ABSTRACT
The wastes that result from food processing usually contain varying degrees of concentrations of organic matter. The wastes that result from food processing consist of the wash liquid; the solids from sorting, peeling, and coring operations; the spillage from filling and sealing machines; and the wash liquid from cleaning the facilities. Cannery wastes are most efficiently treated by screening, chemical precipitation, lagooning, and spray irrigation. When adequate land is available, lagooning may be the only practical and economical treatment of cannery wastes. Oxygen-demanding materials in cannery wastes can be removed by biological oxidation. However, in many instances cannery wastes can be combined with domestic sewage, and then, bio-oxidation processes provide a practical and economic solution. Dairy wastes are largely neutral or slightly alkaline but have a tendency to become acid quite rapidly because of the fermentation of milk sugar to lactic acid.
