Exploring Biological Corrosion in Deep-Sea Pipelines Using Bioinformatics Technology

Abstract

The complexity of the deep-sea environment brings challenges to the study of pipeline corrosion. In this paper, from the perspective of bioinformatics technology, the combination of high-throughput sequencing technology and in-situ measurement of microelectrode system was used to explore the changes of micro environmental components such as dissolved oxygen concentration, pH value and ion concentration, and to complete the simulation of deep-sea biological environment. A water environment simulation test device was set up in the raw water plant to carry out biological corrosion experiments on metal pipelines, and the change process of water quality, corrosion rate and the characteristics of iron ion release under different operation times were studied, and the changes of fouling organisms, corrosion product elements, etc. were analyzed. Taking the corrosion products of cast iron pipe in the group without biofilm for 1 week as an example, the metal elements in the corrosion products were mainly Fe and Ca, Mg, and the self-corrosion potential of the specimen gradually moved towards the negative direction during the whole experimental cycle, and the amplitude of the change was not more than 0.12 V. Through the detection of pipeline biocorrosion and the environment, it can provide a reference for the protection of the deep-sea pipeline.