Resource treatment method for household garbage and biochemical sludge

Abstract

The invention discloses a resource treatment method for household garbage and biochemical sludge. The resource treatment method for the household garbage and the biochemical sludge is characterized by comprising garbage sorting, sludge drying, low-temperature dry distilling, melting and burning, oil and gas separating and purifying and flue gas treating processes and comprising the following specific steps: (1) sending the household garbage to the garbage sorting process and sorting out useful fuel, and sending the biochemical sludge to the sludge drying process to obtain the dried sludge; (2) sending the useful fuel and the dried sludge to a low-temperature dry distilling process to obtain dry-distilled oily gas and dry-distilled residues; (3) sending the dry-distilled oily gas and the dry-distilled residues to the oil and gas separating and purifying, and melting and burning processes, separating out tar and glassy solid residues; and (4) treating flue gas generated in the melting and burning process by the flue gas treating process, and discharging the flue gas into upper air. The problem that dioxin is generated when the garbage and the sludge are burned can be solved easily; resource utilization of the household garbage and the biochemical sludge is facilitated; the garbage sorting difficulty is reduced; and the resource treatment method for the household garbage and the biochemical sludge is convenient in industrial application.

Description

technical field

[0001] The invention belongs to a method for processing domestic garbage and biochemical sludge, and in particular relates to a resource treatment method for domestic garbage and biochemical sludge. Background technique

[0002] With the growth of population, the progress of urbanization and the expansion of city scale, the amount of urban waste generated in my country is also increasing day by day, which not only seriously endangers the environment, but also occupies a large amount of land resources, and some cities even cause the situation of garbage siege. According to the statistics of 668 cities across the country, the domestic garbage produced in one year has reached 150 million tons, and the per capita garbage production is about 450-500kg, and it is still increasing at an annual growth rate of 8%-9%. After being properly compressed, domestic waste has a density of about 0.8t / m3, so 150 million tons of domestic waste is equivalent to 187.5 million cubi...

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