| 邻苯二甲酸二(2-乙基己基)酯对硝化型曝气生物滤池的影响及其去除效能 |
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| 引用本文： | 李小冬, 王亚军, 曹相生, 孟雪征. 邻苯二甲酸二(2-乙基己基)酯对硝化型曝气生物滤池的影响及其去除效能[J]. 环境工程学报, 2015, 9(12): 5825-5830. doi: 10.12030/j.cjee.20151229 |
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| 作者姓名： | 李小冬 王亚军 曹相生 孟雪征 |
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| 作者单位： | 1.北京工业大学建筑工程学院水质科学与水环境恢复工程北京市重点实验室, 北京 100124 |
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| 基金项目： | 国家自然科学基金资助项目(51178006) 北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201304055) |
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| 摘 要： | 为探究邻苯二甲酸二(2-乙基己基)酯(DEHP)对硝化反应的影响及其去除情况,采用2座下向流硝化型曝气生物滤池进行对比实验.其中一座滤池进水DEHP浓度为100 μg/L,另一座滤池进水中不添加DEHP作为空白对照.对比实验期间氨氮负荷先后调整为0.6 kg NH4+-N/(m3·d)和1.5 kg NH4+-N/(m3·d)2个工况.通过60 d的对比实验,结果发现,2种工况下进水加DEHP的滤池,出水亚氮积累率分别为83.92%和80.71%,氨氮去除率分别为97.52%和49.39%;进水不加DEHP的滤池,出水亚氮积累率分别为64.15%和49.37%,氨氮去除率分别为98.77%和49.34%.DEHP的加入均促进了滤池出水中亚氮的积累,但对氨氮的去除不产生影响.进水加DEHP的滤池在0.6 kg NH4+-N/(m3·d)氨氮负荷下运行时,氨氮去除率沿水流方向逐渐提高,在滤床深度为1 400 mm处达到98.40%.亚氮积累率沿水流方向呈现先升高后降低的趋势,在滤床800 mm处达到最高值94.21%.在2个工况条件下,下向流硝化型曝气生物滤池对DEHP的平均去除率分别为91.71%和89.38%.大部分DEHP是在滤池进水端200 mm之内去除的.
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| 关 键 词： | 曝气生物滤池 邻苯二甲酸酯 硝化 亚氮积累 |
| 收稿时间： | 2014-12-08 |
Di (2-ethylhexyl) phthalate removal and its effects on a nitrification biological aerated filter |
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| Li Xiaodong, Wang Yajun, Cao Xiangsheng, Meng Xuezheng. Di (2-ethylhexyl) phthalate removal and its effects on a nitrification biological aerated filter[J]. Chinese Journal of Environmental Engineering, 2015, 9(12): 5825-5830. doi: 10.12030/j.cjee.20151229 |
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| Authors: | Li Xiaodong Wang Yajun Cao Xiangsheng Meng Xuezheng |
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| Affiliation: | 1.Key Laboratory of Beijing for Water Quality Science and Water Environmental Recover Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | To study the effects of di (2-ethylhexyl) phthalate (DEHP) on nitrification and its removal, two biological aerated filters were operated in parallel for 60 days. One filter's influent was with 100 μg/L DEHP while the other's was not. The two filters were run with the same ammonia loadings of 0.6 and 1.5 kg NH4+-N/(m3·d) successively. All results showed that, nitrite accumulation ratio in effluent reached 83.92% and 80.71%, and ammonia nitrogen removal efficiency reached 97.52% and 49.39% respectively under the two ammonia loadings for the filter fed with 100 μg/L DEHP. For the filter without DEHP adding, nitrite accumulation ratio in effluent were 64.15% and 49.37%, and the ammonia nitrogen removal efficiency were 98.77% and 49.34% respectively. DEHP in influent accelerates the nitrite accumulation but has no negative effects on ammonia removal. For the filter with DEHP in influent under the ammonia loading of 0.6 kg NH4+-N/(m3·d), percent of ammonia removal increased gradually along the flow direction and reached 98.40% at the filter bed depth of 1 400 mm. Nitrite accumulation ratio increased gradually and then decreased along the flow direction with the maximum accumulation ratio of 94.21% reached at the filter bed depth of 800 mm. The DEHP average removal efficiencies were 91.71% and 89.38% respectively under the two ammonia loadings. Most DEHP removal occurred in the initial 200 mm filter bed. |
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| Keywords: | biological aerated filter phthalate nitrification nitrite accumulation |
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