Municipal sludge drying treatment system

Abstract

The invention provides a municipal sludge drying treatment system, and relates to the technical field of sludge treatment. The municipal sludge drying treatment system comprises flue gas heat exchangeequipment, wet material storage and conveying equipment, a sludge drying machine and dry material storage and conveying equipment, waste heat in industrial flue gas is recycled through the flue gas heat exchange equipment, and heat is transferred to the sludge drying machine, the sludge drying machine utilizes the heat to dry municipal sludge, the dried municipal sludge is conveyed to the dry material storage and conveying equipment to be stored, drying operation is carried out through waste heat in industrial flue gas, energy is recycled, energy is saved, meanwhile, the content of harmful organisms in soil can be reduced in the drying process, the moisture content of the dried municipal sludge is greatly reduced, the size of the dried municipal sludge is greatly reduced, reduction and harmlessness are achieved, in addition, the dried sludge is convenient to transport and store and good in heat value and soil texture, the dried sludge can be used as fuel, fertilizer and the like to bereused, and recycling of the municipal sludge is achieved.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a municipal sludge drying treatment system. Background technique [0002] For the municipal sludge generated in the city, the current conventional treatment method is "mechanical dehydration + centralized landfill", that is, after the municipal sludge is simply mechanically drained, it is transported to the designated place by the sewage truck for landfill. Unable to fully dehydrate (the water content is as high as 80%), resulting in a large volume of municipal sludge and low transportation efficiency. At the same time, a large number of microorganisms, germs, and insect eggs contained in municipal sludge will have an impact on the environment when it is directly landfilled. In addition, municipal sludge has a high calorific value and good soil quality, so direct landfilling will cause waste of resources. Contents of the invention [0003] The purpose of the present i...

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Problems solved by technology

[0002] For the municipal sludge generated in the city, the current conventional treatment method is "mechanical dehydration + centralized landfill", that is, after the municipal sludge is simply mechanically drained, it is transported to the designated place by the sewage truck for landfill. Unable to fully dehydrate (the water content is as high as 80%), resulting in a large volume of municipal sludge and low transportation efficiency. At the same time, a large number of microorganisms, germs, and insect eggs contained in municipal sludge will have an impact on the environment when it is directly landfilled. In addition, municipal sludge has a high calorific value and good soil quality, so direct landfilling will cause waste of resources

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