Stepwise function-reinforced biological ecological oxidation pond

The utility model discloses a stepwise function-reinforced biological ecological oxidation pond, including the peripheral bank slope and an oxidation pond; the peripheral bank slope is paved by the ecological concrete prefabricated balls; the water plants are planted on the bank slope; a soft enclosure partition wall for water resistance and diversion is disposed in the oxidation pond; and the soft enclosure partition wall divides the oxidation pond into three function areas in turn, including a facultative aerobe pond, an aerobic pond and a water plant pond. In the utility model, the functional sub-area of the biological ecological oxidation pond is specially designed for the function construction according to the water purification requirement; the system can efficiently eliminate the soluble organic substances, the nitrogen and phosphorus nutrient salts and the suspension solids in the water and realize the deep purification of the tail water in the sewage treatment factory; and the tail water after treatment meets the first level A drainage standard in the whole year.