Water Treatment Filter Bay Concrete Linings

The time had come for all the filter bays to be completely relined at this Water Services Treatment Plant.

• INDUSTRY: Water Treatment
• LOCATION: Tennessee
• Year: 2023-2024

Additional information available upon request for job M23-018  / UB55

This Water Services Treatment Plant had 36 filter bays, each of which were 12’ x 40’ x 12’ deep. Over the course of 12 months, Universal Blastco was contracted to reline all of them. All of the work was completed while the facility was operating, so we had to take extra precautions to ensure menial dust production.

First, existing coatings on the walls were removed using a combination of bush hammering, grinding, wet blasting, and ultra-high-pressure (UHP) techniques. These methods were carefully selected to ensure minimal dust production while effectively preparing surfaces that varied from bare eroded concrete to deteriorating epoxy and rubber linings.

After removing the existing coatings, the walls were prepared to achieve a CSP-10 surface profile. This level of surface roughness ensured optimal adhesion for the new concrete coating. Before the application of the new coatings, any and all cracks in the concrete were top coated and pumped with injection resin to prevent leaks.

In the coating application process, the material SikaRepair 224 was sprayed on the walls at ¼ inch thick and troweled smooth by hand. The floor was sprayed and sloped to the drain of the tank to allow the water to drain without pooling.