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Aerobic Reactor


Aerobic Reactor


Water Treatment,






Mild Steel Structure,



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

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



Waste Water Effluent – pH 9,



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.



  • 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



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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