Innovative, cost-reducing water treatment at large US citrus processor

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Courtesy of VRTX Technologies

The objectives of this case study conducted in 2003-2004 were to: (a) provide scale, corrosion and microbiological control to a state-of-the-art facility which cools one of the largest refrigerated enclosures in North America, (b) improve condenser operating efficiency over the existing condenser systems (c) conserve water by minimizing condenser make up discharge, (d) produce a reduced quantity of condenser bleed that possessed minimal pollution and (e) implement environmental improvements and worker safety wherever possible.

Based on the data obtained from the study, all objectives were met, operating expenditures were reduced and the facility successfully continues to use the controlled hydrodynamic cavitation (CHC) technology.

The project objectives for the CHC system were as follows:

• Performance equal to or better than traditional methods of chemical treatment on the evaporative condenser water that rejects heat from the ammonia compressor system.
• Reduce or eliminate toxic and hazardous chemicals and improve worker safety and environmental compliance.
• Significant water savings. Measurement to be via cycles of concentration and reductions in makeup and blow down.
• Corrosion control equal to or less than Cooling Technology Institute (CTI) recommendations.
• Scale control equal to or better than those achieved from traditional chemical water treatment.
• Biological control equal to or better than CTI recommendations.
• Justifiable project cost savings.
• Ability to generate a reusable water source for non-potable applications from the bleed.
• The on-site ability to compare the CHC system with chemical treatments.

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