飞灰和水泥对砷渣稳定化固化影响的初步研究  

Preliminary Study on the Effects of Fly Ash and Cement on the Stabilization and Solidification of Arsenic Slag

作　　者：柴晖 Chai Hui(Jiangxi Wanxiang Shengshi Environmental Protection Technology Co.,Ltd.,Shangrao Jiangxi 334000,China)

机构地区：[1]江西万象盛世环保科技有限公司,江西上饶334000

出　　处：《山西化工》2024年第3期238-239,260,共3页Shanxi Chemical Industry

摘　　要：某化工厂产生的危险废物砷渣,其浸出液总砷质量浓度为6679 mg/L,远超《危险废物填埋污染控制标准》(GB 18598—2019)。为降低砷渣浸出砷的含量,研究采用钙盐沉淀法脱砷,主要对比了不同比例下生产废料飞灰和生产原料水泥对砷渣的稳定化固化处理效果。结果表明,在m(飞灰)∶m(砷渣)∶m(水泥)=5∶1∶2,稳定化固化反应时间1 h,养护时间48 h的条件下,砷渣的稳定化固化效果以及经济性较好,砷的浸出质量浓度为0.587 mg/L。The total arsenic content of the leachate of hazardous waste arsenic residue produced by a chemical plant is 6679mg/L,which far exceeds the Hazardous Waste Landfill Pollution Control Standard(GB18598-2019).In order to reduce the content of arsenic leaching from arsenic residue,the arsenic removal method was studied by calcium salt precipitation,and the stabilization and solidification treatment effect of production waste fly ash and production raw material cement on arsenic residue under different proportions was mainly compared.The results showed that under the conditions of fly ash:arsenic slag:cement=5:1:2,stabilization and curing reaction time of 1h and curing time of 48h,the stabilization and curing effect and economy of arsenic slag were good,and the leaching mass concentration of arsenic was 0.587mg/L.

关 键 词：砷渣 飞灰 水泥 稳固化 

分 类 号：X789[环境科学与工程—环境工程]