【摘要】 废液中含有大量盐分会不利于废液的焚烧,焚烧前对其进行预处理十分必要。文章通过蒸馏法研究了含盐苯胺模拟废液的焚烧前预处理过程。结果表明:COD的去除率和有机物析出率与氯化钠的初始质量浓度有关,当氯化钠的初始质量浓度为20g/L时COD的去除率最高;有机物析出率随氯化钠初始质量浓度的增加而增加,当氯化钠初始质量浓度达到40g/L后,有机物的析出率大约保持在48%不再变化;蒸馏过程中钠离子的去除率稳定在98%左右;钠离子和氯离子不是以氯化钠的形式析出,而是以各自离子形态析出。更多还原

【Abstract】 Aniline saline wastewater with a lot of salts is not conducive to the incineration treatment and the pretreatment before incineration is necessary.The pretreatment process of aniline saline wastewater by distillation before incineration was studied.The results showed that the COD removal ratio and the organic precipitation ratio related to the initial mass concentration of NaCl.The COD removal ratio reached the highest when the initial mass concentration of NaCl is 20 g/L;the organic precipitation ratio increased with the addition of the initial mass concentration of NaCl,the organic precipitation ratio could reach 48% when the initial mass concentration of NaCl is 40 g/L,then no longer changed;the desalination ratio of wastewater reached 98% stably during distillation process;and both ions of sodium and chlorine were separated out not in sodium chloride but in ion-state during distillation process.更多还原