Case Study: Gerber Dryden Aqua’s Deliverables: Project ID: Company: Gerber Location: Costa Rica Year: 2003 Description: Process water for baby food manufacturing plant Goal: Ferric, Manganese and Hydrogen Sulfide Removal Capacity: 65 m 3 /hr Water Source: 3 private deep wells Parameter Existing Values Required Value Turbidity (NTU) 30 < 5 Coliform Forming Units (CFU/100 ml) 10,000 < 10 Color (UC) 100 < 15 Ferric (mg/l) 7 < 1 Manganese (mg/l) 2 < 0.2 The Problems: • The plant’s well water contained Ferric, Manganese and Hydrogen Sulfide. • Water color and turbidity above the maximum allowable level. • Un-controlled chlorine levels. • High delta pressure on the media filters was reducing the flow rate. • Microbiological contamination, especially by sulfate reducing bacter

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