城市生活垃圾焚烧飞灰与矿山废水共处置技术研究与工程应用
发布时间:2018-01-25 23:49
本文关键词: 飞灰 矿山酸性废水 重金属 化学形态 浸出毒性 出处:《环境工程学报》2016年04期 论文类型:期刊论文
【摘要】:以城市生活垃圾焚烧飞灰和矿山酸性废水无害化处理为研究对象,设计了一条城市生活垃圾焚烧飞灰与矿山酸性废水共处置技术路线,利用焚烧飞灰和矿山酸性废水的酸碱性,加入重金属稳定化药剂,经处理可实现矿山酸性废水和垃圾焚烧飞灰中重金属的有效去除和稳定。矿山酸性废水的p H由2.33升至中性,废水中重金属Cu、Pb、Zn、Cd、Mn、Fe和As等浓度均有下降,可满足国家《污水综合排放标准》(GB 8978-1996)相关标准;垃圾焚烧飞灰中重金属Pb、Zn和Cd浸出浓度分别降低了92.1%、73.4%和95.2%,满足危险废物鉴别标准(GB 5085.3-2007)。
[Abstract]:Taking the harmless treatment of municipal solid waste incineration fly ash and mine acid wastewater as the research object, a co-treatment technology route between municipal solid waste incineration fly ash and mine acid wastewater was designed. Heavy metal stabilizer was added to fly ash from incineration and acid waste water from mine. After treatment, the removal and stabilization of heavy metals in mine acid wastewater and MSW fly ash can be realized. The concentrations of mn, Fe and as have decreased, which can meet the relevant standards of the National Comprehensive sewage discharge Standard (GB8978-1996). The leaching concentrations of Pb, Zn and CD in fly ash from MSW incineration decreased by 73.4% and 95.2%, respectively. Meet the hazardous waste identification standard GB 5085.3-2007.
【作者单位】: 浙江省环境保护科学设计研究院;新疆阿克苏(南疆)危险废物管理中心;
【基金】:浙江省科技计划项目(2014F10043)
【分类号】:X751;X799.3
【正文快照】: 矿山酸性废水是在矿山开采过程以及废弃后,矿坑及废矿石受氧化和雨水冲刷作用形成的。矿山酸性废水水量较大、p H值较低、含高浓度的硫酸盐和可溶性的重金属离子[1-2]。随着采掘业的发展,矿山酸性废水问题日趋严重。矿山酸性废水的处理方法有2种:一是源头控制,通过覆盖、钝化,
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