Advance oxidation of high strength wastewaters as a suppleme~tary treatment option for enhanced biological treatment

Abstract

High organic strength wastewaters from food industry, distilleries, breweries etc. are conventionally treated by anaerobic digestion due to low sludge production, derivation of biogas and low operating costs. However anaerobic process is extremely slow and hence requires large space and therefore capital cost intensive. On the other hand, aerobic treatment is rapid, efficient with stable end products yet the considerable sludge formation is a major disadvantage. Chemical oxidation is extremely rapid, easy to control and able to oxidize non bio degradable substances but its widespread application is restricted primarily due to cost consideration. Therefore an integrated approach to high strength wastewater treatment by taking advantage of the merits of anaerobic, aerobic and chemical oxidation is an attractive option to develop a sustainable, efficient, intensive and rapid treatment technology for the treatment of high strength industrial effluents.