Novel sludge drying processing device

Abstract

The invention discloses a novel sludge drying processing device, and belongs to the technical field of environmental protection equipment. The novel sludge drying processing device comprises a feeding machine, an air blower, an air heater, a diffuser, air flow dryers, a cyclone dryer, a cyclone separator, a dust remover, and an induced draft fan; air is heated by the air heater to a temperature higher than 100 DEG C, is delivered into the diffuser, and is mixed with dewatered sludge so as to obtain a hot air sludge flow, wherein water content of the dewatered sludge is controlled to be 80%, and the dewatered sludge is delivered into the diffuser via the feeding machine, and is smashed using the diffuser; sludge in the hot air sludge flow is dried using the air flow dryers and the cyclone dryer, dried air sludge flow is delivered into the cyclone separator so as to obtain dried sludge with a water content less than 5% via separation; hot air and dried sludge dust are delivered into the dust remover; and dried sludge dust is discharged via the bottom of the dust remover. The novel sludge drying processing device is used for processing sludge using a man-made heat source, deep dewatering is realized, thermal treatment effect is achieved, the activity of microorganisms in sludge are inhibited, and the obtained dried sludge can be taken as fertilizers, building materials, and the like.

Description

technical field [0001] The invention relates to a novel sludge drying treatment device, which belongs to the technical field of environmental protection equipment. Background technique [0002] At present, sludge mechanical dehydration uses porous material as the filter medium, and the pressure difference on both sides of the filter medium is used as the driving force. The water in the sludge is forced to pass through the filter medium and is discharged in the form of filtrate, and the solid particles are trapped in the filter medium. On the filter medium, it becomes a dehydrated filter cake (mud cake), thereby realizing sludge dehydration. There are three commonly used methods for mechanical sludge dehydration: (1) aeration and dehydration methods that use pressure or vacuum to remove the moisture in the sludge with air or steam, and vacuum filtration is more common; (2) rely on mechanical compression The pressure filtration method of action, generally adopts the filter pr...

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Problems solved by technology

[0003] The moisture content of the sludge after dehydration in most domestic sewage treatment plants is about 80%, that is, the sludge dehydration is not complete, the sludge volume is large, and it cannot be directly used as a resource, which brings great difficulties to the final disposal of sludge

[0004] Sludge drying is a method of deep dehydration of sludge using artificial heat sources and industrial equipment. Although the direct result of sludge drying is the decrease of sludge moisture content, compared with mechanical dehydration, its application purpose and effect are very different. big difference

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