Cooling black water; Bleaching salt; Heating and cooling of alkaline solution; Heat recovery of glass paper waste liquid; Heating and steaming acid; Cooling sodium hydroxide aqueous solution; Recycling waste liquid from bleached paper; Condensation of exhaust gas; Preheat the waste liquid of concentrated pulp; Wastewater cooling; Cooling with cleaning water; Wastewater heat recovery; Wood pulp concentration.

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