How to effectively prevent corrosion on the inner walls of industrial wastewater pipes?
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We know that the metal sewage pipes in industrial systems have not been protected against corrosion (on their inner walls), and the anti-corrosion materials used are inappropriate. It can cause the sewage pipes to corrode more rapidly or develop corrosion holes, thereby shortening their service life. What protective measures can be taken to increase the service life of sewage pipes?
Over a decade ago, at the Jiangsu oil field, I was responsible for cleaning oil pipelines by removing debris and rust, as well as applying cement and epoxy coatings, before handing them over for use by the oil field
The repair costs can be reduced to 30% of the original cost, as for the lifespan, it’s hard to say
It was many years ago; the smallest pipes had a diameter of φ108, while the largest ones reached over 300 in diameter
For pipelines these days, in addition to strictly controlling the quality of the raw water and reducing the oxygen content in it, cathodic (anodic) protection is also used; it’s similar to attaching zinc plates to ships – more or less that idea
Another option is to use linings, such as fluoroplastic lining or enamel
Good, it can be systematically summarized for everyone to share.
It would be best to provide information regarding the conditions of the sewage pipes, especially with regard to internal protection. Different products have their own specific characteristics, and it is crucial to choose the right product
Using PE for lining general wastewater is the most cost-effective option; of course, different types of wastewater require different types of pipes