Client: |
Municipal Wastewater Treatment Plant |
Project: |
Sludge Bin (interior) |
Application: |
Primary Containment - Liner |
| Customer: |
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The Wastewater Treatment Plant dealt in the treatment and containment of raw sewage. The specifying company, Buchart Horn, Inc., provides consulting, engineering, environmental, project management, administrative, training and architectural services to federal, municipal, institutional and industrial clients throughout the US and Europe. |
| Problem: |
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 This wastewater treatment plant was incurring high maintenance costs as a result of corrosion problems with its sludge storage bin. The manufacturer of their storage bin had coated the stainless steel bin with a thin epoxy coating during the fabrication process. However, after only a short time in operation, the high levels of acid concentrate present in the sewage sludge had completely disintegrated the epoxy coating and had even begun eating away at the stainless steel. Additionally, due to the significant increase in the cost of steel, the replacement cost of the stainless steel storage bin had skyrocketed. The company was in dire need of an alternative solution to protect their expensive steel from high levels of acid concentrates contained within waste products.
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| Solution: |
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 The company approached Buchart Horn, Inc. for assistance in locating a protective lining for the project. Buchart Horn performed an in depth analysis of companies that offer thick protective linings products. After extensive research, the consulting engineer specified Rhino Linings’ Hi-Chem® formulation for the project because of its superior protective capabilities against permeation, corrosion and harsh chemicals. Midwest Industrial Coatings was the applicator of choice and asked to handle the project.
The bin was sand blasted to achieve a profile of approximately 2.5-3.5 mils, and then primed with Rhino Linings’ Primer 251®. A primer was necessary for this application because the chemicals inside the tank had been eating away at the metal. The bin was then sprayed with Hi-Chem at a thickness of 1/4” on the roof and sides and 3/8” on the base and auger. |
| Results: |
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The plant successfully eliminated their steel bin acid corrosion, significantly reducing equipment replacement and repair expenses, and maintenance cycle downtime.
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