Equipment for ultrasonically disintegrating municipal sludge to reduce water content of sludge

Abstract

The invention discloses equipment for ultrasonically disintegrating municipal sludge to reduce the water content of the sludge. The equipment mainly comprises a treatment tank, a treatment mechanism and a buffer mechanism, wherein the treatment tank comprises a sludge inlet and a sludge outlet, and a microbubble generation mechanism is arranged at the sludge inlet; the microbubble generation mechanism comprises gas inlets, a gas outlet pipe, a driving gear and a cutting disc arranged in the gas outlet pipe, and a plurality of the gas inlets are formed in the cutting disc and the driving gear;the treatment mechanism comprises a driving ring, a plurality of driving columns and a treatment column; and the treatment column comprises a bearing, an ultrasonic generator, stirring fan blades andan extrusion head. According to the invention, molecular walls in the sludge are broken through the ultrasonic generator in the treatment column, so water in the sludge is removed more deeply; treatment efficiency is improved through cooperation of telescopic stirring of the treatment column and an aeration device; and the equipment is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to equipment for ultrasonically cracking municipal sludge and reducing the moisture content of sludge. Background technique [0002] With the rapid development of industry and the continuous increase of urban population, the discharge of urban sewage has increased unprecedentedly. At present, the number of urban sewage treatment plants in my country has exceeded 2,000, and a large amount of municipal sludge will be generated during the operation of the sewage treatment process. The amount of these municipal sludge is astonishing. It has a high moisture content, is bulky, perishable, has a foul smell, and contains a large amount of toxic and harmful substances such as heavy metals and germs. If it is not treated scientifically, it will be directly discharged into the external environment. It will cause great pollution to surface water, soil, groundwater and air, and cause a...

AI Technical Summary

Problems solved by technology

The amount of these municipal sludge is astonishing. It has a high moisture content, is bulky, perishable, has a foul smell, and contains a large amount of toxic and harmful substances such as heavy metals and germs. If it is not treated scientifically, it will be directly discharged into the external environment. It will cause great pollution to surface water, soil, groundwater and air, and cause adverse effects on human health.

[0003] The existing deep dehydration technology for sludge dehydration to 50% water content in sewage treatment plants is mainly chemical conditioning + dehydration by pressure filtration or adding conditioning agent + dehydration by pressure filtration. The main problems of this technical method are: 1. Mainly separate sludge It is difficult to remove the interstitial water and capillary water in the sludge, and the crystal water in the microbial cells of the sludge, and it is difficult to further reduce the moisture content of the sludge after it is reduced to 50%; 2. It is necessary to add a large amount of chemical conditioning agents, which will affect the biochemical properties of the sludge 3. The cost of sludge conditioner is high, and the cost of sludge disposal in sewage treatment plants is under great pressure

[0005] But so far, the work in this area in our country is very limited, and most of them are research topics of universities and scientific research institutes. The engineering research is also limited to the analysis of the effect of sound energy density and action time on sludge reduction, and the project field has not been completed. application

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