Sludge squeezing dehydration device

Abstract

The invention discloses a sludge squeezing dehydration device which comprises sludge sedimentation, sludge squeezing, back flushing sediment discharge and filter plate cleaning. A sediment cone funnel is arranged at the lower part of a waste liquid storage tank; the sludge slurry discharged by the backwashing of a filter device settles in the waste liquid storage tank and then is discharged to a squeezer; a sintering filter plate is arranged on a squeezing filter plate at the bottom of the squeezer; through extrusion of compressed air, the liquid is recycled by the sintering filter plate, and the dry sludge is attached to the upper surface of the sintering filter plate; a squeezing bottom plate is opened through an air cylinder or a hydraulic cylinder, and the dry sludge is back-flushed by the compressed air for sediment discharge; after the back flushing, the sintering filter plate is cleaned twice by clean water or clean liquid. The device has the advantages that physicochemical characteristics such as properties, concentration and the like of a chemical solution are not changed, the cleaning effect of the filter plate is good, the squeezed chemical solution is recycled completely, the sludge is recycled in a dry sediment form, and environmental pollution is avoided; meanwhile, without a transmission component, the device realizes low energy consumption and low fault rate and has the advantages of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to an industrial sewage treatment device, in particular to a sludge squeezing and dehydrating device in a chemical solution. Background technique [0002] In modern large-scale industrial production, sewage from various chemical solutions such as chemical industry, pharmaceuticals, metal acid and alkali washing, electroplating, metallurgy, etc., contains various metal ions or molecules, and other metal salts and compounds will be produced in the long-term production process. Thus affecting the stability of the chemical solution and the quality of the product, these harmful substances must be removed. However, the particles of these metal salts and compounds are very small, often only a few microns, and the fine particles are often the most expensive part of the filtered material. . If the waste liquid with fine particles is discharged directly, it will not only waste resources, but also pollute the environment. These are contrar...

AI Technical Summary

Problems solved by technology

At present, the filtration of chemical solutions in industrial production usually adopts millimeter-scale filtration, microfiltration, ultrafiltration and other filtration methods. The filtered clear liquid is returned to industrial production for reuse, and the sludge mixed with precious metals is mixed with chemical liquid after backwashing. Discharge to the sewage treatment plant for harmless treatment, which increases the treatment cost of the sewage treatment plant, and some are directly discharged, which greatly wastes resources and causes great pollution to the environment

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