Passivation treatment device for heavy metal in municipal sludge

Abstract

The invention discloses a passivation treatment device for heavy metal in municipal sludge, belonging to the technical field of sludge treatment equipment. The passivation treatment device for heavy metal in municipal sludge comprises a treatment box, wherein a motor is fixedly arranged on the top face of the treatment box, the output end of the motor penetrates through the top face of the treatment box, extends into the treatment box and is connected with a transmission rod, the outer wall of the transmission rod is sleeved with a movable plate, the lower end of the transmission rod is connected with a wall scraping assembly, and a plurality of supporting legs in an annular structure are welded on the bottom surface of the treatment box. By arranging a mixing assembly, the motor is used for driving the transmission rod to rotate; a guide groove is formed in the transmission rod, and when the transmission rod rotates, a movable plate connected with the guide rod is driven by the guide groove to rotate, but the movable plate is limited by a limiting rod, so a connected rotating shaft is driven to move up and down; and thus, a stirring net plate connected with the rotating shaft moves up and down, the sludge is mixed and stirred, non-uniform stirring caused by repeated stirring at one place is avoided, and the sludge and a passivator are better mixed.

Description

technical field [0001] The invention relates to the technical field of sludge treatment equipment, and more specifically relates to a passivation treatment device for heavy metals in municipal sludge. Background technique [0002] Municipal sludge is the sludge generated during the operation and maintenance of urban life and urban municipal facilities related to urban life activities. The sludge generated during sewage treatment contains a large amount of harmful heavy metals. It needs to be treated and discharged during treatment and discharge. It removes, needs to add passivating agent in sludge, makes heavy metal carry out passivation treatment, in prior art CN211946728U a kind of urban sludge heavy metal passivation treatment device, but this device also has weak point and is: 1, this The device is only stirred by the stirring frame, resulting in insufficient stirring effect; 2. Since the sludge is different from water, it is mixed quickly, and the sludge has a large vis...

AI Technical Summary

Problems solved by technology

[0002] Municipal sludge is the sludge generated during the operation and maintenance of urban life and urban municipal facilities related to urban life activities. The sludge generated during sewage treatment contains a large amount of harmful heavy metals. It needs to be treated and discharged during treatment and discharge. It removes, needs to add passivating agent in sludge, makes heavy metal carry out passivation treatment, in prior art CN211946728U a kind of urban sludge heavy metal passivation treatment device, but this device also has weak point and is: 1, this The device is only stirred by the stirring frame, resulting in insufficient stirring effect; 2. Since the sludge is different from water, it is mixed quickly, and the sludge has a large viscosity and poor fluidity, so that when a single stirring frame is stirred, Insufficient mixing of the sludge and the passivating agent results in a poor passivation treatment effect; 3. Due to the strong adhesion of the sludge, it will adhere to the inner wall of the treatment box, and the device is not convenient to remove the sludge attached to the inner wall. The mud is scraped off, resulting in a further reduction in the passivation effect. In view of this, we propose a passivation treatment device for heavy metals in municipal sludge

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