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Maple Glen Pump Station — Wet Well Repair

When most people flush their toilets, they give little thought to where the waste goes until there is a problem. Thanks to polyurea technology, the sewage pump stations serving homes will give folks one thing less to worry about. Sewage pump stations are normally located in residential and commercial areas to transfer waste to a treatment facility. The sewage to be transferred is retained in concrete containment vaults, commonly referred to as a wet wells, until it reaches a level that it is automatically pumped out.

Over time, the concrete and steel in wet wells begin to corrode due to the substances they are containing. Sewage naturally gives off hydrogen sulphide gas. When the gas comes into contact with water, it turns into sulphuric acid that will decay the binder in the concrete as well as
reinforcing steel embedded in the concrete. Although a coating is usually applied to help prevent this when the wet wells are built, the coating is generally a thin film epoxy or coal tar applied at 10 mils or less. This does not adequately fill in high and low points in the naturally uneven surface of the concrete. Polyurea is a better alternative because it will fill in “bug holes” pinholes, and other surface irregularities giving the customer a monolithic, seamless, flexible and chemically resistant lining to the concrete tank.








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