Oxygen transfer rate estimation in oxidation ditches from clean water measurements

被引：20

作者：

Abusam, A

Keesman, KJ

Meinema, K

Van Straten, G

机构：

[1] Univ Wageningen & Res Ctr, Dept Agr Environm & Syst Technol, Syst & Control Grp, NL-6703 HD Wageningen, Netherlands

[2] DHV Water BV, NL-3800 AL Amersfoort, Netherlands

来源：

WATER RESEARCH | 2001年 / 35卷 / 08期

关键词：

oxygen transfer rate; aeration; K(L)a; oxidation ditch; carrousel;

D O I：

10.1016/S0043-1354(00)00451-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Standard methods for the determination of oxygen transfer rate are based on assumptions that are not valid for oxidation ditches. This paper presents a realistic and simple new method to be used in the estimation of oxygen transfer rate in oxidation ditches from clean water measurements. The new method uses a loop-of-CSTRs model. which can he easily incorporated within control algorithms. for modelling oxidation ditches. Further. this method assumes zero oxygen transfer rates (K(L)a) in the unaerated CSTRs. Application of a formal estimation procedure to real data revealed that the aeration constant (k = K(L)aV(A).. where V-A is the volume of the aerated CSTR) can be determined significantly more accurately than K(L)a and Cb Therefore. the new method estimates X instead of K(L)a. From application to real data, this method proved to be more accurate than the commonly used Dutch standard method (STORA. 1980). (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2058 / 2064

页数：7