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活性炭和沸石对氨氮的吸附特性及生物再生
Authors
付荣恕
任宗明
+3 more
孔强
田琳
苗明升
Publication date
1 January 2012
Publisher
Abstract
采用活性炭和沸石作为吸附材料;分别考察了这两种吸附材料对水体中氨氮的吸附特性及其生物再生性能。实验结果表明;活性炭和沸石对水体中氨氮的等温吸附符合Freundlich等温式;其拟合度分别为0.9783和0.9303;静态吸附结果表明活性炭和沸石均具有较好的氨氮吸附性能;24 h内沸石对氨氮的吸附能力为1.27 mg/g;高于活性炭的0.53 mg/g;动态吸附中沸石达到吸附饱和的时间为96 h;较活性炭达到吸附饱和的时间长;沸石显示出作为氨氮吸附剂的优越性;活性炭和沸石经过96 h的生物再生后吸附性能获得一定程度的再生;出水中氨氮浓度比未进行生物再生前分别降低17.31 mg/L和8.32 mg/L;且都在表面形成了稳定的生物膜
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Last time updated on 24/06/2021