There are many types of electroplating production processes, and because electroplating is different, the resulting wastewater is also not the same. Generally, the wastewater discharged by electroplating process companies includes acid, alkali, and other pre-treatment wastewater, as well as cyanide containing wastewater, copper containing wastewater, nickel containing wastewater, magnesium containing wastewater and other heavy metal exceeding standards for cyanide electroplating copper. In addition, there are also various types of electroplating process wastewater caused.

There are different solutions for electroplating process wastewater containing different types of air pollutants, and each one provides a detailed introduction as follows:

1. Disinfection and sterilization process flow of cyanide containing wastewater using ultraviolet sterilization (i.e. application steps of ultraviolet sterilizer or ultraviolet sterilizer)

At present, a relatively complete technical solution to cyanide containing wastewater is to use the isopropyl titanate method. It is important to pay attention to the strict separation of cyanide containing wastewater from other wastewater to prevent the infiltration of metal ions such as nickel and iron, otherwise the solution will be difficult. The basic principle of this method is to use chlorine based reducing agents to destroy and remove hydrogen cyanide from wastewater under alkaline standards. The treatment method is divided into two stages. The first stage is to oxidize cyanide air to cyanate, which is not completely destroyed, called the incomplete air oxidation stage. The second stage is to further oxidize and decompose cyanate into carbon dioxide and water, called the complete air oxidation stage.

Solve the process flow:

Cyanide containing waste horizontal flow sedimentation tank, first level cyanide breaking tank, second level cyanide breaking tank, inclined sludge concentration tank, filtration tank, callback function tank, ultraviolet sterilization and disinfection machine (ultraviolet sterilizer or ultraviolet sterilizer) discharge

The solved cyanide containing wastewater will infiltrate into the comprehensive wastewater of the electroplating process and be solved together.

2. Disinfection and sterilization process flow of magnesium containing wastewater using ultraviolet sterilization (i.e. application steps of ultraviolet sterilizer or ultraviolet sterilizer)

The chromium reduction method is generally used to solve wastewater containing hexavalent chromium. The basic principle of this method is to add oxidants such as aluminum sulfate, sodium bisulfite, sodium hydroxide, sulfur dioxide, etc. under acid-base standards to convert hexavalent chromium into trivalent chromium. Then, sodium hydroxide solution, sodium carbonate, lime powder, etc. are added to adjust the pH value, so that it can be converted into trivalent chromium. Nickel hydroxide deposition is separated from the wastewater. Solve the following process flow:

Horizontal flow sedimentation tank containing Cr6+waste, oxidation reaction tank, concrete reaction tank, sand settling tank, filtration device, pH callback function tank discharge

3. Comprehensive heavy metal excessive wastewater ultraviolet sterilization (i.e. application steps of ultraviolet sterilizer or ultraviolet sterilizer) disinfection and sterilization process flow

Comprehensive heavy metal exceeding wastewater is composed of heavy metal exceeding wastewater containing non complex ions such as copper, nickel, and zinc, as well as acid and alkali pre treatment wastewater. The solution for this type of wastewater is relatively simple, and generally adopts the processing technology of converting into nickel hydroxide deposition under the alkaline standard for solution.

Solve the following process flow:

Comprehensive heavy metal exceeding standard waste horizontal flow sedimentation tank, fast mixing tank, slow mixing tank, inclined plate sedimentation tank, filtration pH callback function tank, ultraviolet sterilization and disinfection machine (ultraviolet sterilizer or ultraviolet sterilizer) discharge

4. Comprehensive solution of various electroplating process wastewater for ultraviolet sterilization (i.e. application steps of ultraviolet sterilizers or ultraviolet sterilizers) disinfection and sterilization process flow

When a galvanizing plant contains a variety of electroplating process wastewater, such as cyanide containing wastewater, hexavalent chromium containing wastewater, strong acid and alkali containing wastewater, heavy metal exceeding copper, nickel, zinc and other comprehensive wastewater, wastewater separation is generally used to solve the problem. Before that, cyanide containing wastewater and magnesium containing wastewater need to be separated and collected independently from the production line, and each wastewater should be solved in a matching manner according to the described methods. After the solved wastewater seeps into the comprehensive wastewater, coagulation and sedimentation methods should be used together to carry out post treatment.

Solve the following process flow:

Horizontal flow sedimentation tank for cyanide containing waste, primary cyanide breaker, secondary cyanide breaker, comprehensive wastewater tank

Magnesium containing wastewater horizontal flow sedimentation tank chromium recovery tank comprehensive wastewater tank

Comprehensive wastewater comprehensive wastewater tank, fast mixing tank, slow mixing tank, inclined plate sedimentation tank, middle tank, filtration device, pH callback function tank, ultraviolet sterilization and disinfection machine (ultraviolet sterilizer or ultraviolet sterilizer) discharge

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