In processing 200 tons of raisins each day, the National Raisin Co., in Fowler, Calif., generates between 60,000 and 80,000 gallons of wastewater, mostly as it washes away dust, sugar, and other contaminants from the raisins. Having invested in a customized treatment system, the company is able to reuse this large volume of water, streamlining operations and saving hundreds of thousands of dollars a year. Throughout the food and beverage industry, businesses like National Raisin are examining w…