TREATMENT OF WASTE-WATER FROM THE POTATO-CHIPS AND SNACKS MANUFACTURING-INDUSTRY

A small industrial effluent treatment plant has been designed and inst alled for the treatment of wastewater from a potato chips and snacks f actory. The total daily flow rate to the plant was 115 m(3)/d, while t he influent COD mass flux was 838.7 kg/d and the BOD mass flux was 626 .7 kg/d. The applied method of treatment is a simple upflow anaerobic reactor with internal settling and gas collection units, followed by a erobic treatment based on the activated sludge process with diffused a ir system. The quality of the treated water is better than requested a nd the overall treatment process efficiencies are 99.2% for COD remova l and 99.5% for BOD5 removal. The results of the operation of the plan t during the first five months are examined and described in this pape r. (C) 1997 IAWQ. Published by Elsevier Science Ltd.