工业水处理 ›› 2016, Vol. 36 ›› Issue (11): 29-33. doi: 10.11894/1005-829x.2016.36(11).029

• 试验研究 • 上一篇    下一篇

氨氮和硝酸盐氮对再生水管网腐蚀状况的影响研究

张雅君1, 杜婷婷2, 孙丽华1, 姚凌峰2, 范登云2   

  1. 1. 北京建筑大学城市雨水系统与水环境省部共建教育部重点试验室, 北京 100044;
    2. 北京建筑大学环境与能源工程学院, 北京 100044
  • 收稿日期:2016-09-15 出版日期:2016-11-20 发布日期:2016-11-22
  • 通讯作者: 孙丽华,博士,讲师。E-mail:sunlihuashd@163.com。 E-mail:sunlihuashd@163.com
  • 作者简介:张雅君(1965-),博士,教授。E-mail:zhangyajun@bucea.edu.cn。
  • 基金资助:

    国家自然科学基金项目(51278026)

Research on the influences of ammonia nitrogen and nitrate nitrogen on the corrosion status of reclaimed water pipe network

Zhang Yajun1, Du Tingting2, Sun Lihua1, Yao Lingfeng2, Fan Dengyun2   

  1. 1. Key Laboratory of Urban Stormwater System and Water Environment, Co-constructed Province-Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
    2. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • Received:2016-09-15 Online:2016-11-20 Published:2016-11-22

摘要:

在模拟真实管网水力条件下,从腐蚀速率、铁释放、腐蚀产物形貌及成分等方面,研究了氨氮和硝酸盐氮对碳钢腐蚀的影响。研究发现,加氨氮和硝酸盐氮的工况1与未加两种物质的工况2相比,工况1有更低的铁释放速率和腐蚀速率。两种工况腐蚀产物类型差别不大,腐蚀产物主要包括γ-FeOOH、α-FeOOH、Fe2O3、Fe3O4β-FeOOH,未检测出碳酸钙但出现一种新的晶型——钙磷石,整体来说工况1腐蚀产物密实、稳定性更好。

关键词: 氨氮, 硝酸盐氮, 腐蚀速率, 铁释放, 腐蚀产物

Abstract:

Under the conditions of simulated real pipe network hydropower,the influences of ammonia nitrogen and nitrate nitrogen on the corrosion of carbon steel in the aspects of corrosion rate,iron release,shape,composition,etc. have been studies. It is found that when Working Conditions l,in which ammonia nitrogen and nitrate nitrogen are added,is compared with Working Condition 2,in which the two kinds of substances are not added,Working Condition 1 has lower iron release rate and corrosion rate than Working Condition 2. The difference of the types of corrosion products of the two working conditions are not very big. The corrosion products mainly include γ-FeOOH,α-FeOOH,Fe2O3,Fe3O4,and β-FeOOH,No calcium carbonate has been detected,but a new type of crystal polymorph:brushite comes into existence. On the whole,the corrosion products of Working Condition 1 has better density and stability.

Key words: ammonia nitrogen, nitrate nitrogen, corrosion rate, iron release, corrosion products

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