Concentration and recovery device for industrial electroplating wastewater

Abstract

The invention discloses a concentration and recovery device for industrial electroplating wastewater. The whole device comprises a heating separation system, a water condenser, a liquid material condenser, a liquid material collection tank and a distilled water collection tank; at least one stage of separation device is included in the heating separation system, and each stage of the separation device is composed of a straight-tube type evaporator and a cyclone-type separator; a straight-tube inner passage and a straight-tube outer passage used as waste liquid pipelines are included in the straight-tube type evaporator; and the outlets of the waste liquid pipelines in the same stage of the separation device directly extend into a separation cavity in the same stage of the inner cyclone-type separator, a liquid collection tube is arranged at the bottom of the separation cavity, and a gas collection tube is arranged at the top of the separation cavity. The concentration and recovery device for industrial electroplating wastewater can be used for effectively recovering precious metal ingredients in the electroplating wastewater and is large in unit heating area, short in solution flow-stopping time, high in heat evaporation efficiency, and economical in concentration cost.

Description

technical field [0001] The invention relates to a treatment device for industrial electroplating wastewater, in particular to a concentration recovery device for industrial electroplating wastewater. Background technique [0002] In the production of industrial electroplating (including bright nickel electroplating, semi-bright nickel electroplating, acid copper electroplating, hexavalent chromium electroplating, acid tin plating, etc.), there will be a lot of electroplating washing liquid, electroplating bath liquid water and other industries containing a lot of heavy metals waste water. [0003] In the past, due to the high cost of recycling and treatment, these industrial wastewaters were directly discharged outside, so that various heavy metal pollutants directly entered the water body, and heavy metals in the water body have a high stability and refractory property. When they are in the water body Accumulated to a certain limit, it will cause serious harm to the water ...

AI Technical Summary

Problems solved by technology

[0003] In the past, due to the high cost of recycling and treatment, these industrial wastewaters were directly discharged outside, so that various heavy metal pollutants directly entered the water body, and heavy metals in the water body have a high stability and refractory property. When they are in the water body Accumulated to a certain limit, it will cause serious harm to the water body-aquatic plant-aquatic animal system, and may directly or indirectly affect human health through the food chain. Therefore, heavy metal pollution in water has become the most serious environmental problem in the world today. One, and how to scientifically and effectively solve the pollution of heavy metals to water bodies has become one of the hotspots of environmental protection workers. One of the most effective methods is to grasp from the source of pollution, and then discharge industrial wastewater after environmental protection treatment.

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