Electroplating sewage treatment device

Abstract

The invention belongs to the field of sewage treatment, and particularly relates to an electroplating sewage treatment device which comprises a shell, wherein the shell is internally provided with a water purification cavity, a filtering cavity and a freezing cavity, a water purification mechanism is arranged in the water purification cavity, a water inlet pipe penetrating through the inner wall of the freezing cavity is fixedly arranged on the side, which is away from the filtering cavity, of the freezing cavity, a filtering mechanism used for filtering particle impurities and metal ions is arranged in the filtering cavity, an oil removing mechanism is arranged between the freezing cavity and the filtering cavity, the space, which is close to the water inlet pipe side, of the oil removing mechanism is the freezing cavity, the space, which is away from the water inlet pipe side, of the oil removing mechanism is the filtering cavity, the water purification cavity is farther from the water inlet pipe than the filtering cavity and the freezing cavity, an activity recovery mechanism is arranged on the inner wall, which is away from the water inlet pipe, of the water purification cavity, and metal ions are finely filtered through multiple layers of ion exchange membranes, so that the use of chemical reagents can be reduced, and pollution of reaction substances is avoided.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment device for electroplating sewage. Background technique [0002] The wastewater and waste liquid discharged from the electroplating factory contain a large amount of metal ions such as: chromium, pickaxe, nickel, cyanide, acid, and alkali, and generally contain organic additives. Some substances are highly toxic substances that are carcinogenic, teratogenic, and mutagenic , chemical methods such as neutralization precipitation method, neutralization coagulation precipitation method, oxidation method, reduction method, barium salt method, ferrite method, etc. are commonly used in electroplating wastewater treatment. There are following problems in the treatment of electroplating wastewater: [0003] ① These methods need to put in metal precipitating agent or chemical reaction reagent during the treatment process, and after the electroplating sewage is processed, the adde...

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Problems solved by technology

[0003] ① These methods need to put in metal precipitating agent or chemical reaction reagent during the treatment process, and after the electroplating sewage is processed, the added reagent must be processed, which is cumbersome and cumbersome;

[0004] ②The sewage treated by these treatment methods contains more impurities;

[0005] ③In the process of processing, molecular screening nets are often used, and the cost of molecular screening nets is relatively high. Molecular sieves are combined with reagents, which increases the processing cost

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