Anaerobic Digester Tank Lining – Fraddon, Cornwall

Anaerobic Digester Tank Lining – Fraddon, Cornwall

THE PROBLEM – Anaerobic Digester Tank Lining – Fraddon, Cornwall

The anaerobic digestion site required tank linings to two digester tanks and one post fermenter to protect the concrete from attack. We proposed the application of Remmers proven Epoxy Universal tank lining.

THE SOLUTION – Anaerobic Digester Tank Lining – Fraddon, Cornwall

All three tanks only required the top 1.2m of the walls protecting which would be exposed in the gas space.

The tanks were first prepared method of high pressure water jetting to remove surface contaminants, mould release and laitance in order to ensure excellent adhesion of the tank linings.

To fill the large amount of blow holes in the concrete a cementitious grout coat was first applied as paint alone will not fill blow holes. This provided a surface suitable to apply the epoxy tank linings to.

Once prepared all surfaces to be coated were primed using Remmers Epoxy MT100 moisture tolerant epoxy primer. This was followed by two coats of Remmers Epoxy Universal tank lining system which is specifically designed for anaerobic digester linings. This material can crack bridge to 0.2mm which is the design crack width for these style of tanks. This tank lining material has over 20 years of case histories in anaerobic digester linings.

As per our usual quality assurance the completed tank linings were spark tested to ensure the lining was free from pin holes. Where found these were touched in by brush.

A similar case study of the this methodology can be seen here –