Water & Wastewater Coating & Repair Services

Immersion is the hardest service a coating sees, and it is the default condition here. Clarifier floors, basin walls, and steel tanks corrode where flow turns stagnant and the old lining has worn through. AAS prepares the interior and applies the lining as one continuous cold-cure film. There are no liner-replacement weld seams to recoat and no heat soak on thin shell steel. The asset comes back inside the same shutdown the utility already scheduled.

For potable assets, we work only with materials certified safe for direct drinking-water contact, on both steel tanks and the concrete in tanks and channels. Secondary containment and process walls get a chemical-resistant lining matched to the worst-case spill. Tank bases get the steel-to-concrete chime sealed against the water ingress that rots floor plate from underneath. Digesters and process vessels that run hot and aggressive take a ceramic-filled immersion lining built for that load.

Pumps and valves are where lost efficiency shows up on the power bill. Erosion-corrosion and cavitation reshape impeller vanes and casing profiles, pulling a pump off its head curve. AAS rebuilds the vane geometry and casing wear areas, then lays a smooth coating to restore the hydraulic profile. There is no weld heat, so the impeller does not need rebalancing for a heat-affected zone. Cavitation-prone surfaces get a cold-applied elastomer that absorbs the implosion energy instead of letting it pit the metal.

Valve bodies erode at the flow path and corrode at the gasket faces, and they fail there long before the trim or actuator does. We rebuild the eroded body cavities and bonnet faces cold, then overcoat with an erosion-resistant layer, so the valve is restored without cutting it out for the shop. Worn shafts, journals, and keyways are rebuilt cold and machined back to the specified diameter. Pump and machine bases get re-grouted to spread load evenly and pull vibration out of the rotating gear.

The concrete around a plant takes a beating from spalling, acid attack, and exposed rebar that keeps the spall cycle running. AAS rebuilds and resurfaces damaged concrete cold, from crack patching to deep bulk-fill. We prime exposed reinforcing bar before rebuilding the cover, so the corrosion that caused the spall actually stops. Acid-retaining walls, drains, and channels get a chemical-resistant lining over prepared concrete. Worked joints get resealed with a flexible compound that flexes instead of splitting open again.

Structural steel, handrails, supports, and skids lose their paint or galvanizing at edges and welds. We blast-clean the steel and apply a barrier coating that resets the recoat clock and keeps a corroded handrail anchor from becoming a fall hazard. Pipework and tank exteriors get the same treatment at supports, girth welds, and coating gaps before metal loss reaches an inspection limit.

Bends, tees, and elbows wear first because flow turbulence concentrates erosion and corrosion at every change of direction. AAS lines and wraps those contoured fittings with a composite that follows the geometry, so the spool stays in place rather than getting cut out and re-welded. For thinned or damaged pressurized pipe, we apply an engineered resin-and-fiber wrap while the line stays online. That work follows the recognized composite-repair practices the inspection world knows, ISO 24817 and ASME PCC-2.

When a line is already weeping, we seal the live leak cold with the line still pressurized, then overwrap it for a permanent fix, with no product evacuation and no hot work. Corroded pipe and tank walls, pinholes, and through-wall defects get rebuilt with compounds that bond to damp, contaminated steel. The result across all of this work is the same. The basin stays wet, the flow keeps moving, the downtime stays inside the window you planned, and the repaired asset comes back on its design profile instead of waiting on a replacement order. If it cannot wait, the 24-hour on-call crew is already nearby on Louisiana.