【摘要】 乳化液废水含有大量表面活性剂,化学性质稳定,给处理带来很大难度。为解决乳化液处理困难的问题,我们以某电子制造商产生的乳化液废水为研究对象,采取加热酸化-Fenton氧化开展处理研究,意在解决实际工程中乳化液废水处理困难的问题,同时为乳化液废水处理在技术上提供新的思路。在加热酸化-Fenton氧化处理中,由于乳化液稳定性极好,传统酸化破乳效果不理想,将加热用于酸化破乳,油水分离效果明显,在加酸量1.0 mL 98%H2SO4/100mL乳化液、加热温度95℃、加热时间1h条件下,加热酸化破乳使初始COD>20万mg/L,浊度>8000 NTU的乳化液废水COD降到46592mg/L,浊度降到20 NTU以下,COD和浊度的去除率分别达90.7%和97.5%以上;由于破乳后的废水仍具有很高的COD浓度,因此采取Fenton氧化进一步处理,在ρFe2+/ρH2O2=1∶30、ρH2O2/ρCOD=1.4、初始pH=4的条件下,经处理后的出水COD可降到18600 mg/L,去除率达61.4%,其B/C可由破乳后的0.11提高到0.3,废水的可生化性大大提高,为后续进一步处理提供可能。更多还原

【Abstract】 Emulsion contains a lot of surface active agent which have stable chemical properties,so it is very difficult to treatment.in order to solve this problem,this paper studied the emulsion wastewater from a electronic manufacturer in Sichuan.Trough heating,acidification and fenton oxidation process,try to look for an applicable method in the actual engineering,and provide new ideas for the treatment of emulsion wastewater.In the Heating-acidification-Fenton oxidation process,emulsion is very stable,so the traditional acidification is not ideal.But add heating process while acidification,the efficiency of oil-water separation is obvious.Under the condition of heating time one hour,heating temperature 95℃ and H2SO4(98%) dosage 1.0mL in 100 mL emulsion,the emulsion with an initial COD over 200000 mg /L and turbidity over 8000 NTU was reduced to 46592 mg /L COD and20 NTU turbidity,the removal rate of COD and turbidity was 90.7% and 97.5% respectively.Because of the effluent still has high COD concentration,Fenton oxidation is used for further treatment.Under the condition of the initial pH is 4,ρFe2 +/ρH2O2=1∶ 30、ρH2O2/ρCOD =1.4,the COD of the effluent reduced to 18600mg/L and the removal rate reached 61.4%.In addition,the B/C of wastewater increased from 0.11 to 0.3 after Fenton oxidation,which makes it possible for further treatment.更多还原