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Aerobic Reactor

chemco-marine.jpg

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.

 

aerobic reactor WATER 3 Photo 2 WATER 3 Photo 3

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.

 

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