褐煤提质冷凝水的回用处理工艺研究  

Re-use Treatment of Lignite-Derived Water Produced From Hot Press Upgrading

作　　者：张春晖[1] 何绪文[1] 朱书全[1] 王晓婵 王皓 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083 [2]北京神州瑞霖环保科技有限公司,北京100081

出　　处：《中国矿业大学学报》2010年第6期911-917,共7页Journal of China University of Mining & Technology

基　　金：国家高技术研究发展计划(863)项目(2008AA06Z305);国家自然科学基金项目(20907072)

摘　　要：为了将褐煤热压提质过程中产生的大量褐煤提质冷凝水作为褐煤电厂的循环冷却水使用,以内蒙古宝日煤矿所产褐煤作为实验样品,对褐煤热压提质过程中产生的冷凝水进行了水质分析;采用厌氧-缺氧-好氧生物法(A2/O)处理工艺对DO和温度2个影响因素进行了动态模拟实验;采用升流式曝气生物滤池(UBAF)处理工艺分别测试了粒径为0.50～1.25,1.25～2.00,2.00～3.00mm和全粒径的褐煤滤料对褐煤提质冷凝水的处理效果,并采用A2/O和UBAF组合工艺对褐煤提质冷凝水进行了处理.结果表明:未经处理的褐煤提质冷凝水中的浊度、BOD5,CODCr,Mn和NH3-N等指标均超过电厂中再生水用作循环冷却水的水质控制指标,经A2/O和UBAF组合工艺处理后的褐煤提质冷凝水水质可满足电厂中再生水用作循环冷却水的水质控制指标,实现了水资源的循环利用.For the reuse of the large amount of lignite-derived water as power plant＇s circulating cooling water,the quality of lignite-derived water was analyzed based on the lignite sample taken from Baori,Inner Mongolia.The two influence factors of DO and temperature were dynamically simulated through the process of A2/O,the treatment effects of four different diameters lignite（0.50-1.25,1.25-2.00,2.00-3.00mm and mixed size）were tested through the process of UBAF,and the lignite-derived water was treated by the combined process of ‘A^2/O＋UBAF＇.After the treatment,the results show that the property parameters of lignite-derived water such as turbidity,BOD5,CODCr,Mn and NH3-N are in breach of the reuse limits for power plant＇s circulating cooling water,and the quality of lignite-derived water treated by the combined process of‘A^2/O＋UBAF＇can meet the reuse limit for power plant＇s circulating cooling water in China,which achieves the reuse of water resources.

关 键 词：褐煤提质冷凝水 A^2/O工艺 UBAF工艺 组合工艺 回用处理 

分 类 号：TQ536[化学工程—煤化学工程]