The present invention consists of tow node, tow ring in the middle part and tow tail. The tow ring and the tow tail are made of monofilament tow of plant fiber, hydrophilic synthetic fiber and/or hydrophilic artificial fiber. The tow node is solid or porous plastic, ceramic, rubber or metal body. The present invention is used for separating various suspension in water, especially separating suspended impurities containing oil or grease. The present invention has the advantages of great specific surface area, high filtering bed elasticity, high filtering material strength, long service life, high solid/liquid separating efficiency, great dirt tolerance and good back flush effect with low water consumption. |