What the Heck is Ice Pigging?

What the Heck is Ice Pigging?
The inside of a pipe shows the buildup of iron and manganese prior to ice pigging (left) and the pipe cleared of iron and manganese impurities after ice pigging (right).

Traditional “pigging” involves sending a mechanical device — or pig — down a pipe to clean or inspect it. Its descendant, ice pigging, substitutes abrasive ice brine slurry for the mechanical pig, allowing it to scour the interiors of water and sewer pipes. 

The technique was...

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