生物质灰渣露天堆放对地下水环境效应的影响The Impact of Air Exposed Biomass Ash on Groundwater Environmental Effects
王紫欣,李奥悉,李柯薇,刘汉湖,张双圣
摘要(Abstract)：
为研究生物质灰渣露天堆放对地下水的影响，以徐州睢宁某生物质能源有限公司生物质燃烧灰渣为研究对象，首先用X射线衍射仪（XRD）和VEGA扫描电子显微镜（SEM）对生物质灰渣的矿物组成和元素进行分析，然后开展室内翻转振荡实验，分析浸出液污染物浓度，结合现场地下水水质监测结果，使用污染指数法对灰渣露天堆放场地地下水环境效应进行评价。结果表明：生物质灰渣主要由非金属元素O、Si、Cl、S和金属元素K、Ca、Fe、Al、Mg、Na构成；灰渣室内翻转振荡18h后，每100g灰渣能浸出1.11mg总氮、0.32mg氨氮、0.41mg总磷；灰渣露天堆放场地地下水的氨氮浓度超过《地下水质量标准》GB/T 14848—2017中Ⅲ类水限值，结合室内翻转振荡可知，引起地下水氨氮浓度升高的原因为主要为灰渣雨水淋溶；使用污染指数法对A、B两地地下水进行评价，综合污染指数都超过1.0的标准限值，且主要污染物都为氨氮。
关键词(KeyWords)： 环境污染;生物质灰渣;露天堆放;氨氮;地下水;污染指数法
基金项目(Foundation): 淮北市重大科技专项“淮北市污水处理厂尾水生态处理及资源化利用技术研究”（HK2022AB001）
作者(Author): 王紫欣,李奥悉,李柯薇,刘汉湖,张双圣
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