[1]刘沙沙,张卉,常珊,等.硝酸盐还原菌对给水铸铁管道的腐蚀特性研究[J].中国给水排水,2023,39(7):43-49.
　LIUSha-sha,ZHANGHui,CHANGShan,et al.Corrosion Characteristics of Nitrate-reducing Bacteria on Cast Iron Pipe for Water Supply[J].China Water & Wastewater,2023,39(7):43-49.
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硝酸盐还原菌对给水铸铁管道的腐蚀特性研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第7期 页码: 43-49 栏目: 出版日期: 2023-04-01
Title:
Corrosion Characteristics of Nitrate-reducing Bacteria on Cast Iron Pipe for Water Supply
作者:
刘沙沙1,2， 张卉1,2， 常珊3， 刘悦凯1,2， 王文东4
（1.西安建筑科技大学 环境与市政工程学院，陕西 西安 710055；2.西安建筑科技大学 西北水资源与环境生态教育部重点实验室，陕西 西安 710055；3.浙江省建筑设计研究院，浙江 杭州 310006；4.西安交通大学 人居环境与建筑工程学院，陕西 西安 710049）
Author(s):
LIU　Sha-sha1，2， ZHANG　Hui1，2， CHANG　Shan3， LIU　Yue-kai1，2， WANG　Wen-dong4
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Northwest China Key Laboratory of Water Resources and Environment Ecology， Xi’an University of Architecture and Technology， Xi’an 710055， China； 3. Zhejiang Province Institute of Architectural Design and Research， Hangzhou 310006， China； 4. School of Human Settlements and Civil Engineering， Xi’an Jiaotong University， Xi’an 710049，China）
关键词:
给水铸铁管道;  微生物腐蚀;  硝酸盐还原菌;  铁释放
Keywords:
cast iron pipe for water supply;  microbiologically influenced corrosion;  nitrate-reducing bacteria;  iron release
摘要:
我国的给水管道仍以铸铁管道为主，铸铁管道在长期使用过程中会产生腐蚀问题，容易造成饮用水二次污染。为此，采用实验室小型反应器，以蒙氏假单胞菌CS01为代表性硝酸盐还原菌，研究了不同硝酸盐初始浓度下细菌CS01对给水铸铁管道的腐蚀作用，并结合理化分析和失重法探究腐蚀产物特性和腐蚀速率。结果表明，细菌CS01的存在和NO3--N初始浓度的增大，有利于腐蚀产物中Fe3O4的生成，进而对腐蚀和铁释放起到抑制作用。在NO3--N初始浓度为20 mg/L条件下，总铁浓度和腐蚀速率均最低，分别为（2.30±1.25） mg/L、（0.036±0.003） mm/a（第170天），而且NO3--N消耗量以及NO2--N和NH4+-N生成量均达到最高；腐蚀产物以α-FeOOH（针状和层状）、CaCO3（粒状）和Fe3O4（球状）为主。
Abstract:
In China, water supply pipes are still mainly cast iron pipes, which will cause corrosion problem in the long-term service process and drinking water secondary pollution. Therefore, the corrosion effects of Pseudomonas monteilii CS01 on cast iron pipes for water supply under different initial nitrate concentrations was investigated in small laboratory reactors, and the characteristics of corrosion products and corrosion rate were explored by physical and chemical analysis combined with weight loss method. The presence of CS01 and the increase of initial NO3--N was conducive to the formation of Fe3O4 in the corrosion products, thus inhibiting the corrosion and iron release. When the initial NO3--N was 20 mg/L, the total iron concentration and corrosion rate were the lowest, which were (2.30±1.25) mg/L and (0.036±0.003) mm/a (at 170 days), respectively, and the consumption of NO3--N and the production of NO2--N and NH4+-N reached the highest values. The main corrosion products were α-FeOOH (needle-like and lamellar), CaCO3 (granular) and Fe3O4 (spherical).

相似文献/References:

[1]吴霖璟,朱延平,韩小蒙,等.供水管网中金属管材的微生物腐蚀机理及防护研究[J].中国给水排水,2023,39(24):34.
　WULin-jing,ZHUYan-ping,HAN Xiao-meng,et al.Research on Microbial Influenced Corrosion Mechanism and Protection of Metal Pipe in Water Supply Pipe Network[J].China Water & Wastewater,2023,39(7):34.

更新日期/Last Update: 2023-04-01