Investigating the Amount of Water Consumption, Costs of Water Output and Lost Fibers in the Effluent Stream of an OCC Recycling Company in Iran

Abstract

Paper production is a process that consumes a lot of water, in this process the use of water should be carefully considered. Most of the industrialized countries have developed standards for the discharge of sewage or wastewater, the purpose of which is to ensure that the society does not have to bear the costs caused by the industrial use of water. Wastewater, after processing, should be returned in a suitable form for almost any type of purpose. The stricter standards have caused the complete closure of paper mill water systems (that is, bringing the amount of effluent to zero) to be emphasized more. In the discussion of recycling, the fibers should be separated from the wastewater due to their economic value and returned to the system. Therefore, in this research, in one of the OCC recycling factories, the amount of water consumption and effluent output and the amount of fibers in the effluent output of this factory before pre-treatment and after pre-treatment were investigated and it was observed that if the water intake is not controlled and If pre-treatment is not used, a significant amount of fibers will be thrown away along with the waste water, which is 8441 kg per 390.651 tons of production in one month based on TSS The basis of purchase price of OCC was done in the same period.