摘要
随着矿井水处理排放标准不断提高,对去除矿井水中的氨氮的要求越来越高。虽然有多种方法可以去除废水中的氨氮,但是关于处理含氨氮矿井水的文献相对较少,缺乏有效的解决方案。针对这一问题,分析了矿井水中氨氮的来源和特点,综述了低浓度氨氮废水处理的主要技术,介绍了离子交换法、吸附法、氧化法、膜分离法和生物法等技术的特点及存在问题,旨在为我国处理含氨氮矿井水提供技术支撑。结果显示,矿井水中的氨氮主要来自三个方面,地下水中氨氮含量较高的本底,煤炭井下生产过程中使用的乳化液、抑降尘剂、注浆和凝胶材料等,及含氨氮污染地表水侧向补给。含氨氮矿井水具有氨氮含量相对较低(一般<5 mg/L)、pH呈中性或略偏碱、COD一般不高的特点。煤矿生产过程中,应尽量减少使用含氮基团的原料,收集处理生产废液和排泄物,从源头上控制氨氮的产生。对于低浓度(<2 mg/L)的氨氮矿井水处理,采用氧化法是较为合理的选择,而对于氨氮含量较高的矿井水,生物处理是一种经济有效的方法。针对含不同氨氮浓度的矿井水水质特征,研究和开发相应的化学氧化和生物处理技术是未来的发展趋势。
As the discharge standards for mine water treatment become more stringent,the requirements for effective removal of ammonia nitrogen from mine water are strongly needed.While there are several methods available for treating ammonia nitrogen in wastewater,there is relative scarcity of literature addressing the treatment of mine water specifically containing ammonia nitrogen.To address this issue,this paper conducted a comprehensive analysis of the sources and characteristics of ammonia nitrogen in mine water.It also reviewed various primary technologies used for treating low concentrations of ammonia nitrogen in wastewater,including ion exchange,adsorption,oxidation,membrane separation,and biological methods.The paper aimed to provide technical support for the treatment of ammonia nitrogen-containing mine water in China.The findings of the study reveal that ammonia nitrogen in mine water primarily originates from three sources:Naturally high ammonia nitrogen content in groundwater,the usage of emulsion,dust suppressants,grouting,and gelling materials in the underground coal production process,and the lateral recharge from polluted surface water containing ammonia nitrogen.Ammonia nitrogen-containing mine water is characterized by relatively low ammonia nitrogen content(generally<5 mg/L),neutral or slightly alkaline pH,and generally low chemical oxygen demand(COD)levels.In order to control the generation of ammonia nitrogen at its source,it is recommended to minimize the use of raw materials containing nitrogen in coal mining production processes.Additionally,it is advised to collect,treat and manage production waste liquids and excreta.For mine water with low concentrations of ammonia nitrogen(<2 mg/L),oxidation is considered a more reasonable treatment choice.On the other hand,for mine water with higher ammonia nitrogen content,biological treatment is a cost-effective approach.Considering the varying water quality characteristics of mine water with different concentrations of ammonia nitrogen,future development t
作者
李福勤
王丛
郑煚州
陈宇航
周如禄
LI Fuqin;WANG Cong;ZHENG Jiongzhou;CHEN Yuhang;ZHOU Rulu(College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;Hebei Technology Innovation Center of Water Pollution Control and Water Ecological Remediation,Handan 056038,China;Hebei Engineering Research Center of Sewage Treatment and Resource Utilization,Handan 056038,China;CCTEG Hangzhou Research Institute Co.,Ltd.,Hangzhou 311201,China)
出处
《能源环境保护》
2023年第6期55-63,共9页
Energy Environmental Protection
基金
河北省自然科学基金智慧矿山联合基金资助项目(E2021402015)。
关键词
含氨氮矿井水
吸附法
生物法
臭氧氧化
Mine water containing ammonia nitrogen
Adsorption method
Biological treatment method
Ozone oxidation
