Electrochemical Treatment of Wastewater Industrial Cartons

In the work described here the technical and economic feasibilities of Advanced Oxidation Processes (AOPs) have been studied: Conductive-Diamond Electrochemical Oxidation, and SnO2 anode with biological technical. The comparison was made by assessing the two technologies with real example wastewaters polluted with actual wastes industrial cartons in area of Agadir country. That industrial waste contains different types of organic compounds such as (starch, Paraffin's, glue, caustic soda, salt, lubricants, inks, and borax). All two technologies were able to treat the wastes, but very different results were obtained in terms of efficiency and mineralization. Only CDEO could achieve complete mineralization of the pollutants for all the wastes. However, the efficiencies were found to depend on the concentration of pollutant (mass transfer control of the oxidation rate). Results obtained in the oxidation with SnO2 are lower than boron-doped diamond anodes at 60 mA/cm(2). The value of COD varies between 2g / L and 3g / L, which correspond to a variation in the costs of the electrochemical oxidation of wastewaters of operation of the cell 945DH / days to 1500 DH / days. The efficiency of the electrochemical process was found to depend mainly on the pollutant concentration present in the waste and on the applied current density. The high efficiency of this technology can be explained in terms of the direct electro-oxidation at the BDD surface and the oxidation carried out by hydroxyl radicals and other electro-generated oxidants.