溶解氧对河流底泥中氮去除的影响_刘春杰
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2020-01-11 10:50:51
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[收稿日期] 2011-06-15;2011-09-23修回 [基金项目] 国家科技重大专项之淮河水专项课题子课题4(2008ZX07010-001-004) [作者简介] 刘春杰(1984-),女,在读硕士,研究方向:水污染控制。E-mail:liuchunjie_001@163.com[文章编号]1001-3601(2011)11-0714-0202-03溶解氧对河流底泥中氮去除的影响刘春杰,李金荣,王莉,陈停(郑州大学水利与环境学院,河南郑州450001) [摘 要]为探索溶解氧(DO)对河流底泥中氮释放和去除的影响,选择城市污染河流底泥,通过室内模拟不同的DO条件,观察河流上覆水中氨氮、亚硝态氮和硝态氮之间相互转化的规律。结果表明:底泥是主要的二次污染源,氮污染物质以氨氮的形式向上覆水体中释放;DO浓度越低越有利于底泥中氨氮的释放,DO浓度越高水体中氨氮去除越快。同时试验过程中出现了短程硝化好氧反硝化和短程硝化厌氧氨氧化的现象。[关键词]溶解氧;河流底泥;三氮转化[中图分类号]X522[文献标识码]AEffect of Dissolved Oxygen on Nitrogen Removal in River SedimentLIU Chun-jie,LI Jin-rong,WANG Li,CHEN Ting(School of Water Conservancy and Environment,Zhengzhou University,Zhengzhou,Henan450001,China) Abstract:The mutual transformation regulation among ammonium nitrogen,nitrate nitrogen andnitrite nitrogen in overlying river from the polluted river sediment was studied under different indoordissolved oxygen conditions to probe the effect of dissolved oxygen on nitrogen removal in river sediment.The results showed that the sedimen
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