【摘要】 以高硝态氮、难降解的有机制药废水为处理对象,探讨了铁炭微电解工艺对其脱氮效能及影响因素。结果表明:填料粒径、pH值、铁炭比、气水比、停留时间等因素均对铁炭微电解系统的脱氮效能有显著影响;在铁屑和活性炭粒径均为35目、pH值为3、Fe/C值为3∶1(体积比)、气水比为5∶1、停留时间为1.5 h的最佳条件下,当进水TN、NH4+-N和NO3--N的平均浓度分别为823、30和793 mg/L,BOD5/COD值为0.1时,铁炭微电解系统对TN、NH4+-N和NO3--N的平均去除率分别可达到51.5%、70%和50.94%。更多还原

【Abstract】 The nitrogen removal efficiency and influence factors of ferric-carbon micro-electrolysis process in treatment of high nitrate nitrogen and refractory organic pharmaceutical wastewater were investigated.The results show that media size,pH,Fe/C ratio,air-water ratio,reaction time and so on have significant effect on the nitrogen removal efficiency of ferric-carbon micro-electrolysis system.Under the optimal conditions of iron and carbon sizes of 35 mesh,pH of 3,Fe/C ratio of 3 ∶1,air-water ratio of 5 ∶1 and retention time of 1.5 h,the removal rates of TN,NH+4-N,NO-3-N are 51.5%,70% and 50.94% respectively,when the influent TN,NH+4-N,NO-3-N and BOD5/COD are 823 mg/L,30 mg/L,793 mg/L and 0.1 respectively.更多还原