[1]张卉,张洁,苗梓怡,等.给水管道中铁氧化细菌生长特性优化及腐蚀研究[J].中国给水排水,2025,41(5):58-64.
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给水管道中铁氧化细菌生长特性优化及腐蚀研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第5期 页码: 58-64 栏目: 出版日期: 2025-03-01
Title:
Optimization of Growth Characteristics and Corrosion Behavior of an Iron-oxidizing Bacterium in Water Supply Pipelines
作者:
张卉1， 张洁1， 苗梓怡1， 刘沙沙2， 刘卓1， 卢金锁1
（1.西安建筑科技大学 环境与市政工程学院，陕西 西安 710055；2.常州市建筑科学研究院集团股份有限公司，江苏 常州 213000）
Author(s):
ZHANG　Hui1， ZHANG　Jie1， MIAO　Zi-yi1， LIU　Sha-sha2， LIU　Zhuo1， LU　Jin-suo1
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Changzhou Building Research Institute Group Co. Ltd.， Changzhou 213000， China）
关键词:
给水管道;  铁氧化细菌;  腐蚀;  铁释放
Keywords:
water supply pipeline;  iron-oxidizing bacterium;  corrosion;  iron release
摘要:
给水管网的腐蚀问题已经成为供水行业普遍关注的热点，其中微生物腐蚀是重要因素之一。结合一株实际给水管道铁氧化细菌LSS-1，研究了不同碳源、pH、C/N值和温度对其生长的影响，确定了LSS-1的最优生长条件为：pH=7.28、C/N值=5.32、温度=28.45 ℃。这三个因素对LSS-1生长影响的排序为：pH>C/N值>温度。此外，利用总铁、二价铁、腐蚀速率和腐蚀产物特征，对LSS-1的腐蚀过程进行了定量分析。结果发现，总铁和二价铁浓度均呈现先升高后降低的趋势，且在16 d时达到最大值，分别为12.56和0.31 mg/L；腐蚀速率在第10天达到最大值0.73 mm/a，在第30天时达到最小值0.21 mm/a。
Abstract:
The corrosion of water supply networks has emerged as a critical concern within the water supply industry, with microbial-induced corrosion being a significant contributing factor. In conjunction with the iron-oxidizing bacterium LSS-1 isolated from water supply pipelines, this study investigated the impact of carbon sources, pH, C/N ratio, and temperature on its growth. The optimal growth conditions for LSS-1 were identified as pH of 7.28, C/N ratio of 5.32, and temperature of 28.45 ℃. The relative influence of these three factors on LSS-1 growth in descending order was pH, C/N ratio and temperature. Furthermore, the corrosion process of LSS-1 was systematically evaluated through quantitative analysis of total iron concentration, ferrous iron concentration, corrosion rate, and characteristics of corrosion products. The concentrations of total iron and ferrous iron initially increased and subsequently decreased, reaching their peak values on 16th day at 12.56 mg/L and 0.31 mg/L, respectively. The corrosion rate peaked at 0.73 mm/a on 10th day and reached its minimum value of 0.21 mm/a on 30th day.

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更新日期/Last Update: 2025-03-01