UASB反应器反硝化处理对氨基二苯胺生产废水

采用UASB工艺处理橡胶助剂对氨基二苯胺（RT培司）生产废水。实验结果表明：UASB启动初期（1~16 d），COD去除率由60.8%降至24.2% ，TOC去除率由75.6%降至37.2%；UASB运行16 ~50 d，COD去除率逐渐提高；运行50 d时COD去除率为69.4%，TOC去除率高达90.0%。在进水COD负荷不超过6 kg/（m³·d）的条件下，UASB对COD的去除率为42.7%~69.4%，TOC去除率为58.0%~90.0%，NO_{3^--N去除率接近100%。本实验最佳进水TOC 与TN 比为2.0，UASB进水pH可调节为4.5左右，反应温度为18~34 ℃时对UASB反硝化处理效果影响不大。UASB对苯系化合物的去除率从高至低顺序为对硝基酚>苯酚>苯胺。}

Treatment of p-Aminodiphenylamine Production Wastewater by Denitrification in UASB Reactor

The p-Aminodiphenylamine(i.e. RT base，a kind of rubber auxiliary) production wastewater was treated by UASB process. The experimental results show that：At the start-up stage (1-16 d)，the removal rate of COD is decreased from 60.8% to 24.2%，and that of TOC from 75.6% to 37.2%；During the 16-50 d of running，the COD removal rate is increased gradually；After 50 d of running，the removal rates of COD and TOC are 69.4% and 90.0% respectively. Under the conditions of influent COD volume load less than 6 kg/(m³·d)，the removal rates of COD，TOC and NO₃^--N are 42.7%-69.4%，58.0%-90.0% and nearly 100% respectively. When the ratio of TOC to TN is 2.0 and the influent pH is adjusted to 4.5，the reaction temperature(in the range of 18-34 ℃) has little effects on the treatment. The removal rates of the benzene compounds follow the order of paranitrophenol >phenol>anilin.