Effect of co-combusted sludge in waste incinerator on heavy metals chemical speciation and environmental risk of horizontal flue ash

被引：49

作者：

Chen, Limei ^{[1
]}

Liao, Yanfen ^{[1
]}

Ma, Xiaoqian ^{[1
]}

Niu, Yadong ^{[2
]}

机构：

[1] South China Univ Technol, Sch Elect Power, Guangzhou 510640, Peoples R China

[2] Everbright Environm Energy Boluo Co Ltd, Huizhou 516139, Peoples R China

来源：

WASTE MANAGEMENT | 2020年 / 102卷

关键词：

Sludge; Municipal solid waste incinerator; Boiler ashes; Heat recovery ashes; Heavy metals; Environmental risk; FLY-ASH; BOTTOM ASH; POLLUTION; CORROSION;

D O I：

10.1016/j.wasman.2019.11.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Incineration of sludge in waste incinerators is a trend of sludge disposal, and the problem of heavy metal in horizontal flue ash is a concern. Horizontal flue ash in waste incinerator was collected before and after the sludge was co-combusted. XRF, SEM-DES, and ICP were used to characterize the effect of sludge on the distribution of heavy metals on different heated surfaces. Potential ecological risk index of all horizontal flue ash was higher than 600, indicating the high ecological risk. After adding sludge for co-combustion, heavy metals content in all ash sample increased. As for chemical speciation of heavy metals, the addition of sludge increased the content of mild acid-soluble fraction, reducible fraction and oxidizable fraction of heavy metals, while decreased that of the residual fraction. Environmental pollution and potential ecological risks of heavy metals were increased when sludge was co-combusted. The fitting relation between the heavy metals content of each speciation and the gas temperature and the sludge mixing amount was given, which could be used to predict the heavy metal content in horizontal flue ash. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：645 / 654

页数：10

共 29 条

[1] Reduction of superheater corrosion by co-firing risky biomass with sewage sludge [J].

Aho, M. ;

Yrjas, P. ;

Taipale, R. ;

Hupa, M. ;

Silvennoinen, J. .

FUEL, 2010, 89 (09) :2376-2386

[2] Assessment of Extractability of Cu, Cr, Ni, Pb and Zn in some Chilean Biosolid-Amended Soils by using BCR Sequential Extraction Procedure [J].

Ahumada, Ines ;

Marican, Adolfo ;

Retamal, Mauricio ;

Pedraza, Cristina ;

Ascar, Loreto ;

Carrasco, Adriana ;

Richter, Pablo .

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2010, 21 (04) :721-730

[3]

AMAND LE, 2006, FUEL, V85, P1313, DOI DOI 10.1016/J.FUEL.2006.01.001

[4] Heavy metals volatilization characteristics and risk evaluation of co-combusted municipal solid wastes and sewage sludge without and with calcium-based sorbents [J].

Chen, Limei ;

Liao, Yanfen ;

Ma, Xiaoqian .

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2019, 182

[5] Characterization of the bottom ash in municipal solid waste incinerator [J].

Chimenos, JM ;

Segarra, M ;

Fernández, M ;

Espiell, F .

JOURNAL OF HAZARDOUS MATERIALS, 1999, 64 (03) :211-222

[6] Ultrafine particulate matter formation in the early stage of pulverized coal combustion of high-sodium lignite [J].

Gao, Qi ;

Li, Shuiqing ;

Yuan, Ye ;

Zhang, Yiyang ;

Yao, Qiang .

FUEL, 2015, 158 :224-231

[7]

HAKANSON L, 1980, WATER RES, V14, P975, DOI 10.1016/0043-1354(80)90143-8

[8] The migration and transformation behaviors of heavy metals during the hydrothermal treatment of sewage sludge [J].

Huang, Hua-jun ;

Yuan, Xing-zhong .

BIORESOURCE TECHNOLOGY, 2016, 200 :991-998

[9] Quantitative evaluation of heavy metals' pollution hazards in liquefaction residues of sewage sludge [J].

Huang, Huajun ;

Yuan, Xingzhong ;

Zeng, Guangming ;

Zhu, Huina ;

Li, Hui ;

Liu, Zhifeng ;

Jiang, Hongwei ;

Leng, Lijian ;

Bi, Wenkai .

BIORESOURCE TECHNOLOGY, 2011, 102 (22) :10346-10351

[10] Operating optimization for the heavy metal removal from the municipal solid waste incineration fly ashes in the three-dimensional Chock tar electrokinetics [J].

Huang, Tao ;

Liu, Longfei ;

Zhou, Lulu ;

Yang, Ke .

CHEMOSPHERE, 2018, 204 :294-302

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