| N-pHenylglycinonitrile is a kind of important chemical dye Intermediate, which producing process make a large of wastewater having a high concentration and difficult to be decomposed. In order to reduce the wastewater toxicity and organic matter density and to enhance the biochemistry of wastewater, this research mainly aims at the pretreatment before wastewater biological treatment. Based on pHysical and chemical pretreatment, this thesis considers that the iron carbon micro-electrolysis technology and Fenton reagent oxidation technique are effectually combination; it can easily be used for pretreatment for high concentration chemical wastewater. Test items include: Fe-C micro-electrolysis technology, the best operating condition of Fenton reagent oxidation technique, the composition of wastewater treatment process on the comparison; the operating condition of N- pHenylglycinonitrile's oxidation by iron carbon micro-electrolysis-Fenton reagent, the stability of test running; the study of reaction kinetics on two pretreatment techniques.According basic principle and influencing factor of Fe-C micro-electrolysis technology, using cast iron and activated carbon particles as micro-electrolysis padding for research and analyzing with Orthogonal experiment and single factor, we determined The operational parameter for Fe-C micro-electrolysis technology are: scrap iron dosage of 300ml/L, Fe-Cmass ration of 2/3, reaction time is 75min, the removal rates of CODcr and aniline of wastewater is 50%, respectively, 60%. According to Fenton reagent high-level oxidation basic principle and influencing factor, added 30%H2O2 and FeSO4 to wastewater for oxidizing reaction with the hydroxyl free radical, the result showed that the best operating parameter of Fenton reagent oxidation technique are: 30%H2O2 dosage of 15ml/L, FeSO4 dosage of 200mg/L, the water's pH is regulated at 5, reaction time is 75min, the removal rates of CODcr and aniline of wastewater are 20% and 40%.To oxidate N-pHenylglycinonitrile with hard carbon micro electrolysis and the Fenton reagent oxidation, we carried on two kind of technical different union order separately the experimental study. Taking comparison on effect and cost, the test result indicated that the oxidation of aniline-acetonitrile by iron carbon micro-electrolysis-Fenton reagent is an optimal scheme, that is, the Fe2+ in effluent water of electrolysis and H2O2 take directly Fenton oxidation reactions, does not require additional FeSO4. In the best operational condition of Fe-C micro-electrolysis , the water's PH regulated at 4, 30% H2O2 dosage of 15ml/L, the stirring reaction time is 75min, and then adding sodium hydroxide to adjust PH at 9, coagulation precipitation 75 min, the removal rates of CODcr and aniline are above 65% and 80%.In addition, the analysis of results through continuity and dynamic test are: the treatment effect of wastewater on aniline–acetonitrile production will decline with the reactor's reaction time continue; after dynamic test 48h continuous operation, you must replace the packing, make CODcr and aniline removal rate kept at 50% and 70%and the effluent concentration of 20000mg/L and 1500mg/L below; the treated wastewater biodegradability increased to 0.30.Finally the kinetics of the two techniques had been done a preliminary study: the organic removal by Fe-C micro-electrolysis technology own a great deal to electrolysis and active carbon's adsorption. Micro-electrolysis can inhibit active carbon's adsorption, but adsorption of active carbon can promote the total removal. The study on kinetics of Fenton reagent oxidation of aniline-acetonitrile wastewater ,mainly based on organic concentration and initial dosage of hydrogen peroxide concentration, in order to determine the reaction kinetics model.
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