Steady state analysis of the coupling aerator and secondary settling tank in activated sludge process

被引:10
作者
Cho, SH
Chang, HN
Prost, C
机构
[1] KOREA ADV INST SCI & TECHNOL,YUSUNG GU,TAEJON 305701,SOUTH KOREA
[2] ECOLE NATL SUPER IND CHIM,INST NATL POLYTECH LORRAINE,CNRS,LAB SCI GENIE CHIM,F-54001 NANCY,FRANCE
关键词
activated sludge process; wastewater treatment; control; limit flux; response surface; isoresponse curve; acceptable operating zone;
D O I
10.1016/S0043-1354(96)00158-3
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The steady state analysis of coupling the function of aerator and secondary settling tank in activated sludge process for wastewater treatment is carried out to obtain appropriate responses of output variables and to decide optimum operating parameters. To consider the effect of the secondary settling tank, limit flux theory is applied and the aerator is assumed to be a continuous flow stirred tank reactor. By using sludge recycle ratio and sludge waste ratio as the operating parameters, the responses of the output variables - biomass concentration in aerator, dissolved pollutant and solid concentration in effluent - are represented as response surfaces and isoresponse curves. Acceptable operating zone can be obtained from the curves and optimum parameters can be determined. Coupling the function of aerator and secondary settling tank is important to consider the appropriate control of an activated sludge process. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:2601 / 2608
页数:8
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