Study On The Surface Of Cu/Fe Internal Electrolysis Process And Development Of New Reaction Bed

The catalyzed iron inner electrolysis process is a new developed method for wasterwater treatment. Zero-valent cupper is adopted as cathode to form the galvanic cells with zero-valent iron, which make the reduction capacity of zero-valent iron and the efficiency of electro-chemical reaction improved. It is easier for the refractory organic pollutants to turn into biodegradable matters througth this process.The process of the surface corrosion in iron and electrochemical reduction was been studied. The characterization of the corrosion rate and electrochemical reduction of cupper electrode as well as which place corrodes most on the surface of iron was characterized by the method of adding agar, phenolphthalein and potassium ferricyanide into electrolyte solutions. Results showed that the adoption of cupper could accelerate the corrosion rate of iron, the contact positon of cupper and iron didn't always corrode most. Organic matter would be reduced on the surface of iron as well as the surface of cupper.In the catalyzed iron inner electrolysis process, the material of cupper-plated iron was adopted to treat Neutral Bordeaux GRL and other dyes, which compared with the effect of primary Cu/Fe inner electrosis and iron inner electrolysis process. The influencing factors such as catalyst dosage, DO, coexisted ions and temperature were studied to evaluate the effect on the reduction of Neutral Bordeaux GRL by these three processes, results showed that the removal rate of Neutral Bordeaux GRL by cupper-plated iron system was higher than the other two processes. The optimal mass ration of catalyst and iron for Cu/Fe bimetal was about 0.2%-0.3%, which saved about 9,100 yuan/tFe than the primary Cu/Fe inner electrosis.In order to review the reductive degradation capacity of pollutant by the lab-scale continuous flow experiment of cupper-plated iron inner electrolysis process and the stability of the cupper-plated layer, a New-type Reaction Bed of cupper-plated iron inner electrolysis process was designed. The Neutral Bordeaux GRL was regarded as the discoloring object, and the influence of various factors on the...