KHIA headerKnow-How in Action

VOL XXXIII, NO 102

Belzona® 1212 Seals A Leak On A Wastewater Holding Tank

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Tanks and Chemical Containment Areas (TCC)

 
 

Customer Location:

Washington, USA

 
 

Application Date:

March 2018

 
 

Application Situation:

Sub-level wastewater lift station with a concrete holding tank.

 
 

Problem:

When the pipes were installed through the concrete wall, a grout was used to seal the area around the pipe. After many years of use, the grout began to fail, resulting in raw sewer water leaking into the pump room.

 
 

Products:

Belzona 1212

 

Substrate:

Concrete

 
 

Application Method:

The application was carried out in accordance with TCC-5 Belzona System Leaflet. A grinder was used to remove the paint and the loose and damaged grout around the pipe. The leak was depressurized by lowering the contents of the concrete tank. The crack was explored until it became clear we were into solid concrete and had identified the exact location of the source of the leak. We discovered the raw sewer water was coming through on the bottom right area, but was splitting and coming through the wall there, as well as coming through the wall in the top left area. Both areas were packed full of Belzona 1212 and smoothed over so the Customer could repaint the wall later.

 
 

Belzona Facts:

The alternative solution was to take the lift station off-line in order to remove all of the grout and re-grout, and then wait for the grout to dry, which would put extra pressure on other lift stations which could in turn cause a failure. This would also be very time consuming, and would have cost considerably more than the cost of the single unit of Belzona 1212.

 
 

Photographs Description

Sub-level wastewater lift station pump room.

Close up view of the leaking areas.

Belzona 1212 application complete.

Close up of one area of the application.

 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com