Electroplating wastewater chemical precipitation treatment method

Abstract

The invention relates to an electroplating wastewater chemical precipitation treatment method. Chemical precipitation work of electroplating wastewater is completed through cooperation of a fixing device, a shaking device and a feeding device. The electroplating wastewater chemical precipitation treatment method provided by the invention can solve the problem that the existing electroplating wastewater chemical precipitation treatment equipment is directly mounted in a precipitation tank when being used for treating electroplating wastewater to make the equipment and the precipitation tank form a whole, the electroplating wastewater can only be subjected to precipitation treatment in one precipitation tank, and the equipment is poor in applicability, so that the treatment cost of the electroplating wastewater is high, and the existing electroplating wastewater chemical precipitation treatment equipment is difficult to uniformly spray a precipitator into the precipitation tank when directly adding the precipitator into the electroplating wastewater in the precipitation tank, and the treatment efficiency of the electroplating wastewater is low.

Description

technical field [0001] The invention relates to the technical field of electroplating wastewater treatment, in particular to a chemical precipitation treatment method for electroplating wastewater. Background technique [0002] Electroplating wastewater is wastewater or waste liquid discharged from electroplating production. The wastewater or waste liquid discharged from the electroplating factory contains a large amount of metal ions such as: chromium, pickaxe, nickel, and organic additives such as cyanide, acid, and alkali. Some metal ions exist in the form of simple cations, some exist in the form of acid radical anions, and some exist in the form of complex complex ions. Neutralization precipitation method, neutralization coagulation precipitation method, oxidation method, reduction method, barium salt method, ferrite method and other chemical methods are commonly used in electroplating wastewater treatment. When chemically treating electroplating wastewater, the preci...

AI Technical Summary

Problems solved by technology

[0004](1) When the existing electroplating wastewater chemical precipitation treatment equipment is used to treat electroplating wastewater, the electroplating wastewater chemical precipitation treatment equipment is usually directly installed in the sedimentation tank, so that the equipment and sedimentation The pool forms a whole, so that one equipment can only carry out sedimentation treatment on one sedimentation tank, and the applicability of the equipment is poor, which makes the treatment cost of electroplating wastewater high;

[0005](2) When the existing electroplating wastewater chemical precipitation treatment equipment treats electroplating wastewater, it usually directly adds a precipitant to the electroplating wastewater in the sedimentation tank, so that the electroplating wastewater Precipitation of heavy metal impurities. When existing equipment adds a precipitant to the electroplating wastewater, it is usually difficult to evenly sprinkle the precipitant in the sedimentation tank, which makes the treatment efficiency of the electroplating wastewater low.

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