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(24):34-39.
Research on Microbial Influenced Corrosion Mechanism and Protection of Metal Pipe in Water Supply Pipe Network
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第24期
Page:
34-39
Column:
Date of publication:
2023-12-17
- Abstract:
- In the early stages of urban water supply pipe network construction in China, cement, galvanized steel and gray cast iron were the most commonly used materials in related projects. However, novel metal pipe materials such as ductile iron and stainless steel have been increasingly adopted in water supply pipe renovation projects in recent years. Research indicates that microbial influenced corrosion (MIC) poses a significant challenge to prevent or control when metal water supply pipelines transport domestic water containing chronically high levels of halogen ions (mainly chloride ions). The academic community has yet to establish a unified theory regarding the mechanism of MIC. The prevailing view suggests that the extracellular electron transfer mechanism (EET) plays an important role in MIC. This involves the specific electroactive biological membrane attached to the tube wall results in MIC, which is caused by direct electron transfer or indirect electron transfer. In response to the MIC issue with metal pipes, this study systematically summarizes three types of protection methods, including mainstream method of combining chemical sterilization and synergist, experimental novel sterilization methods with nanomaterials and the development of antibacterial stainless steel pipes. The aim is to provide reference and guidance in the promotion and application of metal water supply pipe networks.
Last Update:
2023-12-17