The paper industry is a closely related industry and the national economy, but also a consumption of energy and chemical raw materials, high water consumption, industry of serious environmental pollution, the emissions of paper industry wastewater, wastewater contains large amounts of celluloselignin, inorganic alkali and tannins, resins, proteins, etc. wastewater by depth, alkalinity, refractory material content, aerobic capacity, can cause serious damage of the entire body of water pollution and the ecological environment, paperwastewater treatment are urgently needed. China's paper industry is seriously polluted, according to statistics, China's paper industry wastewater discharges from the national accounts of industrial wastewater emissions of 20% to 30%. Accumulated a wealth of practical experience in the paper sewage treatment works, the production of papermaking wastewater treatment equipment with the advantages of high efficiency, low cost, less secondary pollutant, has been widely used in papermaking wastewater treatment.