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

作　　者：王紫欣 李奥悉 李柯薇 刘汉湖[1] 张双圣 WANG Zixin;LI Aoxi;LI Kewei;LIU Hanhu;ZHANG Shuangsheng(School of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou,Jiangsu 221116;Jiangsu Xuhai Environmental Monitoring Co.,Ltd.,Xuzhou,Jiangsu 221000;School of Environmental Engineering,Xuzhou Institute of Technology,Xuzhou,Jiangsu 221018)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]江苏徐海环境监测有限公司,江苏徐州221000 [3]徐州工程学院环境工程学院,江苏徐州221018

出　　处：《中国煤炭地质》2024年第11期65-70,共6页Coal Geology of China

基　　金：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)。

摘　　要：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。To study the impact of air exposed biomass ash on groundwater,the biomass ash of a certain biomass energy limited company in Suining,Xuzhou,was taken as the research object.Firstly,the mineral composition and elements of biomass ash were analyzed using X-ray diffractometer(XRD)and VEGA scanning electron microscopy(SEM).Then,indoor flipping oscillation experiments were conducted to analyze the concentration of pollutants in the leaching solution.Combined with the results of on-site groundwater quality monitoring,the pollution index method was used to evaluate the groundwater environmental effect of the air exposed biomass ash.The results show that biomass ash is mainly composed of non-metallic elements O,Si,Cl,S and metallic elements K,Ca,Fe,Al,Mg,Na.After flipping and oscillating for 18 hours indoors,every 100g of ash can leach 1.11mg of total nitrogen,0.32mg of ammonia nitrogen,and 0.41mg of total phosphorus.The ammonia nitrogen concentration in the groundwater of the air exposed ash storage site exceeds the Class III water limit in the"Groundwater Quality Standard"(GB/T 14848-2017).Combined with indoor flipping oscillation experiments,it can be concluded that the main reason for the increase in ammonia nitrogen concentration in groundwater is the leaching of ash and rainwater.The pollution index method was used to evaluate the groundwater of A and B,and the comprehensive pollution index exceeded the standard limit of 1.0,with the main pollutant being ammonia nitrogen.

关 键 词：环境污染 生物质灰渣 露天堆放 氨氮 地下水 污染指数法 

分 类 号：X523[环境科学与工程—环境工程]