Efficient treatment device for gold hydrometallurgy cyanide-containing wastewater

Abstract

The invention discloses an efficient treatment device for gold hydrometallurgy cyanide-containing wastewater. The device comprises a wastewater treatment device and an acidification pool arranged on the wastewater treatment device; the acidification pool is positioned at the lower left part of the wastewater treatment device; a recovery pool is arranged on the right side of the acidification pool,and an oxidation pool is arranged on the upper side of the acidification pool; a sedimentation pool is arranged on the right side of the oxidation pool; a liquid inlet is formed in the right side ofthe acidification pool; the liquid inlet is connected with a water pump in a wastewater pool through a liquid inlet pipe; a sulfuric acid liquid inlet pipe is arranged on the front side of the acidification pool; a primary water pump is arranged at the bottom of the acidification pool; the primary water pump is connected with the oxidation pool through a primary water conveying pipe; an oxidationflocculation composite bed is arranged at the pool bottom of the oxidation pool, a secondary water pump is arranged on the rear side of the pool bottom of the oxidation pool, and the secondary water pump is connected with the sedimentation pool through a secondary water conveying pipe; sulfuric acid is uniformly distributed to each corner of the acidification pool through a liquid outlet in a vertical liquid conveying pipe, so that the sulfuric acid can uniformly enter from each part of the acidification pool, wastewater in the pool is quickly acidified, and cyanide is acidified into hydrogencyanide gas.

Description

technical field [0001] The invention relates to the technical field of gold hydrosmelting, in particular to a high-efficiency treatment device for cyanide-containing wastewater in gold hydrosmelting. Background technique [0002] Gold hydrometallurgy is the process of contacting ore, concentrated ore enriched by ore dressing or other raw materials with aqueous solution or other liquids, through chemical reactions, etc., so that the metal contained in the raw materials is transferred into the liquid phase, and then the metal contained in the liquid phase is transferred to the liquid phase. It is a method of separating and enriching the contained metals, and finally recovering them in the form of metals or other compounds. It mainly includes unit operation processes such as leaching, liquid-solid separation, solution purification, metal extraction in solution and wastewater treatment. [0003] However, gold hydrometallurgy will produce a large amount of cyanide-containing was...

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Problems solved by technology

[0003] However, gold hydrometallurgy will produce a large amount of cyanide-containing wastewater. Since cyanide-containing wastewater is a highly toxic inorganic wastewater, it has a strong toxic effect on organisms and the environment, and it will produce highly toxic hydrofluoric acid gas under acidic conditions. There is a direct fatal hazard, and it is the waste water that the country compulsorily treats.

Therefore, it is of great practical and social significance to discharge cyanide-containing wastewater up to standard or reuse it for production. However, the treatment efficiency of traditional cyanide-containing wastewater treatment devices is relatively slow, and its treatment effect is not ideal, and Its processing cost is high

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