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引用本文:范成新,陈宇炜,杨龙元,孙越.太湖梅梁湾南部水体有机污染物降解表观动力学初步分析.湖泊科学,1998,10(4):48-52. DOI:10.18307/1998.0407
Fan Cheng-xin,Chen Yu-wei,Yang Long-yuan,Sun Yue.Preliminary Analysis on Apparent Dynamics of Organic Pollutants on the Decline in the South of Meiliang Bay, Taihu Lake. J. Lake Sci.1998,10(4):48-52. DOI:10.18307/1998.0407
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太湖梅梁湾南部水体有机污染物降解表观动力学初步分析
范成新, 陈宇炜, 杨龙元, 孙越
中国科学院南京地理与湖泊研究所, 南京 210008
摘要:
有机污染是太湖水质恶化的重要原因之-.本文在20℃和30℃恒温振荡条件下,应用化学反应动力学原理定量模拟和研究了太湖梅梁湾南部附近水体中,有机污染指标CODMn降解的-级反应过程.应用Arrenius系列公式,分别得到20℃和30℃下的降解速率常数(k20=0.01856d-1,k30=0.0364d-1、表观活化能(Eu=4.9×104J)及指前因子A.提出太湖梅梁湾南部水体COD衰减表达式为:Ct=C0·exp[-1.49×10e7-4.9×104/RTt].
关键词:  太湖梅梁湾  COD降解  表现动力学  速率常数
DOI:10.18307/1998.0407
分类号:
基金项目:中国科学院“九五”重点项目,KZ952-S1-220、KZ951-B1-205-02和KZ952-J1-212
Preliminary Analysis on Apparent Dynamics of Organic Pollutants on the Decline in the South of Meiliang Bay, Taihu Lake
Fan Cheng-xin, Chen Yu-wei, Yang Long-yuan, Sun Yue
Nanjing Institute of Geography and Limnologry, Chinese Academy of Sciences, 210008
Abstract:
The organic pollution is one of the important questions of the water quality deterioration in Taihu Lake. The natural degradation of COD,approximately representing the total organic pollutants, in the south of Meiliang Bay of the lake was mechanically studied and quantitatively simulated by means of the mechanism of chemical reactions. Under the conditions of constant temperature (20 C and 30 C) and uniform shaking, the one-order reaction process of COD degradation was quantitatively analyzed and simulated on the basis of Arrcnius equations. The rate constants of degradation (k2-0. 01856d-1, k30 = 0. 0364d-1) were calculatcd in 20 C and 30 C. The constants may increase by two times when the temperature increased 10C. As a result,the apparent active energy (Ea) and the factor before index (A) were estimated to be about 4.9 X 107J and 1. 49X107J,respectively. The formula of COD declining of the Meiliang Bay, Taihu Lake was made out:Ct= C0·exp[-1. 49 X 107e-4.9Xl04/RTt].
Key words:  Taihu Lake  COD degradation  apparent mechanism  rate constants
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