ARMORTHANE CASE
STUDY: RESURFACING
A 35-YEAR-OLD WASTEWATER
FILTER BASIN
A wastewater treatment plant in Georgia, USA, needed to rehabilitate a 35-year-old concrete filter basin that was deteriorating after decades of service. We were tasked with restoring the basin’s integrity to be able to withstand constant exposure to water and harsh sewage chemicals; the concrete structure had developed cracks, surface wear, and areas of chemical attack from years of exposure to chlorinated water and hydrogen sulfide gases. The restoration was needed in the midst of an ongoing upgrade to the infrastructure, which required removing sections of the basin walls to install new effluent troughs, leaving fresh concrete patches that needed protection. We resurfaced and lined the entire basin with a thick, spray-applied ArmorThane polyurea coating, creating a seamless, durable barrier against moisture, chemicals, and physical wear for 35 more years or more of operation.
PROJECT OVERVIEW:
REPAIRING AGING
WASTEWATER
INFRASTRUCTURE
PROJECT OVERVIEW: REPAIRING AGING
WASTEWATER
INFRASTRUCTURE
The filter basin is a critical component of the plant’s treatment process, collecting and filtering millions of gallons of wastewater. After 35 years, the concrete basin was well-worn and showing its age. There were visible cracks and spalling, and prior coatings (if any remained) were failing. The newly installed troughs for improved water flow also had to be waterproofed to integrate with the basin. This scenario presented several challenges typical of wastewater infrastructure rehabilitation, and these challenges meant they needed a high-performance coating system that bonds tenaciously to old concrete, cures quickly to minimize downtime and offers long-term protection against a harsh wastewater environment.
