%0 Journal Article
%T Inhibition and recovery of nitrification in treating real coal gasification wastewater with moving bed biofilm reactor<br>
%A Huiqiang Li
%A Hongjun Han
%A Maoan Du
%A Wei Wang
%A <br>
%J 环境科学学报(英文版)
%D 2011
%I 
%X Moving bed biofilm reactor (MBBR) was used to treat real coal gasification wastewater. Nitrification of the MBBR was inhibited almost completely during start-up period. Sudden increase of influent total NH3 concentration was the main factor inducing nitrification inhibition. Increasing DO concentration in the bulk liquid (from 2 to 3 mg/L) had little e ect on nitrification recovery. Nitrification of the MBBR recovered partially by the addition of nitrifying sludge into the reactor and almost ceased within 5 days. Nitrification ratio of the MBBR achieved 65% within 12 days by increasing dilute ratio of the influent wastewater with tap water. The ratio of nitrification decreased to 25% when influent COD concentration increased from 650 to 1000 mg/L after nitrification recovery and recovered 70% for another 4 days.
%K moving bed biofilm reactor
%K coal gasification wastewater
%K nitrification inhibition
%K nitrification recovery<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=1A47B996F4CA53AC57AAC60124B136BC&yid=9377ED8094509821&vid=EA389574707BDED3&iid=E158A972A605785F&sid=6D6B4A516C7DB6EE&eid=F6467E7C54ED952D&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=27