Stirring tank for wastewater treatment

The invention discloses a stirring tank for wastewater treatment. The stirring tank comprises a stirring tank body, wherein a wastewater treatment pond with an upward opening is arranged in the stirring tank body, a transverse mounting plate is mounted on the upper end face of the stirring tank body, a supporting rod is rotationally arranged between the lower end face of the mounting plate and the lower wall of the wastewater treatment pond, a threaded groove is formed in the outer circle face of the supporting rod, and a lifting rotary plate capable of moving up and down is arranged in the wastewater treatment pond. According to the invention, the lifting rotary plate rotates and drives a stirring connecting rod to rotate, then the stirring connecting rod is driven to move up and down and rotate at the same time, and at the moment, the stirring connecting rod rotates and fully stirs wastewater in the wastewater treatment pond, so wastewater treatment effect is improved; and meanwhile, the input amount of a w