危险废物焚烧灰-渣共热处理对Cr和Pb的原位固定  

In-situ immobilization of Cr and Pb by co-thermal treatment of hazardous waste incineration ash-slag

作　　者：龙於洋[1] 邱钧健 宋禹翮 沈东升[1] 耿海榕 阮金木 曾小平 吕赛君 古佛全 LONG Yuyang;QIU Junjian;SONG Yuhe;SHEN Dongsheng;GENG Hairong;RUAN Jinmu;ZENG Xiaoping;LÜSaijun;GU Foquan(School of Environmental Science and Engineering,Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling,Zhejiang Engineering Research Center of Non-ferrous Metal Waste Recycling,Instrumental Analysis Center of Zhejiang Gongshang University,Zhejiang Gongshang University,Hangzhou 310012;Zhejiang Huiheyuan Environmental Technology Co.,Ltd.,Jiaxing 314200;Shaoxing Shangyu Zhonglian Environmental Protection Co.,Ltd.,Shaoxing 312300)

机构地区：[1]浙江工商大学环境科学与工程学院,浙江省固体废物处理与资源化重点实验室,有色金属废弃物资源化浙江省工程研究中心,浙江工商大学分析测试中心,杭州310012 [2]浙江惠禾源环境科技有限公司,嘉兴314200 [3]绍兴市上虞众联环保有限公司,绍兴312300

出　　处：《环境科学学报》2023年第6期390-397,共8页Acta Scientiae Circumstantiae

基　　金：浙江省重点研发计划项目(No.2020C03086);浙江省科技计划项目领雁计划(No.2022C03059)。

摘　　要：危险废物焚烧飞灰中重金属含量高,对环境的潜在风险备受关注.本文研究了600~1300℃热处理过程中,危险废物焚烧炉渣的配入对灰-渣体系中Cr和Pb浸出行为的影响.结果表明,灰-渣共热处理可促使体系中的CrO_(2)向稳定性好的Ca_(2)Mg(Si_(0.99)Cr_(0.01))_(2)O_(7)和FeCr_(2)O_(4)相转变,同时Pb主要以残渣态形式存在,从而显著抑制了飞灰热处理产物中Cr和Pb的静态和动态浸出行为.本研究对于飞灰中重金属污染控制及危废协同处置均具有重要参考价值.Due to the high heavy metal content in hazardous waste incineration fly ash,its potential environmental risk is gained increasing attention.In this research,the hazardous waste incineration fly ash and slag were co-thermal treated,and the corresponding leaching behavior of Cr and Pb was investigated.The results revealed that the CrO_(2)phase in the fly ash-slag system can be transformed to stable Ca_(2)Mg(Si_(0.99)Cr_(0.01))_(2)O_(7)and FeCr_(2)O_(4)phases during the co-thermal treatment process.At the same time,Pb mainly existed as the residue fraction in the co-thermal treated product.Thus,the static and dynamic leaching behaviors of Cr and Pb in the co-thermal treated products were significantly inhibited.This study provides important reference value for the secondary heavy metal pollution control in fly ash and hazardous waste co-disposal.

关 键 词：危险废物 焚烧 飞灰 炉渣 重金属 浸出行为 共热处理 

分 类 号：X705[环境科学与工程—环境工程]