While a wide variety of useful products can be made from paper the transformation of wood, straw, bagasse, and other materials in the paper is a very complicated process that requires significant amounts of water and energy. For that reasons anaerobic treatment with renewable energy generation has long been a favoured method of treatment in the pulp and paper industry. Recycled paper, bleached paper, cardboard production and other paper mills will all generate waste streams with different compositions.They require proven and efficient technologies to effectively treat the high strength waste water generated in order to prevent environmental pollution and restrict the production plant operations.