Treatment of Wastewater from Pulp and Paper Industry – Special Reference to Aerated Lagoon

Abstract

Pulp and Paper industry in India has made tremendous strides during the last 60 years and is one of the largest industry in India. Most of the industries, with a few exceptions, are integrated Pulp and Paper mills using Kraft or Sulphate process of pulping. The water consumption and consequently waste water discharge is enormous in Pulp and Paper industry and accordingly pose serious problems on the receptor environment. This warrants adequate treatment of wastewater including recycling of treated wastewater to reduce overall pollution load on the environment. Though there are various treatment technologies available to treat the wastewater from Pulp and Paper industry but the authors in the present paper have adopted and designed Aerated Lagoon along with pre and post treatment systems.