Precious metal contained waste liquid recovery processing unit

Abstract

The invention provides a precious metal contained waste liquid recovery processing unit, comprising a multi-level deposit chamber and a connecting pipeline, wherein a water pump is connected at the water outlet at the lower part of a recovery deposit chamber; the water pump is successively connected with a bag type filter with a pressure gauge, a carbon fiber disc filter and a carbon fiber felt filter through the pipeline; a group of resin adsorption devices are arranged on the pipeline at the outlet of the carbon fiber felt filter; the adsorption device comprises two resin adsorption tubes; and conductivity analyzers with alarming function are respectively arranged on the water inlet pipeline of the adsorption device and the water outlet pipeline. In the invention, for different preciousmetal ions, the carbon fiber adsorption capacity is improved by different processing modes such as activated preparation, superficial treatment, and specific organic matter adsorption; the precious metal in the waste liquid can be recovered effectively, and leaky precious metal can be adsorbed again by special resin of the adsorption device; cyanide, organic matters and other precious metal ions in the liquid can be removed; and then acid-base treatment is carried out to realize safety emission or recycling.

Description

technical field [0001] The invention belongs to the technical field of metal recovery and environmental protection, and relates to the recovery of precious metal electroplating waste liquid, the recovery of precious metals in a precious metal mining leaching system, and a recovery device for silver from waste liquid in the image film washing industry, and specifically relates to a treatment device for recycling waste liquid containing precious metals. Background technique [0002] In the existing metal waste liquid recovery technology, it is generally carried out by adsorption, and resin materials are mainly used. Because the adsorption speed is very slow, it often takes several hours or even dozens of hours to reach adsorption equilibrium, and desorption Difficult, the desorbed water dose is large, resulting in incomplete recovery; the adsorption capacity is small, the average adsorption is only 20-30mg / g resin, resulting in huge adsorption equipment. Therefore, people in t...

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Problems solved by technology

causing environmental pollution

Because the distribution of precious metal ions is relatively dispersed during resin adsorption, it will also lead to incomplete recovery, and it is difficult to meet the complete recovery requirements of precious metals in the discharged waste liquid

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