UTILIZATION OF UNI-POLAR AND BI-POLAR ELECTROCOAGULATION (EC) TO OVERCOME HEAVY METAL POLLUTION IN SLAUGHTERHOUSE WASTE WATER

Khalid Tolba*, Huda Elsayed, Nirose Adel, Sara Ragab, Taghreed H. Abbas and Mahmoud Arafa

ABSTRACT

Electrocoagulation is a perspective well known modern alternative technology used to remove or mitigate the concentration of organic pollutants including heavy metal residues which accumulate and pollute raw and wastewater. Recent researches have been concentrating on finding new solutions through using new technologies, in order to improve and update the depollution process performance. The paper presents a new technical method for wastewater treatment using electrocoagulation. The results cleared that all wastewater samples contained heavy metals within the permissible limits except for Fe. Both Uni and Bi-polar methods have eliminated Zn & Cu completely by 100% from polluted cattle slaughterhouse waste water. Bi-polar electrocoagulation method was best than Uni-polar one as it was able to remove all types of heavy metal residues under test successfully (100%), although, the Uni-polar mitigate the level (mg/L) of Pb by 25% reduction level (0.009), Mn by 33.3 (0.05), while Fe level transformed from non-acceptable to acceptable level by 93% reduction percentage (0.3 to 0.02 mg/L).

Keywords: Wastewater treatment, electric cell, anode, cathode, CD power supply, Uni and Bi-polar Electrocoagulation methods.