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[1]刘丽娟 冷平生** 胡增辉** 张成梁 杨杨.城市污泥和建筑垃圾混合基质对臭椿生长及重金属转移的影响*[J].应用与环境生物学报,2018,24(06):1-13.[doi:10.19675/j.cnki.1006-687x.2018.02031]
 Liu Li-juan,Leng Ping-sheng **,Hu Zeng-hui**,et al.Influences of the growth media mixed by municipal raw sludge and construction waste on growth and heavy metal transferring of Ailanthus altissima*[J].Chinese Journal of Applied & Environmental Biology,2018,24(06):1-13.[doi:10.19675/j.cnki.1006-687x.2018.02031]
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城市污泥和建筑垃圾混合基质对臭椿生长及重金属转移的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年06期
页码:
1-13
栏目:
研究论文
出版日期:
2018-12-25

文章信息/Info

Title:
Influences of the growth media mixed by municipal raw sludge and construction waste on growth and heavy metal transferring of Ailanthus altissima*
文章编号:
201802031
作者:
刘丽娟1 冷平生1** 胡增辉1** 张成梁2 杨杨1
1北京农学院园林学院 北京林果业生态环境功能提升协同创新中心 北京 102206?
2北京市科学技术研究院轻工业环境保护研究所 北京 100095
Author(s):
Liu Li-juan1Leng Ping-sheng 1** Hu Zeng-hui1**zhang Chenliang 2 Yang Yang 1
1College of Landscape Architecture,Beijing University of Agriculture,Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing,102206,China.?
?2The Environmental Protection Research Institute of Light IndustryBeijing Academy of Science and TechnologyBeijing 100095China
关键词:
城市污泥生长基质理化性状重金属富集作用臭椿
Keywords:
raw sewage sludge growth media physicochemical properties heavy metal enrichment Ailanthus altissima
DOI:
10.19675/j.cnki.1006-687x.2018.02031
摘要:
城市污泥与建筑垃圾是城镇主要固体废弃物,如何实现其安全低成本的土地利用是一个重要的课题。本试验采用盆栽方式,配置城市生污泥体积占比为0%、20%、40%、60%、80%和100%等六种生污泥与建筑垃圾混合基质,播种臭椿种子,对混合基质的理化性状与植物当年生长量的变化进行分析。结果显示:随着污泥含量增加,基质中黏粒含量、电导率、有机质、养分和重金属As、Cd、Co、Cu、Ni、Zn含量显著增加,而Cr、Pb变化不大。污泥含量40%及以下的基质中各重金属含量均达到国家《土壤环境质量标准》旱地Ⅰ-Ⅱ级标准,污泥占比60%和80%基质中各重金属含量均达到III级标准。污泥含量为20%和40%的基质最适宜臭椿生长,植株干重比对照提高54.57%以上,高于40%则抑制臭椿生长,高比例污泥基质中臭椿萌发与生长差,基质黏粒含量高、透气透水性差是主要原因。臭椿根茎叶重金属含量及富集系数与基质中重金属的含量变化一致,臭椿对Cd的富集系数最大,在0.1-0.5之间,对Zn、Ni的富集系数次之,叶片对重金属的富集系数大多高于根茎。综合考虑植株生物量、重金属污染,未经前处理的生污泥与建筑垃圾直接混合成植物生长基质是完全可行的,生污泥占比为40%的混合基质适宜种植臭椿,臭椿对基质中的重金属具有较强的富集能力。
Abstract:
Objectives: Sewage sludge and construction waste are major urban solid waste, how to realize their safe land use with lower cost is an important issue,therefore,an experiment was condacted to study the effect of growth media mixed by raw sewage sludge and construction waste on the growth and transferring of heavy metals of Ailanthus altissima.Methods: In a pot experiment, 0%, 20%, 40%, 60%, 80% and 100% (volume ratio)raw sewage sludge were mixed with construction waste as growth media , and Ailanthus altissima seeds were bowed , the physical and chemical properties of these substrate as well as plant biomass in growth season were analyzed.Results:With the increase of the sludge content in growth media, the conductivity, clay, organic matter, nutrient, as well as As, Cd, Co, Cu, Ni, Zn content of media increased significantly, while Cr and Pb content had little change. The heavy metal content of the media with≤40% sludge all reached the Environmental Quality Standard for Soils(GB15618-1995)I-II level, that in the media with 60% and 80% sludge reached III level. The media with 20% and 40% sludge were the best to the growth of A.altissima, t he plant dry weight increased by more than 54.57% compared with that of control, and the sludge content by more than 40% inhibited the plant growth, a few seeds germinated and grow slow in the media with high ratio sludge , which is mainly because of high clay content of the media producing very poor air\water permeability. The heavy metal contents in leaves, stem, root of A.altissima as well as their enrichment coefficients changed as the same as ones in mixed media, the enrichment coefficient of Cd by A.altissima was the biggest with 0.1-0.5, Zn and Ni enrichment coefficient were next, the enrichment effect of leaves were greater than that of the root and stem. Conclusions: Raw sewage sludge without the pretreatment mixed with construction waste directly into the plant growth substrate is completely feasible, the growth media mixed by 40% sludge was suggested for planting of A.altissima, and the plant species has a strong ability to transfer heavy metals from growth media.

备注/Memo

备注/Memo:
收稿日期: 2018-02-25 接受日期: 2015-04-09
*北京市自然科学基金和北京市属高等学校创新团队建设与教师职业发展计划项目资助
**通讯作者(E-mail:lengpsh@tom.com; huzenghui@bua.edu.cn)
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更新日期/Last Update: 2018-06-05