Sewage treatment which can be divided according to their role in accordance with its three sewage treatment effect can be divided into three physical, biological and chemical methods. ① Physical Method: The main advantage of the physical effects of the non-separated effluent dissolved substances in the process does not change the chemical nature. Commonly used gravity separation, centrifugal separation, reverse osmosis, flotation and the like. Treatment of physical structures is relatively simple, economical wastewater treatment equipment for the village water capacity, strong self-purification capacity, degree of sewage treatment less demanding situations. ② biological methods: the use of microbial metabolism, the sewage was dissolved or colloidal state of decomposition of organic matter is oxidized to stable inorganic substances, sewage purification. Commonly used activated sludge and biofilm. Biological treatment level is higher than the physical law. ③ chemical method: is the use of a chemical reaction or action to deal with recovery of dissolved substances or colloidal substances methods of sewage, used for industrial wastewater. Commonly used Coagulation, neutralization, oxidation-reduction, ion exchange method. Chemical treatment treatment effect, high cost, and more as the water after biochemical treatment, further treatment to improve water quality. The process is characterized by an early integration equipment is "small paper mill wastewater treatment equipment, complete", seemed more bloated. With the application and development of the integration of the device, the process continues to be the improvement of industrial wastewater treatment equipment and become more compact and improve the processing efficiency. The process of improving the main focus on improving efficiency, reduce the area and reduce energy consumption. Improved process mainly includes three aspects: the acidification tank instead of the original primary settling tank and sludge tank, acidification tank and adjusting tank can be inverted. Less sludge production equipment integration, sedimentation tanks (filtration pool) of the sludge can be returned to the acidification of the pool. The role of acidification tank includes three aspects: First, the sewage organic molecules through hydrolysis acidification can be broken down into small organic molecules, improve biodegradability; biochemical pool residence time can be reduced to about 3h; acidification can also be set in the pool packing sewage treatment works to increase the concentration of acidifying bacteria; Second, return sludge concentration can enhance microbial acidification tank, but also has some biological function flocculation, flocculation and sedimentation preliminary partial suspension or colloidal contaminants and reduce subsequent biochemical pool load; Third, return sludge under its own weight hydraulic compression while acidification sludge digestion tank can get some further reduce sludge volume; sludge acidification general pool regularly (1 year) aspiration. Acidification tank, primary settling tank and sludge tank Trinity, which greatly reduces the footprint, improve the processing efficiency. Sewage treatment equipment, Xinzhou sewage treatment equipment, environmental protection provided by the Run-Run-Environmental Engineering Co., Ltd., Shanxi. 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!