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Page 18 of 40 <br /> Treatment Process Description <br /> Neutralization of Spent Acid <br /> Our acid cleaning solution is used in a portable circulating system <br /> that can be moved to the equipment to be cleaned. The spent acid is <br /> neutralized by adding a small amount of caustic. When the pH is neutral, <br /> the contents of the cleaning system is flushed to the industrial sever <br /> system. <br />