Sludge drying system

Abstract

The invention provides a sludge drying system which comprises a drying device. The drying device comprises a feed chamber, a sterilizing chamber, a drying chamber and a discharge chamber, wherein a feed port is formed in the top of the feed chamber; a first material falling port is formed in the bottom of the feed chamber and positioned right under the feed port; the sterilizing chamber is arranged below the feed chamber and is communicated with the feed chamber through the first material falling port; a second material falling port is formed in the bottom of the sterilizing chamber; the drying chamber is arranged below the sterilizing chamber and is communicated with the sterilizing chamber through the second material falling port; a drying chamber exit is formed in a side wall of the drying chamber; the discharge chamber is arranged on one side of the sterilizing chamber and the drying chamber; the upper part of the discharge chamber is communicated with the sterilizing chamber; thelower part of the discharge chamber is communicated with the drying chamber through the drying chamber exit; a discharge port is formed in the bottom of the discharge chamber. The sludge drying systemprovided by the invention not only can realize sludge drying treatment through sludge heating dehydration, but also can kill most bacteria in the sludge.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sludge drying system. Background technique [0002] With the development of our country's social economy and cities, the amount of urban sewage production continues to increase. In recent years, the state has actively supported it in terms of policy and financial resources, and built a large number of urban sewage treatment plants to maintain the water environment. However, the treatment of urban sewage sludge is still a technical problem, and improper disposal will cause serious secondary pollution. [0003] At this stage, the usual method is to dry the sludge and then recycle it. The sludge drying system is mainly based on mechanical dehydration and thermal dehydration. The existing thermal body dehydration and drying equipment has the following problems: [0004] (1) During the mechanical dehydration process, the bacteria in the sludge cannot be effectively killed, which ...

AI Technical Summary

Problems solved by technology

[0004] (1) During the mechanical dehydration process, the bacteria in the sludge cannot be effectively killed, which brings hidden dangers to the subsequent recycling of the sludge

[0005] (2) The high-temperature flue gas generated during the dehydration process is directly discharged into the surrounding environment, causing great pollution to the environment

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