Some water treatment problems are easier to solve than others. At a major producer’s prepared-meat plant, multiple requirements make water treatment tricky.

At its plant in the Southeast, the prepared-meat producer uses several evaporative condensers to chill both ammonia and cooling jacket water for refrigeration and packaging machines. With no flow pressure other than gravity, the heat transfer surfaces are prone to build up layers of scale that precipitate out of the water. In addition, copper cooling coils in the plant’s packaging machines require that the water be treated with copper corrosion inhibitors.

When the local water district required the elimination of all molybdenum from the plant’s discharge water, the plant managers turned to Garratt-Callahan, Burlingame, Calif., to come up with a new approach to the unique water treatment problem.

Garratt-Callahan’s product development laboratories modified the company’s Formula 2300, which is designed for use in galvanized evaporative condensers, by adding a copper corrosion inhibitor. The result, called Formula 2310, provides both high-performance scale control and copper corrosion control. And, it meets all of the plant’s discharge-water quality requirements.

Within a short time, inspections of an ammonia refrigeration compressor and condenser at the plant showed reductions in both scale and copper corrosion.

Instead of needing to be cleaned once a year or more - a job that required shutting down each cooling tower for at least a day - the towers now perform reliably at lower fuel and maintenance costs. The plant’s managers no longer operate in fear of water district fines. And Garratt-Callahan Formula 2310 has been adopted by other customers with similar water treatment requirements.

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