| 曝气生物滤地在污水回用中去除氨氮的试验研究 |
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| 引用本文： | 张彪,石晓东.曝气生物滤地在污水回用中去除氨氮的试验研究[J].给水排水,2009,35(Z2). |
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| 作者姓名： | 张彪 石晓东 |
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| 作者单位： | 北京金州工程有限公司,北京,100101 |
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| 摘 要： | 采用曝气生物滤地(BAF)工艺处理某污水处理厂模拟二级出水,研究了水力负荷及滤料层高度对NH_3-N去除效果的影响.试验结果表明,当进水NH_3-N≤25 mg/L时,平均NH_3-N去除率达到93.12%,出水NH_3-N可降至3 mg/L以下.当水力负荷为1.44 m~3/(m~2·h),HRT为1.8 h时,氨氮的去除效果最好,去除率达到95.32%,出水NH_3-N在1.5 mg/L以下.BAF对NH_3-N的去除作用主要发生在滤料的中上层.
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| 关 键 词： | 曝气生物滤地(BAF) 二级出水 氨氮 污水处理厂 |
Experimental study on the treatment of ammonia nitrogen in wastewater reuse by biological aerated filter |
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| Zhang Biao,Shi Xiaodong.Experimental study on the treatment of ammonia nitrogen in wastewater reuse by biological aerated filter[J].Water & Wastewater Engineering,2009,35(Z2). |
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| Authors: | Zhang Biao Shi Xiaodong |
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| Abstract: | Secondary effluent of wastewater treatment plant has been treated with the biological aerated filter (BAF) process. Its effects on NH_3-N removal of hydraulic load and height of filter media layer are studied. The results show that biological aerated filter can remove NH_3-N perfectly when NH_3-N concentration of influent≤25 mg/L. The average removal efficiency reaches 93.12%, and NH_3-N concentration of effluent is below 3 mg/L. When hydraulic load is 1.44 m~3/(m~2·h) and hydraulic retention time is 1.8 h, the optimal NH3-N removal efficiency of 95.32% has been got, and NH_3-N concentration of effluent is below 1.5 mg/L. Removal of NH_3-N by BAF mainly occurs in the middle and upper media layer. |
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| Keywords: | Biological aerated filter Secondary effluent Ammonia nitrogen Wastewater treatment plant |
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