Aerobic Reactor

Industry:

Water Treatment,

Date:

2013,

Substrate:

Mild Steel Structure,

Products:

Epo-chem™ RS 500P –Wet & Rust tolerant 100% solids epoxy,

Epo-chem™ RA 500 – Wet & Rust tolerant glass flake filled 100% solids epoxy,

Environment:

Waste Water Effluent – pH 9,

Challenge:

To provide a cost effective coating system offering a long-term anti-corrosion solution that will ensure in excess of 15 years’ service life for an aerobic reactor.

Plant in operation             Corroded Floor              Application of top coat

Chemco’s Solution:

We recommended priming with RS 500P, followed by RA 500 top coat.

Scope:

• Abrasive blast to AS 1627.4 with a nominal 50-75µm profile.
• Application of 1 coat of RS 500P with a nominal DFT of 60-100µm.
• Check film thickness in a grid pattern (between coats)
• Strip coat using RA 500 Series on all welds and changes in direction to ensure coverage.
• Application of 1 coat of RA 500 Series with a nominal total DFT of 300µm.
• Carry out holiday test at 1.5kV to ensure no faults.
• Demobilise from site and removal of trade waste

Results:

Application costs for the aerobic reactor were kept to a minimum as the specified coating systems, RS 500P & RA 500 both feature moisture tolerant qualities during application. For this reason humidity and dew point are not a concern, negating the need for de-humidification. The coating system is easy to maintain with an expected life in excess of 15 years.