Cleaning Under Pressure: Municipal Sewer and Water Applications

Sewer and water systems contain endless varieties of tanks, vessels, digesters, lift stations and wet wells that require continued maintenance. In many cases, they’re cleaned using hoses, high pressure washing devices and brute human force supplied by workers who often enter tanks to achieve acceptable results.

What is the most important factor that contributes to a cleaning program?

Gamajet tank cleaning machines quickly and effectively clean wet well, manholes, and lift stations – all while eliminating the need for dangerous confined space entry for manual cleaning.

“To us, the most important factor in tank cleaning has nothing to do with cleaning the tank,” says Michael Delaney, vice president of business development with automated tank cleaning equipment manufacturer Gamajet. “It has to do with promoting worker safety by eliminating the use of confined-space entry while cleaning, when that cleaning could easily be handled by an automated system.”Gamajet was founded about 60 years ago, offering a cleaning system that applied detergent to the insides of ocean-going oil tankers. About 20 years ago, the company diversified to include tank cleaning across a number of industries using a wide range of cleaning systems and nozzles. The company’s approach to cleaning employs rotary impingement tank cleaning machines.

“The system combines pressure and flow to create high-impact jets, which clean when the concentrated stream impacts the enclosure’s interior surface,” says Delaney. “This impact and the tangential force that radiates from the point of impact blasts contaminants from the surface, scouring the tank interior. The action of the cleaner is a shearing force, which works more like a putty knife in removing material from enclosure walls. The jets rotate in a precise 360-degree pattern to ensure the entire interior is cleaned. It’s like a Spirograph that eventually covers the entire interior surface of the enclosure.”
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