CP Kelco is a global producer of hydrocolloids. At the facility in Denmark they needed the floor of 2 sewage water tanks 450 m2 each to be re-coated. The facility could not live with a long shutdown time because of a 50 % reduction of production in the factory.
Sewage purifying tanks, like these from the Emek Hefer Region of Israel, are designed to purify waste water from the surrounding town. Waste water contains many harsh substances that slowly ingress into the walls and floor of the tank, degrading the metal and causing the sewage to leak and contaminate the groundwater. A solution was needed to provide a watertight barrier that could prevent the numerous chemicals and acids from seeping into ground water. The chosen application would have to offer a very quick turn-around to allow the water purification system to return to service with minimal disruption.
Concrete is extremely susceptible to water damage. Because concrete is porous, water can easily permeate a building’s foundation causing damage. The best way to prevent water from penetrating concrete is to seal any pores and cracks with a waterproof membrane on the outside of the foundation.
Concrete, with its porosity and high-pH, is susceptible to many forms of decay. Continuing maintenance on concrete structures is a very costly necessity; corroding concrete lose sits strength and structural integrity and often leads to corrosion of the rebar within.