Overview of the extent of farmers living in rural areas to focus less urban, urban sewage generated intensity below, Village financially weak, the low income of farmers should be encouraged to adopt economic, simple, and effective as possible with a combination of local agricultural production and diversification of sewage treatment technology achieve safe disposal of sewage and resource utilization. Integrated wastewater treatment equipment buried power process technology integration process can be divided by biological contact oxidation, SBR, A / O and A2 / O and so on. Common A / O processing technology principle is that in anoxic microbial nitrogen pool will * salt and sodium salt of N * Restore sewage into gaseous nitrogen to escape, while the decomposition of biodegradable organic molecules into small molecules easily degradable substances with denitrification, partial hydrolysis and degradation of organic matter in the role; aerobic pool, most organics are microbial treatment and mud into the secondary sedimentation tank for separation, discharge disinfected after A / O process in the degradation of organic matter while denitrification. so greatly reduced oxygen demand, is energy-efficient biological treatment technology. In order to maintain a high nitrification rate, response duration longer than conventional activated sludge process, better sludge settling properties, sludge growth rate is low, less residual sludge settlement performance. Works Series sewage treatment equipment to remove organic pollutants and ammonia depends on the device AO biological treatment process. Which works at A-level, due to the high concentrations of organic wastewater, microbes in a hypoxic state, then microbes and micro-organisms, so the A-class pool not only has a certain organics removal function, reduce subsequent aerobic tank organic load, reduce the concentration of organic matter, but there is still a certain amount of organic matter and higher NH3-N exists. In order to further oxidation and decomposition of organic matter, while in the carbonation nitrification can be carried out smoothly, set a lower organic load of aerobic biological contact oxidation pond at O-level. O level in the pool exists primarily aerobic microorganisms and bacteria from oxygen (nitrifying bacteria). Which aerobic microbial decomposition of organic matter into CO2 and H2O; autotrophic bacteria (nitrifying bacteria) or the use of inorganic carbon produced by decomposition of organic matter in the air of CO2 as a nutrient source, the sewage NH3-N into NO-2-N , NO-3-N, O-level pool water back into the A-level pool, providing electronic acceptor for the A-level pool, through denitrification eventually eliminate nitrogen pollution. FEATURES 1, set processing BOD5, COD, NH3-N, fecal coliform, PH 2 in one, the entire device can be buried in the ground, not an area of ??the surface area; 3, the voice sound produced is low, less odor, the surrounding environment 4 small impact, high degree of purification, the entire system produce less sludge; 5, the high degree of automation, easy to manage, no special management; 6, technical stability, easy maintenance 7, low energy consumption, save operating costs www.yuanbao2. com integrated wastewater treatment equipment, buried integrated wastewater treatment equipment