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RECENT DEVELOPMENTS IN SOLID LIQUID SEPERATION TECHNOLOGY IN JAPAN
Kobayashi,Kazumasa,Shirato,Mompei,Iwata,Masashi 강원대학교 부설 창강제지 기술연구소 1998 제지기술 Vol.- No.12
There have been many contributions to the improvements and progresses in solid liquid separation technologies in Japan. Fundamental concepts for electro-osmotic dewatering, the design of the automatic recessed-plate-type filter press with both the membrane compression and the electroosmotic devices, and its actual performance will be discussed. The combination of mechanical compression and electroosmosis is effective in removing liquid from sludges for which conventional mechanical dewatering are not successful. Developments of fully automatic filter presses of the plateless-type and the plate-and-frame type, both are available at lower prices, will be introduced. A new centrifugal decanter-type thickener has attained an extremely lower power consumption by using the method of the axial discharge of bath the thickened sludge and separated liquid. A dynamic pulse type spray-dryer is developed basing upon dynamic expression by use of a new pulse combustion engine. A dehydrator with multi rotor-disks multi-axes is developed on a rather unique concept of deliquoring.