Incineration processing method and device for wet sludge

Abstract

The invention discloses wet sludge burning disposal method and device, which comprises the following steps: burning the wet sludge in the furnace directly or adding auxiliary fuel; supplying air to the hearth step by step; adding limestone in the furnace to reduce the SO2 drainage. The device comprises the following parts: hearth, cyclone separator, refeed unit and rear flue, wherein the sludge filling inlet and auxiliary fuel filling inlet are set on the top and bottom of hearth separately; the high-temperature air preheater ranged from 300 to 600 deg.c is set in the rear flue. The invention simplifies the disposal technology due to drying, burning and smoke innocent treatment in one device, which discharges at low level.

Description

technical field

[0001] The invention relates to a waste treatment method and device, in particular to a wet sludge incineration treatment method; the invention also relates to a wet sludge incineration treatment device. technical background

[0002] Sludge is a by-product of sewage treatment, and the amount of sludge accounts for 0.3% to 0.5% (volume) or 1% to 2% (mass) of the sewage treatment volume. With the development of industrial and agricultural production and the continuous construction of sewage treatment plants in various places, the amount of industrial and domestic sewage treatment in my country is increasing rapidly, and more sludge will be generated. The composition of sludge is very complex. In addition to a large amount of water, it also contains a large amount of organic matter, refractory organic matter, various trace elements, pathogenic microorganisms, parasite eggs, and heavy metals. How to make harmless and resourceful sludge with huge output and compl...

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