硝化液回流比对缺氧-生物转盘工艺脱氮效果的影响

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英文篇名：Effect of Nitrification Liquid Reflux Ratio on Anoxic-Rotating Biological Disc Process for Denitrification 作者：马骏 ; 查晓 ; 吕锡武 英文作者：Ma Jun;Zha Xiao;Lu Xiwu;School of Energy and Environment,Southeast University;Taihu Lake Water Environment Engineering Research Center ,Southeast University; 关键词：硝化液回流比 ; 脱氮 ; 分散式生活污水 ; 生物转盘 英文关键词：nitrification liquid reflux ratio;;denitrification;;decentralized wastewater;;rotating biological disc 中文刊名：ZSJS 英文刊名：Water Purification Technology 机构：东南大学能源与环境学院;东南大学无锡分校无锡太湖水环境工程研究中心; 出版日期：2018-01-31 11:54 出版单位：净水技术 年：2018 期：v.37;No.187 基金：竺山湾农村分散式生活污水处理技术集成研究与工程示范(2012ZX07101-005) 语种：中文; 页：ZSJS201801012 页数：5 CN：01 ISSN：31-1513/TQ 分类号：67-71

摘要

针对"厌氧-缺氧-好氧-人工湿地"生物生态组合工艺中缺氧-好氧单元脱氮效率问题,提出采用水车驱动式生物转盘装置作为好氧单元,在低能耗条件下加强充氧效率,并从回流比出发,探究探讨系统强化脱氮的优化工艺参数。试验在温度为25~32℃的条件下进行,在回流比分别为300%、200%、100%和50%时,COD去除率分别为86.66%、82.12%、82.13%及63.86%,TN去除率分别为38.08%、51.23%、29.30%和20.99%。与生态单元联用运行期间,当硝化液回流比为200%时,出水水质可以稳定达到GB 18918—2002的一级A标准。
        A bio-ecological process is accomplished to evaluate effect of denitrification combining anaerobic baffled reactor, anoxic deodorant pool, aerobic waterwheel driving rotating biological disks and constructed wetland. As using waterwheel driving rotating biological disks as aerobic units, a part of nitrification liquid flows back to anoxic unit in order to increase oxygenation efficiency under the low-energy consumption conditions. This paper focuses on optimizing nitrification liquid reflux ratio during the process between anoxic and aerobic to improve denitrification efficiency. In all experiments,when water temperature is maintained between 25~32℃,and nitrification liquid reflux ratios are set to be 300%, 200%, 100% and 50%, removal rates for COD in biological unit are 86. 66%,82. 12%, 82. 13%, and 63. 86% respectively. Meanwhile, removal rates for TN achieve 38. 08%, 51. 23%, 29. 30% and 20. 99%,respectively. Moreover, effluent water from the system stably has the quality of the first grade A level in GB 18918—2002, when nitrification liquid reflux ratio is 200%.

引文

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