CONTROL OF BNR PROCESSES BY REGULATION OF THE VFA/M RATIO

被引:11
作者
ARMIGER, WB
LEE, GJ
SCHWEGLER, BR
MAH, TJ
机构
[1] WALT DISNEY IMAGINEERING,GLENDALE,CA
[2] UNIV BRITISH COLUMBIA,VANCOUVER V6T 1W5,BC,CANADA
关键词
PROCESS CONTROL; BIOLOGICAL NUTRIENT REMOVAL (BNR); LOAD BALANCING; NADH; DIURNAL VARIATION; LOAD EQUALIZATION;
D O I
10.2166/wst.1993.0670
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Diurnal variation is characteristic of nearly all POTWs currently in operation. Equalizing the organic load to the process can significantly benefit the performance of the biological treatment process. The potential benefits of flow equalization have been recognized for over 20 yews, although subsequent work has not been able to demonstrate reliable engineering designs to capitalize on these theoretical benefits. During the past decade, stricter environmental regulations have increased the interest and investment in nutrient removal processes. The successful development of Biological Nutrient Removal (BNR) treatment processes has accelerated this process. The data in this paper demonstrate that the ability to accurately measure and trick biological reactions is crucial to the ability to equalize plant loadings. It is important to reiterate, in this regard, that the ''bioreactor'' which carries out the treatment reactions is a living cell and not a concrete tank. This manuscript presents new technology for the control of BNR treatment plants based upon direct measurements of cell metabolic activity, and presents results of preliminary experiments to control the waste load to biomass ratio independent of hydraulic flow fluctuations.
引用
收藏
页码:303 / 314
页数:12
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