AF反应器对芳香族化合物反硝化降解特性研究

以苯、联苯和萘为模型化合物，研究了厌氧滤池（AF）反应器在反硝化及连续运行条件下对含这几种芳香族化合物模拟废水的处理效果，并以葡萄糖为补充碳源，考察了不同C/N对有机物反硝化降解特性的影响.结果表明，在长期连续流运行及反硝化条件下，AF反应器对废水中几种典型芳香族化合物具有良好地去除效果，当进水COD浓度约为1?000mg/L，苯、联苯和萘总浓度为60mg/L时，出水COD去除率可达到90％，芳香族化合物的去除率可达到84％.苯比萘和联苯更易于反硝化降解.C/N在5～30范围内，苯的降解率均达到90%，C/N对苯的降解没有明显影响；COD、萘和联苯去除率受C/N影响较大，C/N为15时，COD、萘和联苯去除率最大，分别为90%、78%和82%.

Study on the Treatment of Aromatic Hydrocarbon Containing Wastewater by an Anaerobic Filter Reactor Under Denitrifying Condition

With benzene, naphthalene and biphenyl as the model aromatic hydrocarbon, the treatment of aromatic hydrocarbon containing wastewater by an anaerobic filter (AF) reactor operated in continuous mode and under denitrifying condition were conducted. With glucose as the supplemented carbon, the influence of C/N ratio on the degradation of organic compounds was also investigated. Results showed that the AF reactor could degrade these aromatic hydrocarbons effectively under above mentioned conditions. When the influent COD concentration was 1 000 mg/L, and benzene, naphthalene and biphenyl concentration was 60 mg/L, the removal efficiency for COD and aromatic hydrocarbons was 90% and 84%, respectively. Benzene was more easily degraded than naphthalene and biphenyl under denitrifying condition. When C/N was in the range 5 - 30, benzene removal percentage was always at about 90% , and C/N ratio did not have obvious effect on the degradation of benzene. The degradation of naphthalene and biphenyl and total COD was greatly influenced by C/N. When C/N was 15, the highest removal percentage was achieved and it was 90%, 78% and 82% for COD, naphthalene and biphenyl, respectively.