ABSTRACT
Wastewater treatment is one of the major challenges in developing countries. The majority of the industries disposes the effluent in the naturalstreams and adjoining water bodies. Among those industries, pulp, and paper mills cause the major degradation of water bodies through their effluents containing organic compounds like lignocellulosic material as well as chemicals like chlorinated compounds and other acids. This paper mill industry is mainly chosen because of the enormous amount of water required as well as it has certain benefits of producing a potential source of biogas using wastewater. To degrade the sludge decomposition from the waste, anaerobic biovalorization treatment is generally used because of the high loading rate and can produce energy using biomass. The complete illustration regarding anaerobic treatment, enhancement strategies to improve the anaerobic treatment, production of the value-added products through this treatment were briefly discussed. Therefore, the anaerobic treatment plays a major role in not only generating biogas but also trans- forming the sludge into useful material by adding it as a fertilizer, as well as producing chemicals, etc.
