B - Operations – Transporting – 41 – N
Patent
B - Operations, Transporting
41
N
B41N 3/08 (2006.01) B41F 7/24 (2006.01) C02F 1/28 (2006.01)
Patent
CA 2325942
Provided are a circulation treatment system and method for a fountain solution for reducing the amounts of a BOD, COD, n-hexane concentration and SS in the fountain solution to recycle the fountain solution without draining off. Circulation passages 9a to 9d are connected to a vessel 12 of a dampening section 11 of an offset rotary press via communication passages 10a and 10b, and circulate a fountain solution by introducing the fountain solution in the vessel 12 from an introducing port 8a and discharging the fountain solution from a discharging port 8b. In the course of the passage 9a to 9d, arranged are a line pump 4 for forcibly circulating the fountain solution, a potential absorption filtering device 2 using an absorbing effect of a zeta potential, and an activated carbon filtering device 3 using an absorbing effect of activated carbon in this order. Fine particles of ink, paper, oil or the like contained in the fountain solution are first absorbed and removed by the potential absorption filtering device 2, and then the fountain solution is decolorized and deodorized by the activated carbon filtering device 3.
G. Ronald Bell & Associates
S.t. Engineering Co. Ltd.
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