استخدام تقنية التخثير الكهربائي في إزالة المتطلب الكيميائي للأوكسجين (COD)‎ من مطروحات مياه الفضلات

الملخص EN

In this research, The effect of using electrocoagulation technology in removal the organic material (COD), from wastewater is practiced.

Continuous flow of electrocoagulation in experimental system was designed and turned on.

It consists of electrocoagulation reactor with constant volume (2L), flocculation basin and sedemintation basin with different volumes, there is a change in the flow rate with the change in detention time of electrocoagulation.

Aluminum plates were used for both electrodes.

The studied parameters in the research are the primary concentration of the pollutant, detention time of electrocoagulation and current that pass through electrodes.

Synthetic wastewater samples were used with concentration of COD (125, 250, 500,1000) mg / l.

at current (0.25, 0.5, 1, 2, 4) A and detention time is (1.5, 5, 10, 20) min .Experiment results show that increase the removal efficiency COD with increase of the current from (0.25 to 2) A and / or detention time for all the initial levels, Low concentrations showed more response than high concentrations in the removal process.

The maximum removal efficiency reached (99, 93, 91, 72) % with initial concentration (125, 250, 500, 1000) mg / l respectively.

The maximum removal occurred at current (2) A, detention time (20) min.

and the results found that this technique not efficient at high current (4) A.