%0 Journal Article
%T Research on Sludge Toxicity Caused by DMF Biodegradation and Toxicity Spatial Distribution in Sludge Flocs<br>降解DMF引起污泥毒性及其毒性空间分布特性研究
%A HU Yuan-yuan
%A YANG N
%A DING Yi
%A XU Wen-lu
%A CHEN Xiu-rong
%A AI Qi-feng
%A CHEN Shan-ji
%A WANG Li-peng
%A HUANG Hua
%A <br>胡园园
%A 杨娜
%A 丁毅
%A 徐文璐
%A 陈秀荣
%A 艾奇峰
%A 陈善佳
%A 王利鹏
%A 黄华
%J 环境科学
%D 2013
%I 
%X The aerobic sequencing batch activated sludge system (SBR) was used to remove the toxic and refractory organic pollutant, N,N-dimethylformamide (DMF). The formation property and spatial distribution of the organic toxicity in sludge were studied. The operation parameters were controlled as follows: influent COD was about 300 mg·L-1, every DMF concentration phase lasted 30 d(40 mg·L-1, 80 mg·L-1, 120 mg·L-1), the SBR cycle lasted 12 h, and DO was 2.0-3.0 mg·L-1. The results showed that the sludge toxicity increased in the beginning and then decreased to a steady range at each DMF concentration phase; there was a positive correlation between the sludge toxicity and the initial DMF concentration; most of the sludge organic toxicity was caused by DMF biodegradation and existed in the inner extracellular polymeric substances (EPS) and intracellular section of sludge flocs.
%K N
%K N-dimethylformamide (DMF)
%K sequencing batch reactor (SBR)
%K organic toxicity of sludge
%K sludge acclimatization
%K spatial distribution of poisonous substances<br>N
%K N-二甲基甲酰胺(DMF)
%K 序批式活性污泥系统(SBR)
%K 污泥有机毒性
%K 污泥驯化
%K 毒性物质空间分布
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=FA4CA184ED44CF91ADF3E1E7760AB309&yid=FF7AA908D58E97FA&vid=339D79302DF62549&iid=E158A972A605785F&sid=196264D95F295743&eid=5A64531D29896B77&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=25