两级UBAF法处理褐煤热压提质冷凝水试验研究  

Treatment of lignite upgrading condensate water using two-stage UBAF

作　　者：张春晖[1] 彭忱[1] 刘丽娟 刘新 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中铁工程设计院有限公司,北京100070 [3]北京市平谷区环保局,北京101200

出　　处：《洁净煤技术》2015年第1期112-116,共5页Clean Coal Technology

基　　金：中国工程院重点项目(2015-06-XZ-01)

摘　　要：针对内蒙古宝日希勒煤业公司褐煤热压提质冷凝水浊度、化学需氧量（CODCr）、生化需氧量（BOD5）、氨氮（NH3-N）和Mn元素等指标均高于电厂循环冷却水回用标准的问题,将两级升流式曝气生物滤池（UBAF）反应器串联处理冷凝水,研究提质褐煤粒级对滤料效能及两级UBAF反应器对褐煤提质冷凝水处理效果的影响。结果表明,粒级0.5~1.25 mm提质褐煤滤料对废水的处理效果最好,其次为全粒级提质褐煤,二者处理效果差别较小,综合考虑滤料处理效果和工艺成本等因素,最终选用全粒级提质褐煤作为UBAF反应器的滤料,其CODCr及NH3-N的去除率分别达到33.2%和11.5%。采用两级UBAF反应器对褐煤热压提质冷凝水进行处理,其出水水质各项指标低于电厂循环冷却水回用标准,浊度、BOD5、CODcr、NH3-N、Mn的最终去除率分别达到89.40%、96.20%、87.60%、62.30%和72.50%。处理后的褐煤提质冷凝水符合回用标准,可用于循环冷却水的回用。In order to decrease the turbidity,CODcr,BOD5,NH3-N and Mn content in lignite upgrading condensate water which was collected from Baorixile coal mine in Inner Mongolia,the two- stage up- flow biological aerated filter（ UBAF） was connected in series. The treatment effects of UBAF and lignite size was also investigated. The results showed that,0. 5 ~ 1. 25 mm lignite had the best treatment effects,followed by the whole size fraction upgrading lignite.The treatment effects of the two was similar. Considering the treatment effects and cost,the whole size fraction upgrading lignite was adopted as the filter material of UBAF.The removal rate of CODcrand NH3-N was33.2% and 11.5%.The removal rate of turbidity,BOD5,CODcr,NH3-N and Mn element in condensate water reached 89.40%,96. 20%,87. 60%,62.30% and 72.50%.The treated condensate water could be used as circulating cooling water.

关 键 词：褐煤提质冷凝水 资源化回用 循环冷却水 两级升流式曝气生物滤池法 

分 类 号：X703[环境科学与工程—环境工程]