Study On Treatment Of Explosive Wastewater By Unified The Ultraviolet Light (UV) And Fenton Reagent

The explosive industry is one of heavy pollution. Because arranges in the productionwastewater contained TNT and RDX are poisonous and baneful. Although the pollutantquantity are not many, but if does not take the suitable measure, it will be possible to causethe serious partial environmental pollution and it will must do much harm to the humanity andthe environments. The Fenton reagent has the certain function to organic wastewater. Theadvanced oxidation processes of unified UV and Fenton reagent is better than other processesin the treating high potency, difficult degraded, virulent and harmful wastewater. In this paperthe trails of degradations of TNT and RDX explosive wastewater by unified Fenton reagentand UV are made.In the first step of the experiment, by orthogonal test the best response condition totreat TNT and RDX wastewater by UV/Fenton was obtained. And the influence factor wasanalyzed in the single factor experimental. Meanwhile the contrast experiment has carried onbetween the Fenton reagent and UV/Fenton. The experimental results are as follows:(1)The processing effect is excellent by UV/Fenton processing to treat TNT and RDXwastewater, and the final water sample reaches a national level to discharge thestandard. The experiment proved this method processing contained TNT and the RDXwaste water is feasible e.(2) The Fenton agent and the UV/Fenton all have the better degeneration effect to TNTand RDX. And UV/Fenton processing is obviously better than Fenton processing infunction, which reduced the amount of Fe²⁺, maintained availability ratio of H₂O₂,and reduced the amount of H2O2 at the same time.(3) Through analyzing the influence factor of UV/Fenton treating 25mL,80mg/L TNT orRDX the optimum response condition has obtained: pH is 3, the volume of H2O2 is1.5 milliliter, the volume of Fe2+ is 1.5 milliliter and the reaction time is 2h.Under thiscondition the removing rate of TNT reaches above 99%, CODCr is 20.1mg/L, theremoving rate of RDX reaches above 97%, CODCr is 36.4mg/L.