Treatment device for thiocyanate wastewater

Abstract

The invention discloses a treatment device for thiocyanate wastewater. The treatment device comprises treatment equipment, a neutralizing device which is arranged on the rear side of the treatment equipment, a catalyst chamber which is connected with the treatment equipment, a reactant chamber and a stirring device which is arranged in the treatment equipment, wherein the treatment equipment includes a reaction tank, an air inlet section which is disposed at the bottom of the reaction tank and an air inlet member which is matched with the air inlet section, and the stirring device is providedwith an aeration member which communicates with the air inlet member. According to the treatment device, by arranging the aeration member on the stirring device, gas can be introduced directly into the wastewater for aeration in the process of wastewater stirring through the stirring device, so that it is ensured that the wastewater is stirred completely by the introduced gas into the wastewater for aeration, the gas, wastewater and catalyst which are sprayed are mixed to a maximum extent for a reaction, and thiocyanate compounds are removed effectively from the wastewater.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to treatment equipment for sulfur cyanide wastewater. Background technique [0002] In the process of preparing industrial products, sulfur cyanide often produces a certain amount of residual SCN due to excessive dosage. - , the ion has good water solubility, so industrial production processes will produce a large amount of sulfur cyanide-containing wastewater. Sulfur cyanide-containing wastewater is generally treated by oxidation method, mainly three methods are wet oxidation method, chlorine oxidation method and ozone oxidation method. The existing three treatment methods all need to set up a separate aeration device for aeration, so that the gas can react with the wastewater in the reaction tank. However, in this way, the effect of aeration is poor, and it is difficult for the gas exposed into the reaction tank to fully match the SCN in the wastewater. - r...

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Problems solved by technology

However, in this way, the effect of aeration is poor, and it is difficult for the gas exposed into the reaction tank to fully match the SCN in the wastewater. - reaction, resulting in incomplete removal of thiocyanide from wastewater

[0003] Secondly, due to the separate aeration device, not only the construction cost of the equipment is high, but also the damage rate of the equipment is high and the maintenance is frequent

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