Effluent Mininization and Air Emission Compliance in the Fully Integrated Kraft Pulp Mill, 1997 Environmental Conference Proceedings

A persistent belief in the kraft pulping industry is that the concept of the minimum effluent mill and air emission compliance are mutually exclusive. The fallacy concludes that air emissions will increase as the mill effluent system is progressively closed. Incorporation of state-of-the-art air emission control technology and technology for minimum mill effluent generation can yield the optimum mill operation in the older, integrated facility. This paper demonstrates a cost effective approach to effluent reduction and air emission compliance an older, fully integrated 1,364 metric ton per day bleached kraft pulp mill and paper mill, including process chemical facilities. Design considerations include technologies for minimum water consumption and effluent generation. Technologies for air emission control include particulates, reduced sulfur compounds, sulfur dioxide, nitrogen oxides, methanol, and hydrocarbons.

Technical evaluations include capital costs, operating and maintenance costs, and environmental benefits.