铁屑内电解处理酸性废液实验方案（Experimental scheme for treatment of acid waste liquid by iron chip internal electrolysis）.doc

铁屑内电解处理酸性废液实验方案（Experimental scheme for treatment of acid waste liquid by iron chip internal electrolysis） Experimental scheme for treatment of acid waste liquid by iron chip internal electrolysis - Zou Jinping The principle of internal electrolysis of iron The industrial scrap iron after activated as raw material, the use of micro battery principle formed between iron and carbon caused by electrochemical and chemical reactions and physical interactions, including catalysis, oxidation, reduction, replacement, flocculation, adsorption precipitation and other comprehensive treatment effect, reduce the concentration of organic matter in wastewater. Principle of micro electrolysis of iron and carbon Micro electrolysis is based on the principle of electrochemical corrosion of metal materials, the two different electrode potential of metal or metal and non direct contact together, immersed in the electrolyte solution conductivity in the cell formation of numerous tiny corrosion cells (including macro and micro battery battery), corrosion of metal anode consumption. The redox potential of iron and carbon is greatly different, and iron filings and iron carbon powder are added into the waste water to form corrosion batteries. It combines oxidation reduction, flocculation, adsorption, catalytic oxidation, complexation and electrodeposition. In acidic conditions, when the iron carbon mixture is added to the electrolyte solution, the following electrode reaction occurs through the galvanic cell effect: Anode (Fe): Fe-2e = Fe2+, E, theta, =-0.44, V Cathode (C): (1) acid conditions: 2H++2e, 2[H], H2, E, theta = 0V (2) under neutral alkaline conditions: O2+2H2O+4e to 4OH-, E, theta =0.40V (3) under acidic oxygen enrichment conditions: 4H++O2+4e to H2O2, E theta =1.23V; It can be seen that under acidic and rich oxygen conditions, the maximum potential difference and the fastest corrosion reaction are the best. The products produced by the electrode reaction have higher chemical act