The suspension was filtered residue layer has a filtration, depth filtration and sieving three kinds of ways. ① residue layer filtering: initial filtration filter media entrapping large solid particles only, with the small particles of the filtrate through the filter medium. After an initial residue layer filter, the filter residue layer plays a major role, then large and small particles are trapped, such as plate and frame filter press filter. ② depth filtration: filtration media thicker, the suspension containing small solid particles, and the particles are smaller than the filter media pores. Filtration, after being adsorbed on the particles into the pores, such as porous plastic tube filter, sand filter filtration. ③ sieve: filtration of solid particles trapped in the pores are larger than the filter media, filter media does not adsorb inside solid particles, such as a drum filter screen filtered sewage coarse impurities. In the actual process of Shanxi automatic filter cleaning filters, three ways are often simultaneously or one after another. Shanxi Run-Environmental Engineering Limited was founded in 2005, is a professional sewage treatment, waste gas treatment, dust handling and other environmental projects and research and design of high-tech enterprises. Self-cleaning filter Shanxi sewage filter, operation and control without any external energy can be self-cleaning filter, automatic sewage. Continuous flow during backwash, cleaning filtration cycle can be adjusted, self-cleaning filter time defaults to 10-60 / s, the loss of water to clean the filter only 0.08-0.6% of the water filter; filtration precision up to 10-3000 microns; working pressure up 1.0-1.6Mpa; single flow: 4-4160m / h. Can be installed vertical, horizontal, inverted in any direction at any position, can be used in industrial, agricultural, municipal electricity, electronics, medicine, food, printing and dyeing, construction, steel, metallurgy, paper and other industries water filtration. Adhering rescued from dangerous work environment! Specializes in the circulating water treatment equipment R & D, manufacturing modern high-tech enterprises. Self-cleaning filter water treatment industry adopt international advanced technology equipment, is committed to the water supply system, circulating water systems, sewage systems and water systems equipment design, manufacturing, equipment, commissioning and service. Shanxi water filters, filters, Shanxi, Shanxi Runtong environmental protection provided by the Run-Environmental Engineering Limited. Run-Environmental Engineering Co., Ltd., Shanxi (www.sxruntong.com) strong, credible, in Taiyuan, Shanxi sewage treatment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Runtong into the brilliant green and you work for a better future!