Dr. James N. Dornbush* Dwayne A. Rollag* William J. Trygstad** INTRODUCTION Various methods of treating potato processing wastes have been utilized during the past years, however, very limited data are available in the 1 iterature demonstrating the effectiveness of an anaerobicaerobic la oon system for treating these wastes. Midwest Foods Corporation 4 formerly Fairfield Products, Incorporated) of Clark, South Dakota, presently utilizes such a system to treat the waste water generated from the production of frozen French-fried potatoes. The following discussion provides a case hi story of the successes and failures of the system. When the potato processing plant was constructed prior to the 1970- 71 season, relatively little consideration was given to design and operation of the waste handling system. The waste water treatment facilities consisted of a screen and 25-acre stabilization pond. After the initial operating season in 1970-71, numerous complaints regarding offensive odors from the system were received by company and state authorities. Data obtained in June 1971 revealed that the stabilization pond was severely over1 oaded. The five-day biochemical oxygen demand (BOD5) of the liquid contents was 1180 milligrams per liter. Acting upon the complaints, state authorities directed the company to construct facilities capable of satisfactorily treating the wastes prior to the 1971-72 processing season. Makalenin tamamına ekten ulaşabilirsiniz.