摘要
为了弄清煤矿井下不同区域矿井水中有机污染特征,以神府矿区某浅埋矿井为研究对象,基于三维荧光指纹技术和区域体积积分法开展了矿井水水质特征研究。结果表明:神府矿区井下矿井水中阴阳离子等组分主要来自顶板基岩含水层,煤炭开采产生了氮素,有机物等污染物,其中COD浓度超标率(Ⅲ类地下水质量标准)达到72.7%;02综采工作面矿井水中COD则达到Ⅴ类地下水质量标准,且TOC和UV254也较高。1~5号矿井水中DOM主要出现了芳香性蛋白类有机质荧光峰;综采工作面矿井水中Ⅴ区荧光峰非常明显,该类有机质来自工作面回采和检修过程中综采设备溢油。1~5号矿井水中类酪氨酸和类色氨酸的标准体积比例Pi,n之和>52.0%,说明芳香性蛋白质有机物是本地区地下水中重要的DOM;02综采工作面水样中多环芳烃类有机物的标准体积比显著增加,反映了检修过程中大量多环芳烃类油污进入矿井水;矿井水处理厂进出水水质具有井下不同位置矿井水的综合特征,Ⅰ区和Ⅴ区有机质可以有效地被微生物利用或处理工艺去除。COD与Φi,Pi,n,FI,TOC,UV254的相关性较低,表明矿井水中COD的主要成分为非溶解性的煤泥等物质;UV254和TOC与Φi,Pi,n,FI的相关性显著增加,表明区域体积积分法和峰值法都能够很好地表征DOM的荧光特征、含量等。
In order to understand the organic pollution characteristics of mine water in different position of underground coal mine,one coal mine was used as an object of study in Shenfu mining area.The water quality characteristics of mine water were researched based on three dimensional fluorescence fingerprint technology and fluorescence regional integration.The results showed that the cations and anions in mine water were from coal seam roof aquifers.Some pollutants(e.g.nitrogen,organic)were from underground coal mining.The exceeding standard rate of COD was 72.7%more than third level standard for groundwater quality.The COD concentrations of 02 working face mine water were up to fifth level standard for groundwater quality,and TOC and UV254 were also high.There were aromatic protein fluorescent peaks in Mine water(No.1-5).RegionⅤfluorescent peaks were very obvious in working face mine water,and the organic matter was from fully mechanized mining equipment oil during coal mining and equipment maintaining.The sum of Pi,n and Pi,n of each mine water(No.1-5)was more than 52.0%of Pi,n,which showed that aromatic protein was very important DOM in groundwater of this area.The Pi,n of polycyclic aromatic hydrocarbons increased obviously in mine water of 02 working face,which showed that large quantities of oil leaked from fully mechanized mining equipment to mine water.The water quality of inlet water and outlet water of mine water treatment plant had comprehensive characteristics of mine water in different position of underground coal mine,and the organic matters of regionⅠand regionⅤcould be utilized by microbes and removed by mine water treatment processes.The low correlations betweenΦi,Pi,n,FI,TOC,UV254 indicated that undissolved slime was main component of COD.While there were high correlations between UV254 and TOC andΦi,Pi,n,FI,which showed that FRI and peak-picking technique could characterize the fluorescence characteristics and contents of DOM.
作者
杨建
王强民
刘基
王甜甜
张溪彧
YANG Jian;WANG Qiangmin;LIU Ji;WANG Tiantian;ZHANG Xiyu(Xi’an Research Institute,China Coal Technology&Engineering Group Corp.,Xi’an710054,China;Shaanxi Key Laboratory of Preventing and ControllingCoal Mine Water Hazard,Xi’an710054,China;China Coal Research Institute,Beijing100013,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2018年第S2期546-552,共7页
Journal of China Coal Society
基金
国家重点研发计划资助项目(2016YFC0501104)
煤炭开采水资源保护与利用国家重点实验室开放基金资助项目(SHJT-16-30.10)
中煤科工集团西安研究院有限公司创新基金面上资助项目(2018XAYMS03)
关键词
矿井水
DOM
三维荧光光谱
区域积分法
煤矿井下
mine water
dissolved organic matter
three-dimensional fluorescence spectroscopy
fluorescence regional integration
underground of coal mine
