Analysis of the Effect and Influencing Factors of EC Process on Heavy Metal Waste water Treatment
Heavy metal wastewater poses great harm to the environment and human life,therefore effective wastewater treatment measures need to be taken.To this end,a magnetic enhanced electrocoagulation process was proposed and its influencing factors were analyzed,including electrode plate material,current density,and initial pH value,to explore the removal rate of heavy metals under different conditions.The results showed that when the anode of the electrode plate was iron,the removal rate of hexavalent chromium reached 90％at a reaction time of about 28 minutes,and the removal rates of lead,copper,and nickel reached 99.76％,99.99％,and 99.68％,respectively,after 30 minutes of reaction.Therefore,the anode of the electrode plate was set to iron.After 20 minutes of reaction,as the current density increases,the removal rate of hexavalent chromium,lead,copper,and nickel by the magnetic enhanced electrocoagulation process gradually improves.Taking into account the reaction rate and electrode lifespan,the current density was ultimately set to 7.35 mA/cm2.In addition,when the initial pH value was 7,the removal rates of lead,copper,and nickel reached 100％,90.23％,and 95.68％,respectively.Due to the continuous increase in pH value during the reaction,the initial pH value was set to 6.64.It can be seen that the process proposed by the research institute has demonstrated significant advantages in the treatment of heavy metal wastewater,providing reliable method support for modern industrial and agricultural wastewater treatment.
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