Direct air-intake sludge drying apparatus and method thereof

Abstract

The invention provides a direct air-intake sludge drying apparatus. The direct air-intake sludge drying apparatus comprises a casing, wherein, a dividing wall is arranged in the casing, so that the space in the casing is divided into a first drying chamber and a second drying chamber. A feed inlet and an air outlet are arranged on the upper part of the first drying chamber, and a discharge hatch is arranged on the circumferential wall of the first drying chamber. An air inlet and the air outlet are arranged on the circumferential wall or the bottom of the second drying chamber. A sludge stirring apparatus is arranged in the first drying chamber, wherein, the sludge stirring apparatus comprises a rotation shaft and a stirring component fixed on the rotation shaft. A distribution chamber is arranged at the outboard of a side wall of the first drying chamber, the air inlet and the side wall adjacent to the first drying chamber have the through holes, and the side wall of the first drying chamber drying chamber has the through hole. The through hole on the side wall of the first drying chamber is communicated with the side wall of the distribution chamber, and is communicated with the air outlet of the second drying chamber and the air inlet of the distribution chamber. The invention also provides a direct air-intake sludge drying method by using the direct air-intake sludge drying apparatus.

Description

technical field [0001] The present invention relates to the field of sludge drying, and generally relates to a direct air-inlet sludge drying device, in particular to a direct air-inlet sludge drying device in the form of a single unit and the use of such sludge A drying device for sludge drying. Background technique [0002] Effective treatment of sludge is very important in the sewage treatment process. Usually, sewage treatment plants use concentration and dehydration methods to reduce the water content of sludge from more than 90% to about 60-80%, and then landfill, solidify or dry it. Landfill is easy to ferment sludge and cause secondary pollution to the environment. However, the existing solidification or drying equipment consumes a large amount of waste in the process of sludge treatment due to its strong viscosity, easy caking, and difficult to break. Energy, therefore, is difficult to reduce costs and improve efficiency, and cannot meet the needs of treating a la...

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Problems solved by technology

[0006] The present invention proposes a direct air-intake sludge drying device in a single form, wherein the sludge is continuously sheared, crushed and turned by the turning device arranged in the first drying chamber, and the first drying chamber The outlet pipe array on at least one inner wall blows drying gas to the sludge in the first drying chamber 6a, so that the sludge is in frequent contact with the drying gas, thereby solving the problem of uneven internal and external dryness during the sludge drying process question

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