Abstract
At Yufutsu Mill. we produce 300 thousand tons of newsprint, fine paper, coated paper and cup paper each year by pulp plants (KP. TMP and DIP) and 5 paper machines. Wastewater from each process is discharged after purified at clarifier. In 2000, wastewater sludge was 7, 600 BDt per year. We started Refused Derived Fuel (RDF) production plant up in October 2000 to reduce the waste and use wastewater sludge effectively. Wastewater sludge has not been used as fuel because of its low low-heating value. We succeeded to make RDF from wastewater sludge to mix with wood chip made from waste pallet and waste core. This RDF is used for coal circulating fluid bed boiler as fuel. Hence it made possible to produce electricity from waste and steeply reduced wastewater sludge disposed of at landfill sites. This paper describes about an outline of our Refused Sludge Fuel System.
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