Powdered activated carbon has a bright future in the treatment of electroplating wastewater


In wastewater treatment, adsorption is mainly used to remove trace pollutants in wastewater to achieve the purpose of purifying humidity.

Powdered activated carbon has a bright future in the treatment of electroplating wastewater
In wastewater treatment, adsorption is mainly used to remove trace pollutants in wastewater to achieve the purpose of purifying humidity. Activated carbon adsorption is an economical and effective method for treating electroplating wastewater, mainly used for chromium-containing wastewater. Powdered activated carbon treatment of electroplating wastewater containing chromium has the advantages of easy extraction of raw materials, low investment, and water reuse.
Powdered activated carbon has a good application in the treatment of electroplating wastewater pollutants. When using powdered activated carbon, adsorption tests must be carried out according to the type and concentration of wastewater removed to determine the type of activated carbon and the amount of activated carbon required.
The following points should be paid attention to when treating electroplating wastewater with activated carbon:
1. Due to the small particles of powdered activated carbon, attention should be paid to dust pollution during use. Operators must be equipped with dust masks to avoid inhalation into the lungs.
2. Activated carbon should not contain impurity ions harmful to the electroplating tank. Inferior activated carbon should usually contain more impurities, such as zinc, so it should not be used.
3. For electroplating solutions with different levels of organic impurities pollution, appropriate dosage should be adopted, generally 2~5g·L. When the dosage is insufficient, the treatment effect is not good. The amount of activated carbon can also be passed through the small process test tank or The shell groove is determined.
4. It is advisable to use circulating filtration and compressed air for intermittent strong stirring. If manual stirring is used, stirring should be carried out uninterruptedly in all parts of the aqueduct, and no dead corners should be left.
5. After the adsorption process is completed, the tank should be kept for a period of time, and then filtered 2-3 times after complete precipitation, until there is no residual carbon powder in the bath, and the bath body is colored.
6. Using activated carbon continuous cycle filtration and electroplating process, when the saturated activated carbon is adsorbed, the activated carbon in the filter element should be cleaned and replaced in time to prevent desorption and re-pollution of the plating solution by impurities.