Burning Pulp-Mill Waste From Sulphite Mill

Abstract After first outlining the problem of stream pollution, as applied to sulphite pulp mills, this paper describes the recovery of lignin from digester waste and the elimination of stream pollution by the Howard process. This process produces a lignin fuel which can be and is burned in power-plant furnaces for the production of steam. Mechanical problems, such as the development of a filter press and various methods of burning the fuel so produced, are explained.