【摘要】 研究了用湿式氧化法处理染料中间体Ｈ－酸废母液。在２００－２５０℃，Ｐｏ２＝１－３ＭＰａ下，Ｈ－酸的湿式氧化反应可分为２个阶段，最初１０ｍｉｎ为快反应段，ＣＯＤ快速下降，ＵＶ／可见光吸光度先急剧升高，之后快速降低；慢反应段延续到３０ｍｉｎ，ＣＯＤ和吸光度缓慢下降，其后变化不大。经过温式氧化处理之后，可生化性大幅度改善，在１６０℃，充氧３ＭＰａ，反应１ｈ，可使１０ｇ／Ｌ的Ｈ－酸液的ＣＯＤ降低５０％，ＢＯＤ５／ＣＯＤ由３．４％升高到３３．３％。反应后尾气中不含ＳＯ２，ＮＯｘ类有害气体。更多还原

【Abstract】 Under the condition of reaction temperatures of 200- 250℃,initial oxygen partial pressures of 1-3 MPa,the wet air oxidation(WAO) of H-acid has 2-step process,including rapid reaction step,in which during the first 10 minutes after the beginning of the reaction COD is decreased rapidly,and UV/Vis.absorbance is increased drastically at first and then reduced rapidly,and slow reaction step,in which, both COD and UV/Vis.absorbance are decreased slowly during about 20 minutes.WAO treatment can improve biodegradability of H-acid significantly.After 1 hour reaction carried out at 160℃ and 3 MPa initial oxygen pressure,COD was decreased by 50%,and the BOD5/COD ratio of 10 g/L H-acid solution was increased from 3.4% to 33.3%.The offgas from the WAO treatment of H-acid contains undetectable amount of SO2 and nitrogen oxides.更多还原