Case Study CH-1136 (Continued on Reverse Side) Essential Expertise for Water, Energy and Air Business Situation A leading processed food manufac- turer was using competitive waste- water treatment chemicals on their new belt press. Dewatering was inefficient with secondary solids requiring the facility to add 85 percent primary solids. This re- sulted in high sludge hauling costs (16 trucks per week). Nalco had recently started servicin

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