酸性高砷污泥稳定化固化的初步研究  

Preliminary Study on Stabilization and Solidification of Acidic High Arsenic Sludge

作　　者：钟琦 任雪娇 李行德 Zhong Qi;Ren Xuejiao;Li Hangde(Yunnan Dadi Fengyuan Environmental Protection Co,.Ltd.,Kunming 650000,China)

机构地区：[1]云南大地丰源环保有限公司,云南昆明650000

出　　处：《云南化工》2021年第10期50-51,58,共3页Yunnan Chemical Technology

摘　　要：金属冶炼过程中产生的含砷废渣对环境和人体毒性较大。以强酸性、含砷量较高的硫化砷渣为研究对象,使用过氧化氢为氧化剂,硫酸铜排除硫离子干扰,石灰和硫酸亚铁为稳定化固化药剂。结果表明,氧化后的硫化砷渣在弱碱性条件下加入10%的硫酸铜、40%的硫酸亚铁、20%的水泥,砷的浸出质量浓度为0.943 mg/L,低于危险废物填埋污染控制标准(1.2 mg/L)。The arsenic-containing waste slag produced in the metal smelting process is more toxic to the environment and humans,This experiment is aimed at arsenic sulfide slag with strong acidity and high arsenic content as the research object,Use hydrogen peroxide as oxidant and copper sulfate to eliminate sulfide ion interference,Use cheap and easily available lime and ferrous sulfate as stabilizing and curing agents,Make the leaching concentration of arsenic lower than 1. 2 mg/L of hazardous waste landfill pollution control standard. The results show,The oxidized arsenic sulfide slag is added with 10% copper sulfate,40% ferrous sulfate,and 20% cement under weak alkaline conditions. The leaching concentration of arsenic is 0. 943 mg/L.

关 键 词：高砷污泥 过氧化氢 硫酸铜 最佳用量 

分 类 号：X705[环境科学与工程—环境工程]