%0 Journal Article
%T Study on 3-Nitrophenol Wastewater Treatment in UASB<br>上流式厌氧污泥床反应器处理3-硝基酚废水研究
%A LIU Wei-gang
%A SHE Zong-lian
%A YU Jian-wei
%A GAO Meng-chun
%A <br>刘维岗
%A 佘宗莲
%A 于建伟
%A 高孟春
%J 环境科学
%D 2006
%I 
%X Characteristics of anaerobic granules before and after acclimation, removal efficiencies of 3-nitrophenol (3-NP) and performance of 3-NP wastewater treatment were investigated in a lab-scale upflow anaerobic sludge bed (UASB). The results showed that granular sludge acclimatized to 3-NP rapidly during acclimation. Using SEM, the filamentous bacteria was the predominant bacteria on the surface of granules. Throughout the study of 3-NP wastewater anaerobic degradation, hydraulic retention time (HRT) and input COD concentration were kept constant as 26 h and 2 500 mg/L, respectively. While 3-NP concentrations increasing from 20 mg/L to 250 mg/L gradually, COD removal decreased from 95.2% to 85.1% and 3-NP removal efficiencies were always more than 99%. 3-AP was found to be the major intermediate during the degradation of 3-NP. Out of the total input of 3-NP concentration, on molar basis, about 58.7% - 111.9% of 3-NP was recovered in the form of 3-AP. With increasing 3-NP concentration, the variations of gas production were minimal. The minimum methane percentage was 65% and the maximum was 74%.
%K UASB
%K 3-nitrophenol
%K granular sludge
%K acclimation
%K anaerobic degradation<br>UASB
%K 3-硝基酚
%K 颗粒污泥
%K 驯化
%K 厌氧降解
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=75E02DF219808C10&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=708DD6B15D2464E8&sid=62486607C4A4CE2B&eid=E5B21C35C563F998&journal_id=0250-3301&journal_name=环境科学&referenced_num=2&reference_num=10