Chuetsu Pulp & Paper's Futatsuka Mill is located in the southern part of Takaoka City. Toyama Prefecture, rather peaceful area on the western side of the Shou River surrounded by the green farmlands where theJpaneseAlps can be seen far away. Its main product being newsprint. The mill also produces printing paper, book paper, medium quality paper and bleached paper. The two paper machines, one 3,800 mm wide and the other 7,300 mm. together produce 190,000 tons of paper a year. 250 tons of TMP (thermo-mechanical pulp) and 360 tons of DIP (deinked pulp) are produced per day. KP (kraft pulp) is brought from Noumachi Mill in slush and lap. Some imported mechanikal pulps is also mixed depending on the paper grades. We have two boilers and a steam turbin that generates 85% of the mill's required electricity. We have continued to reinforce our environmental protection facility in accordance with the transitions of the production facilities. As for our activated sludge operation, when environmental matters became an issue in 1973, we built three 75 kW surface aeration systems to dispose 6,400 kg per day of highly concentrated BOD effluent from the former CGP (chemical groundwood pulp) production system. Later the CGP system was replaced with the TMP system and the DIP system was installed. The production increased yearly which lead to the instability of the activated sludge operation. The Saturn and the Sun Jetter was installed to cope with this problem. We would like to particularly focus on the operations of Saturn hereinafter.
