Application of the off-gas method to the measurement of oxygen transfer in biofilters

被引：17

作者：

Gillot, S

Kies, F

Amiel, C

Roustan, M

Héduit, A

机构：

[1] Irstea, F-92163 Antony, France

[2] INSA, LIPE, F-31077 Toulouse, France

来源：

CHEMICAL ENGINEERING SCIENCE | 2005年 / 60卷 / 22期

关键词：

aeration; biofilter; clean water; oxygen mass transfer; sulphite oxidation;

D O I：

10.1016/j.ces.2005.04.056

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To determine the oxygen mass transfer in clean water in biofilters, a method based on the follow up of the oxygen fraction in the off gas during the oxidation of sulphite in excess has been evaluated and applied to a pilot-scale unit (250 L, superficial gas velocity from 0 to 5.6 x 10(-3) m(N) s(-1), superficial liquid velocity from 0 to 2.5 x 10(-3) m s(-1)). Tests performed on a two-phase reactor showed that, without any cobalt addition, standard oxygen transfer efficiencies (SOTE) obtained from the proposed method are not statistically different from those issued from the standardised method. A relationship has been proposed to express SOTE values as a function of the conductivity, and the influence of the gas and liquid velocities on SOTE and k(L)a has been investigated. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：6336 / 6345

页数：10

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