Distribution and risk assessment of heavy metals in sewage sludge after ozonation

被引：38

作者：

Zhang, Jian ^{[1
]}

Tian, Yu ^{[1
,2
]}

Zhang, Jun ^{[1
,2
]}

Li, Ning ^{[1
]}

Kong, Lingchao ^{[1
]}

Yu, Ming ^{[1
]}

Zuo, Wei ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

[2] HIT, SKLUWRE, Harbin 150090, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 06期

关键词：

Heavy metals; Ozonation; Sewage sludge; Chemical speciation; Risk assessment; CHEMICAL SPECIATION; ACTIVATED-SLUDGE; FLY-ASH; SEDIMENTS; CU; DISINTEGRATION; RESIDUES; PATTERNS; SOILS; LEAD;

D O I：

10.1007/s11356-016-6313-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper, transformation of chemical forms of heavy metals (Cu, Zn, Ni, Pb, Cr, Cd, Mn, and Mg) in sewage sludge (SS) during ozonation was investigated. Meanwhile, the risk of heavy metals to environment in ozonated sludge (OS) and SS was estimated according to risk assessment code (RAC). The residual rates of heavy metals were over 72.8 %, which demonstrated that the heavy metals in SS were mainly existed in the OS after ozonation. The results indicated that the ozonation had an effect on the redistribution of heavy metals. The comparisons of the RAC between OS and SS indicated that the environmental risk of heavy metals in OS was aggravated compared to SS, except for Mg. Consequently, it was suggested that the OS should be pretreated before application.

引用

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页码：5118 / 5125

页数：8

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