不同填料曝气生物滤池处理微污染河水的效果  

Treatment Effect of Micro-polluted River Water by Biological Aerated Filters with Different Media

作　　者：聂中林 马赫 梁鹏[1] 黄霞[1] NIE Zhong-lin;MA He;LIANG Peng;HUANG Xia(School of Environment,Tsinghua University,Beijing 100084,China;China Three Gorges Corporation,Beijing 100038,China)

机构地区：[1]清华大学环境学院,北京100084 [2]中国长江三峡集团有限公司,北京100038

出　　处：《中国给水排水》2020年第17期41-48,共8页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07103-004)。

摘　　要：分别以陶粒、沸石-陶粒、两种弹性纤维材料为填料,在有效体积为150 L的填充床中,对曝气生物滤池(BAF)处理模拟城市微污染河水中氨氮和有机物的效果进行了试验,并对比了4种填料的特点和运行效果。结果表明:两种颗粒填料的氨氮硝化负荷要高于纤维填料,颗粒填料和纤维填料BAF的最佳HRT分别为1 h和1.5 h。在HRT为1 h时沸石-陶粒组合填料和陶粒填料的平均氨氮去除率分别为94.6%和93.7%,在HRT为1.5 h时两种纤维填料的平均氨氮去除率分别为89.5%和92.6%,且颗粒填料对氨氮的去除主要集中在填料高度60~100 cm的部分。水力停留时间对两种颗粒填料的进水压力和出水浊度影响较大,而对纤维填料影响较小。在气水比为2时,4种填料对氨氮和COD的去除效果好于气水比为1和3时的去除效果。纤维填料BAF的投资成本更高,但运行成本要明显低于颗粒填料BAF。Treatment effects of biological aerated filters(BAFs)on ammonia nitrogen and organic matter in urban micro-polluted river water were explored.Ceramsite,zeolite-ceramic composite and two kinds of elastic fiber materials were utilized as fillers in the packed bed with an effective volume of 150 L,and characteristics and performances of the four kinds of fillers were compared.Nitration loads of ammonia nitrogen of the two granular fillers were higher than those of the fiber fillers,and the optimal HRTs of the granular filler BAF and fiber filler BAF were 1 h and 1.5 h,respectively.The average ammonia nitrogen removal efficiencies of zeolite-ceramic composite filler and ceramic filler were 94.6%and 93.7%respectively when HRT was 1 h,and those of two fiber fillers were 89.5%and 92.6%respectively when HRT was 1.5 h.In addition,the removal of ammonia nitrogen by the granular filler was mainly concentrated on the filler height of 60-100 cm.HRT had a great influence on the inlet pressure and effluent turbidity of the two kinds of granular fillers,but it had little effect on the fiber fillers.When gas-water ratio was 2,the removal efficiencies of ammonia nitrogen and COD of the four fillers were better than those when the gas-water ratios were 1 and 3.The investment cost of fiber filler BAF was higher,but the operational cost was significantly lower than granular filler BAF.

关 键 词：沸石 陶粒 纤维填料 曝气生物滤池 微污染 

分 类 号：TU992[建筑科学—市政工程]