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Water Use in a Multiproduct Dairy¹

North Carolina State University, Raleigh 27650

ABSTRACT

Water use was monitored in a multi-product dairy plant by 25 cumulative use meters. Twenty-two of the meters were located in the building for product processing for study of selected operations. Fluid products accounted for 87% of production, and frozen products and by-products were 10 and 3%. Mean water use was 1.9 kg/kg product for fluid products, 10.5 kg/kg product for by-products, and 15.7 kg/kg product for frozen products. Cleaning and sanitizing operations accounted for 38% and utilities for 30% of the total process water. The milk case washer used 6.6% of the total plant water. The peak times of water use were for start-up in the morning hours and for clean-up in the early afternoon. Water saving suggestions are presented.

¹ Paper No. 4828 of the Journal Series of North Carolina Agricultural Experiment Station, Raleigh.