FILTER MATERIAL FOR CLEANING LIQUID AND GASEOUS AGENTS, METHODS FOR MAKING SUCH MATERIAL, ARTICLES MADE FROM THIS MATERIALS AND DEVICE PRODUCED WITH THIS MATERIAL Russian patent published in 1998 - IPC

FIELD: cleaning waste water, exhaust gases, natural gases and potable water. SUBSTANCE: filtering device includes casing 11, bottom 16, cover with hole 14 and filter element 10 or 17 with filter material 2 in form of layer located in succession. Cover 13 is detachable. Clearance is provided between walls of filter element 10 and casing 11. Cover 13 is tightly communicated with casing 11 and housing of filter element 10. Filter material 2 is made from carbon activated porous fibers, 4 to 10 mcm in diameter at specific surface of 590 to 2250 sq.m/g and volume of sorption pores of 0.63 to 1.83 cu. cm/g; surface of fibers is coated with silicon dioxide film. Filtering device may be additionally provided with prefilter made from natural or synthetic fibers or nonwoven materials. It may be located in checker outside or inside casing 11. According to one version, filter element 10 may be provided with perforated end walls 5 and 6 with layers of filter material 2 located in parallel relative to walls 5 and 6. Cover 13 and bottom 16 are made in form of truncated cone; bottom 16 has hole 15 for discharge of purified water. According to other version, filter element 17 may be additionally provided with inner perforated tube 7 fitted with blank 20 from below. Upper end of tube 7 is hermetically connected with hole 14 in cover 13. Tube 7 is coaxial relative to side walls of casing 11 and filter element 10. Side walls of filter element 10 are perforated; layers of filter material 2 are wound around inner tube 7 forming a roll. Prefilter 19 is made in form of sleeve located coaxially between side walls of casing 11 and filter element 10. EFFECT: enhanced efficiency. 25 cl, 4 dwg , 3 tbl