Wastewater Pond Anti-corrosion Construction Process and Paint Selection

The wastewater pond, having been in contact with acidic and alkaline waste liquids and subjected to microbial corrosion over a long period, necessitates strict adherence to a scientific process for anti-corrosion construction, with the selection of coatings being the core aspect.

Construction Process

00001. Field-level processingFirst, remove the froth, oil污, and cracks from the concrete surface. Grind it down with an angle grinder to expose a solid base, then clean it thoroughly with a high-pressure water jet, ensuring the surface moisture content is ≤8%. If there are honeycomb-like surfaces, they must be patched with epoxy putty to even them out, which is crucial for ensuring the coating's adhesion.

00001. Priming Coat ApplicationA layer of primer is evenly applied to the base material after processing to enhance adhesion, typically using a roller or scraper, with a thickness of 50-80μm. The next step can be performed after 24 hours.

00001. Intermediate CoatingAccording to the design specifications, apply 2-3 intermediate coatings, each with a thickness of approximately 100μm, ensuring continuous application without any gaps. Build a robust protective barrier through multiple coatings, with at least a 12-hour interval between each coat.

00001. Surface Paint ApplicationA single coat of surface paint enhances overall corrosion resistance and weather resistance, with a thickness of approximately 50-80μm. The surface must be cured for more than 7 days before it can be put into use.

Paint Selection

Corrosion-resistant coatings for sewage ponds must meet the requirements of resistance to acids and alkalis, anti-penetrability, and strong adhesion to concrete.Specialty Cyanogen-based Waterproofing and Anticorrosion CoatingIt is the ideal choice as a two-component rigid coating, offering compressive strength over 20MPa after curing, capable of withstanding long-term erosion from acidic and alkaline substances in wastewater. Its molecules can penetrate deep into the concrete micropores to form chemical bonds, boasting excellent impermeability. A three-layer coating with a thickness of 300 micrometers effectively prevents wastewater penetration. It can be brushed on after mixing in proportion, with a single coat thickness of 100μm, reducing the construction period by 40%. Particularly suitable for damp and complex environments like wastewater pools, it balances protection and construction efficiency.