模拟陈腐垃圾掺烧过程中P/Cl/S对6种重金属迁移特性的影响  

Effects of P/Cl/S on the migration characteristics of six heavy metals during the co-combustion of simulated aged waste

作　　者：王思琪 唐玉婷[1,2] 陈鹏宇 张雨轩 WANG Siqi;TANG Yuting;CHEN Pengyu;ZHANG Yuxuan(School of Electric Power,South China University of Technology,Guangzhou 510641,China;Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Higher Education Institutes,Guangzhou 510641,China)

机构地区：[1]华南理工大学电力学院,广州510641 [2]广东省能源高效清洁利用重点实验室,广州510641

出　　处：《环境工程学报》2022年第1期237-244,共8页Chinese Journal of Environmental Engineering

基　　金：广州市科技创新发展专项资金资助项目(202002030105);广东省基础与应用基础研究基金自然科学基金资助项目(2114050000829)。

摘　　要：通过管式炉焚烧实验,探究了在陈腐垃圾与城市生活垃圾(MSW)掺烧过程中,P/Cl/S对6种重金属(Cd、Zn、Ni、Cu、Cr、Pb)迁移规律的影响,并考察了陈腐垃圾掺混比例、含特征元素的添加剂种类及焚烧温度对6种重金属挥发率的影响。结果表明,当陈腐垃圾掺烧比例与温度相同时,NaH_(2)PO_(4)和Na_(2)SO_(4)的协同作用对Cd挥发有显著的抑制作用,但对Ni、Cu的挥发起促进作用;NaCl对Zn的挥发有明显的抑制作用,但对Cr的挥发起促进作用;而NaCl和Na_(2)SO_(4)的协同作用促进了Pb的挥发。随着焚烧温度在设定范围(600~800℃)内的增加,Cd、Ni、Cr和Pb的挥发率整体呈增加的趋势。相比添加剂种类,陈腐垃圾掺混比例对Cd、Cr、Cu挥发率的影响更显著。本研究结果可为制定有效的重金属控制策略提供参考。In this paper,the migration patterns of P/Cl/S of six heavy metals (Cd,Zn,Ni,Cu,Cr,and Pb) and the effect of P/Cl/S on them during the blending of aged waste with municipal solid waste (MSW) were investigated using tube furnace as combustion reactor.The effects of the blending ratio of aged waste,the types of additives containing characteristic elements and the incineration temperatures on the volatilization rates of the six heavy metals were examined.The results showed that the synergistic effect of Na;SO;and NaH;PO;significantly inhibited the volatilization of Cd while promoted the volatilization of Ni and Cu.NaCl significantly inhibited the volatilization of Zn but promoted the volatilization of Cr;while the synergistic effect of NaCl and Na;SO;promoted the volatilization of Pb.The volatilization rates of Cd,Ni,Cr and Pb showed an overal increasing trend as the incineration temperature increased from 600 to 800.Compared to the types of additives the mixing ratios of aged refuse had more significant impact on the volatilization of CdCrCu.The results of this study will contribute to the subsequent development of effective heavy metal control strategies and promote the development of aged waste treatment technologies.

关 键 词：陈腐垃圾 重金属 掺烧 P/Cl/S 城市生活垃圾 

分 类 号：X705[环境科学与工程—环境工程]