Technique and equipment for treating electroplating sludge

Abstract

This invention discloses apparatus and method for treating electroplating sludge. The method comprises: (1) drying electroplating sludge (water content higher than 75%) to a water content of 40-65%; (2) uniformly mixing with coal, and sintering in a sintering furnace until the water content is 2-5%; (3) smelting in a smelting furnace; (4) refining and separating to obtain metal alloy. The apparatus comprises: a smelting furnace, a desulfurization deduster, a sintering furnace, a dust collection chamber and a water collection pool. The gas generated in the sintering or smelting process is treated by: introducing into the dust collection chamber through the dust exhaustion port of the sintering / smelting furnace, dust-falling, introducing into the desulfurization deduster, performing desulfurization amd dedusting, and exhausting. The water supplied by the water collection pool, and the wastewater generated in desulfurization amd dedusting is returned to the water collection pool for recycling. All of the treatment processes of the method are automatically performed by machines, so the danger of manual operation can be avoided. The method has such advantages as high efficiency, high safety and no pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection treatment, and in particular relates to a treatment process of electroplating sludge and a device thereof. Background technique [0002] Electroplating sludge is the sediment produced during the treatment of electroplating sewage, and its main components are chromium, iron, copper, nickel, aluminum, zinc, magnesium, calcium, silicon, sulfur, etc. Because it contains a large amount of toxic and harmful heavy metals, it is a controlled toxic industrial solid waste, and due to the development of modern industry, the discharge of electroplating sludge is increasing. If large-scale electroplating sludge is not properly treated, it will eliminate toxic and harmful waste. Substances will cause serious damage to the environment and endanger human health. [0003] Usually, the treatment process of electroplating sludge is mainly wet treatment, that is, the heavy metals in electroplating s...

AI Technical Summary

Problems solved by technology

Although this method adopts a dry method to avoid the above-mentioned defects of the wet method, the electroplating sludge is smelted directly in this method. Because the electroplating sludge has a lot of water, the amount of coke is relatively large, and the generated dust is relatively large. More, lower recovery rate

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