ANAEROBIC-AEROBIC TREATMENT OF CHEESE WASTE-WATER WITH NATIONAL TECHNOLOGY IN MEXICO - THE CASE OF EL SAUZ

A low cost treatment alternative for cheese wastewater is discussed. T he problem was to redesign three ponds which were operating below the consents. Discharge rate is 500 m(3)/day with a high organic load (2,7 50 kg COD/day). The new system consisted of: a grease trap, an anaerob ic UASB type pond, an aerated pond and an effluent polishing pond with water hyacinth. Local technology was used except for the aeration equ ipment. The project was done at a low capital investment (US$ 330,000) and operational costs (US$ 0.55/m(3)) which were competitive with cur rent marker prices but within the official environmental consents. Cop yright (C) 1996 IAWQ. Published by Elsevier Science Ltd.