TREATMENT OF THE PAPER MILL EFFLUENT - A REVIEW.

The disposal of untreated paper mill effluent is a major environmental concern today. The purpose of this paper is to highlight the available treatment units for the paper mill effluent and to recommend a possible best option for the developing nations, like Pakistan. Various physciochemicals, anaerobic, aerobic, combination of different treatment units have been evaluated, on the basis of their treatability performance, especially in terms of COD, BOD and AOX removal efficiency. It is concluded that the physcio-chemical and aerobic processes are uneconomical and impracticable, owing to their high operational cost. Whereas, the anaerobic processes seem to be more reliable, simple and feasible for the developing world, both in terms of pollution reduction and low operational costs. [ABSTRACT FROM AUTHOR]