Study On Fenton's Reagent For Treatment Of Bathing Sewage

Shortage of water resource becomes increasingly serious, and the regeneration and reuse of the sewage is one of the effective way to solve shortage of water resource. Family's bathing sewage can be reused after treatment for its large discharge amount, simple pollutant composition and low pollutant level.As we haven't seen any research report about the reuse of family's bathing sewage,so this paper has carried out the research of the treatment methodFe²⁺ catalyse the decomposition of H₂O₂ and then yield · OH (known as Fenton's reagent) ,which has a very high oxidation potential and oxidation rate.Besides, H₂O₂ can kill the bacterium and virus,the H₂O₂ degradated to H₂O and O₂,without secondary pollution.After investigation,we found the main organic pollutant of family's bathing sewage is Sodium Dodecylbenzene Sulfonate(SDBS),so this paper has carried out the research of SDBS and bathing sewage by using Fenton's reagent.The main results were as following:1.First, the effects of effecting factors such as H₂O₂ concentration, Fe²⁺ concentration,pH,reaction temperature, dissolved oxygen, adding ways of H₂O₂,etc. have been studied. The experimental results indicated that H₂O₂ concentration, Fe²⁺ concentration and pH were the main effecting factors.2.The effects of several inorganic ions such as H₂PO₄^-,Cl^-,HCO₃^-,SO₄^2- and NH₄⁺ have been studied. The results indicated that H₂PO₄^-,Cl^- and HCO₃^- have obviously inhibition ability to the the degradation of SDBS, but SO₄^2- and NH₄⁺ haven't show any effects.3. The dynamics of SDBS degraded by Fenton's reagent was also investigated in this paper. The results proved that the rate coefficients of the dynamic model was correlated to the H₂O₂ concentration, Fe²⁺ concentration and the reaction temperature. Moreover, we could obtain the dynamics equation of SDBS:...