Building sewage treatment equipment using advanced biological treatment processes, set to remove BOD5, COD, NH3-N in one, with a stable and reliable technical performance, good effect, investment, small footprint, and easy maintenance. Device buried in the ground below the equipment above the surface can be used as green or other land, no housing and heating, insulation. Two biological connection. Contact oxidation process are used plug-flow biological contact oxidation treatment is better than full hybrid or two series completely mixed biological contact oxidation pond. And activated sludge small, strong adaptability to water quality, good resistance to shock loading performance, water quality and stability, does not produce sludge bulking. Pool using the new three-dimensional elastic filler, large surface area, easy to hang microbial membrane stripping, under the same conditions of organic load, high removal efficiency of organic matter, oxygen in the air can increase the solubility in water. Biochemistry biological contact oxidation pond volume filler loading its relatively low microbial oxidation stage in itself, producing less sludge, only three months (90 days) more than a row of mud (with a truck pumping into the mud or dehydration cake Sinotrans). Deodorant way buried sewage treatment equipment in addition to conventional high-altitude exhaust, comes with soil deodorizing action. The entire device is equipped with automatic handling system electrical control systems and equipment failure alarm system, safe and reliable operation, usually does not require special management, just in a timely manner for equipment maintenance and repair. www.yuanbao2.com integrated wastewater treatment equipment, buried integrated wastewater treatment equipment