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How to remove the heavy metal in electroplating wastewater

by:Deyuan      2020-08-11
Electroplating factory a lot of waste water produced in the process of production, this kind of waste water to clean waste solution, water, etc. , there is also a variety of heavy metal elements, the composition is very complicated, if not handled, direct emissions, will cause serious harm to the environment, causing pollution of groundwater, pose a threat to human health.

disposal of wastewater from electroplating factory there are a lot of way, but the traditional management methods many disadvantages, such as can't handle to a standard level, high processing cost burden to the enterprise. Therefore, how to effective treatment of electroplating wastewater, equipment type selection is the key of the electroplating factory focus on how to proceed.

electroplating waste water, the reasonable processing methods is solvent extraction. Choose suitable extractant solvent extraction, the organic phase and water phase blend each other, in the separation of aqueous phase after the material into the organic phase, again by two phase mass density different separate two phase. To reduce COD, organic phase in the extraction wastewater.

in terms of equipment type selection, the traditional extraction, extraction tower equipment cannot meet the requirements of electroplating waste water treatment, and new type centrifugal extraction machine can achieve satisfactory effect. Centrifugal extraction machine compared with traditional mixer settler and extraction tower, the working principle of centrifugal extraction machine with both the distinction that having essence. Centrifugal extraction machine is the use of motor driven rotary drum high-speed rotation, the density of different and each of two immiscible liquids in drum or under the action of shear force produced by the rotation of blades complete mixing and mass transfer, and the effects of the centrifugal force in the high-speed rotating drum under rapid separation.

in the actual operation process, electroplating waste water and extracting agent according to certain proportion in the centrifugal extraction machine, with the aid of the rotation of the drum, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer, mixing and mass transfer process. Mixture again after the effect of drum centrifugal force through two separate out of the body side by side. Treated wastewater reached into the biological requirements.

extraction equipment related graph:
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