| Fenton system applied for dosing excess ferrous iron water caused by pollution and the degradation of organic pollutants when H2O2 cost expensive existing problems.This study proposes three iron-based-a novel organic complexes Fenton-like system, and were supplemented by electrochemical, UV light and ultrasound. Three enhancement means(Electro-Fe2+/EDTA, UV/Fe3O4/Ox and US/Fe/TPP), Study their reactive dye Rhodamine B and Norfloxacin and other typical refractory rapid degradation of organic pollutants, the specific content:(1) The experiment is based on a homogeneous Fe2+-EDTA electrochemically active auxiliary Fenton-like degradation of Rhodamine B, Fe2+ degradation efficiency of Rhodamine B to reach 94.5% in 3h, and the introduction of BBD software simulation and optimization experiments the influence of different parameters on the degradation of Rhodamine B. Studies show that: BBD software which predict the actual values and test the resulting very close, BBD simulation software for this system degradation of Rhodamine B with high reliability, Fe2+: EDTA,p H,concentration and voltage are Rhodamine B degradation efficiency of Rhodamine B influential.(2) The Fe3O4-Oxalic degradation of acid system for NOR,The impact of the introduction of UV degradation efficiency of collaborative experiment with different parameters of NOR. Obtained optimal experimental parameters NOR degradation condition is p H=3, NOR initial concentration 10mg/L, initial Fe3O4 concentration of0.5g/L, Oxalic acid concentration is 1m M, and different parameters of the kinetic NOR degradation analysis. The kinetic parameters of the system showed that UV has a good synergy. Explores the NOR Variation degradation of iron process NOR possible degradation of intermediate products were HPLC-MS track. Degradation of the system may play a role NOR radical capture agents experiment to test the system in the degradation of NOR is hydroxyl radicals and superoxide The results of free radicals andhydrogen peroxide free radicals and other joint action.(3) To explore the US-ZVI-TPP system for NOR degradation, The use of EDTA,EDDS, DTPA complexing agents do comparison with TPP. TPP come to the choice of the complexing agent of the system has a good degradation, experimenting with different parameters NOR impact on the degradation efficiency. Obtained the optimal experimental parameters NOR degradation conditions p H=7, NOR initial concentration10mg/L, Fe concentration of 1.0g/L, TPP concentration of 0.3m M, The degradation process of the experiment inhibition capture agent to the system, To variation in iron NOR degradation processes were studied, and the conditions were the parameters dynamics simulations prove the reliability of the test results, Study the variation of the process of degradation of iron, and degradation of each NOR the kinetic analysis, the US has a good synergy on the system. |
