Treatment of pulp and paper mill wastewater—a review

Purchase

D. Pokhrel and T. Viraraghavan^, 

Department of Environmental and System Engineering, Faculty of Engineering, University of Regina, 3737 Wascana Parkway, Regina, SK, Canada S4S 0A2

Received 2 July 2003;  

Revised 29 January 2004;  

accepted 7 May 2004.  

Available online 30 July 2004. 

Abstract

Pulp and paper mills generate varieties of pollutants depending upon the type of the pulping process. This paper is the state of the art review of treatability of the pulp and paper mill wastewater and performance of available treatment processes. A comparison of all treatment processes is presented. Combinations of anaerobic and aerobic treatment processes are found to be efficient in the removal of soluble biodegradable organic pollutants. Color can be removed effectively by fungal treatment, coagulation, chemical oxidation, and ozonation. Chlorinated phenolic compounds and adsorable organic halides (AOX) can be efficiently reduced by adsorption, ozonation and membrane filtration techniques.

Author Keywords: Pulp; Pulp and paper; Wastewater; Treatment