤中,这种效应更加显著,生物产量比旱地土壤高86.3%,Cr含量低23.8%;垃圾堆肥施入后,植株体内的其他重金属含量未超标,垃圾肥可以安全用于Cr污染土壤的修复.

关键词: 垃圾, 堆肥, Cr污染, 土壤修复

Abstract: Astudy on the feasibiltiy of remediation of Cr-polluted soil using municipal solid waste(MSW)compost was carried out.The result showed that organic matter(O.M.),Eh,pHand <0.01mm of clay would influence the bioavailability of chromium in the soil,and O.M.and Eh were the principal influencing factors in the dryfield and inundating soil,up to 73.40% and 55.5% of the contribution rate affecting the bioavailability of chromium,respectively.The osmosis of the soil was improved when compost was applied,but the quantity of movable chromium was reduced becasue chromium in soil was deoxidized and adsorbed.MSWcompost could reduce the absorption of chromium by the tested plant.The yield of the plant grown in the dry soil was increased by 35.9% and the content of Cr in the plant was decreased by 48.9%.The effect was more notable in the inundating soil:86.3% of the yield increased and 23.8% of the Cr content decreased.However,MSWcompost could not increase the risk of other heavy metal pollution.

Key words: Municipal soild waste, Compost, Chromium pollution, Soil remediation

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