活性污泥微生物对苯胺废水的降解研究Study on Degradation of Aniline by Activated Sludge Microorganism
王群,王福浩,郭姿璇,佘宗莲
摘要(Abstract):
利用序批式反应器(SBR)对活性污泥进行培养和驯化,分别取未经驯化和经盐驯化后的活性污泥,通过批量实验研究了两种污泥中微生物对苯胺的降解效果。SBR运行结果表明,活性污泥经过驯化适应了10gNaCl/L后,取得较高的COD、NH_4~+-N和TN的去除率,分别为86.5%、97.6%和96.4%。批量实验结果表明,苯胺降解速率随初始苯胺浓度的升高逐渐增加,且苯胺降解速率在未驯化污泥无盐条件下高于盐驯化污泥加盐条件,分别为2.63~21.31和2.06~12.08mg/(gVSS×h);未投加苯胺时,COD和NH_4~+-N的降解速率是投加苯胺时的5.2~19.3和2.5~4.2倍,且未驯化污泥无盐条件下COD和NH_4~+-N的降解速率是盐驯化污泥加盐条件的2.4和1.5倍;投加苯胺后,COD的降解速率随苯胺浓度的升高逐渐增加;实验结束时,未驯化污泥无盐条件下只存在NO-3-N,而盐驯化污泥加盐条件下同时存在NO-2-N和NO-3-N。
关键词(KeyWords): SBR;盐度;污泥驯化;苯胺;降解速率
基金项目(Foundation): 国家水体污染控制与治理科技重大专项(2014ZX07203-008)资助~~
作者(Author): 王群,王福浩,郭姿璇,佘宗莲
DOI: 10.16441/j.cnki.hdxb.20170029
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