Challenge

The Morrilton Wastewater Treatment Plant relies on a rare auger system to transfer water to its lagoon. Over time, one of the two augers had deteriorated significantly.

• Operational capacity: The first auger functioned at full capacity — 6,000 GPM.
• Reduced performance: The second was limited to just 2,400 GPM due to damage.

With the wet season approaching, restoring the system’s full efficiency was critical to prevent backups and overflow risks.

Diagnosis

Our team conducted a thorough inspection and identified the root cause:
Structural voids beneath the auger blades, created by a failed bearing several years prior. These voids compromised the auger’s integrity and performance.

Solution

To restore full capacity and ensure long-term durability, our crew implemented a two-step repair approach:

1. Rebuilding the Voids:
   We injected closed-cell polyurethane foam to fill and stabilize the voids beneath the auger blades.
2. Protective Coating Application:
   We applied OBIC 1200 C, a high-performance, abrasion-resistant coating, to reinforce and protect the system against future wear and chemical exposure.