Composite sludge dewatering treatment method and equipment thereof

Abstract

The invention discloses composite sludge dewatering treatment equipment, and belongs to the technical field of sludge dewatering. The equipment comprises a flocculation mechanism and a dehydration mechanism; the flocculation mechanism at least comprises a stirring part capable of moving up and down while rotating, and a fluid outlet; the dehydration mechanism at least comprises a fluid inlet; and the stirring part is arranged to move to the lowest position of the fluid outlet from bottom to top during stirring, so that the entrained and precipitated fluid flows into the fluid outlet from the fluid outlet. When the stirring part moves to the lowest point of the fluid outlet and the height of the sludge fluid in the flocculation box is higher than the lowest height of the fluid outlet, the sludge fluid carries large-particle bulk flocculate to flow into the dewatering mechanism. Compared with the prior art, the content of large-particle bulk flocculates in the sludge fluid flowing into the dewatering mechanism in unit time is increased, so that the sludge dewatering efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of sludge dewatering, and in particular relates to a compound sludge dehydration treatment method and equipment thereof. Background technique [0002] In the process of dehydrating the sludge produced in the paint sewage system, the field test shows that only one sludge flocculant is added, the flocculation effect is not very good, the sludge cannot be flocculated into agglomerates, and the particles are small; Add caustic soda to the mud to adjust the pH to alkaline, and then add flocculant. During the reaction, in order to speed up the flocculation, the stirring paddle will be used for stirring, and the sludge will form agglomerates to form large granular flocs. [0003] Although the flocculation effect has been improved, due to the larger floc particles, the large-grained aggregate flocs are not only affected by their own gravity, but also by the centrifugal force of the stirring paddle, so some large-gra...

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Problems solved by technology

[0003] Although the flocculation effect has been improved, due to the larger floc particles, the large-grained aggregate flocs are not only affected by their own gravity, but also by the centrifugal force of the stirring paddle, so some large-grained aggregate flocs are easy to settle, resulting in flocs It is not easy to flow into the screw stacker, so that the amount of dewatered sludge per unit time becomes smaller, reducing the sludge dewatering efficiency

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