Conversion of pulp and paper mill waste solids to papermaking pulp

摘要: A process for the production of papermaking fiber or pulp from waste solids emanating and paper mills, particularly in water streams containing fibrous that cannot be directly recycled by mill "saveall" devices, conveyed sewerage system to wastewater treatment plant facilities, "sludge" underflow a primary clarifier sedimentation basin at facilities either before after is thickened dewatered. The said comprises defibering stage release individual fibers bundles, screening separate long debris short clay, centrifugal cleaning fiber, bleaching increase brightness dewatering remove excess pulp, clarification fiber-clay-debris effluent which substantially recycled, biological dissolved organic materials generated can discharged as water. produces same quality used producing solids.