Sludge resource treatment apparatus and sludge treatment method using the same

Abstract

The invention discloses a sludge resource treatment apparatus and a sludge treatment method using the same. The apparatus comprises a collecting filter, a sludge conveying device, a waste heat drying column, a cyclone separator, a rotary kiln, a draught fan, an airheater, a gathering tank, a deodorizing tower, a gas-liquid separator and a chimney, wherein the sludge conveying device, the waste heat drying column, the cyclone separator, the draught fan, and the deodorizing tower are successively connected through pipelines. When the sludge is anhydrated by the sludge resource treatment apparatus, the sludge generated by a sewage treatment plant is treated with gravity settlement to filter free water, dried with waste heat from the rotary kiln in the waste heat drying column and enters intothe rotary kiln to realize drying or sintering of the sludge; stink, flue gas and water vapor generate during the process is guided into the deodorizing tower for treatment by the draught fan. The treatment apparatus of the present invention has a compact and stable structure, small land occupation, is convenient for maintenance, and can be prepared into container overlap to facilitate carrying and save space.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a device for drying and sintering sludge after urban sewage treatment, and treating tail gas generated in the above process, and a corresponding method. Background technique [0002] With the acceleration of urbanization in our country, the output of urban sewage has increased year by year, and the sludge output of urban sewage treatment plants has also increased sharply. The sludge composition of sewage treatment plants is very complex, containing many pathogenic microorganisms, parasite eggs and heavy metals, etc. Therefore, proper treatment must be carried out to ensure the treatment effect of sewage and avoid more serious secondary pollution. [0003] The currently widely used sludge disposal technologies can be classified into three categories: one is land disposal, including sludge agricultural use and application in forestry or gardening; the other is landfill alo...

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Problems solved by technology

[0007] When the above-mentioned technology is drying the sludge, the sludge is dried in the form of mist in parallel contact with the high-temperature gas at the top of the tower, which greatly improves the drying efficiency of the sludge. The cost of treatment is higher than that of the existing technology; and the pressure of the compressed air is used to make the sludge come out in the form of droplets through the nozzle. On the one hand, the use of a large amount of compressed air increases the cost of drying raw materials; Waiting to mix and become exhaust gas, which greatly increases the amount of exhaust gas to be processed by the system, increasing the processing time and cost

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