Tail water treatment comprehensive pool

The utility model discloses a comprehensive tail water treatment tank which comprises a filter tank, the filtering structure is fixedly arranged on the upper wall surface of the filtering tank and is positioned at the central part; the tail water treatment device relates to the technical field of tail water treatment, the threaded rod drives the first filter plate to ascend by starting the motor, after the upper wall surface of the first filter plate is flush with the upper wall surface of the filter tank, the tail water can be conveniently cleaned, the filtered tail water enters the reaction tank, and the tail water can be recycled. Nitrogen and phosphorus in the tail water are removed by adding the compound alkali into the tail water, reacted precipitates are filtered through the second filter plate, the filtered precipitates are stored in the water storage tank for secondary utilization, and the device is simple to use, convenient to clean and high in purification effect, effectively utilizes the tail wate