Low-energy-consumption easy-to-maintain small rural sewage treatment device in alpine region

The invention discloses a low-energy-consumption easy-to-maintain small rural sewage treatment device for an alpine region. The device comprises a water inlet adjusting unit, a reaction treatment unit and a water drainage unit, the water inlet adjusting unit is used for hydrolyzing and acidifying pollutants with relatively large molecular weight in the sewage filtered by the grid into pollutants with relatively small molecular weight; the reaction treatment unit is used for removing pollutants in the sewage fed by the water inlet adjusting unit; and the drainage unit is used for discharging the sewage treated by the reaction treatment unit into surrounding soil. According to the present invention, the energy consumption is extremely low, compared with the existing scheme, the aeration fan is not provided, the reoxygenation can be achieved through the natural pressure difference, the aerobic and anaerobic alternation function is provided, and the COD, ammonia nitrogen and other pollutants in the sewage can be