OPTIMIZATION OF A NITROGEN-REMOVING BIOLOGICAL WASTE-WATER TREATMENT-PLANT USING ONLINE MEASUREMENTS

被引：23

作者：

SORENSEN, J

THORNBERG, DE

NIELSEN, MK

机构：

[1] Office of the City Manager, Orla Lehmanns Alle 3, DK-8100 Arhus C

来源：

WATER ENVIRONMENT RESEARCH | 1994年 / 66卷 / 03期

关键词：

DENITRIFICATION; NITRIFICATION; NUTRIENT REMOVAL; OPERATION; PROCESS CONTROL;

D O I：

10.2175/WER.66.3.9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The installation of continuous on-line measurements of ammonium and nitrate in the aeration tanks of a nitrogen removing activated sludge plant has reduced the nitrate amount in the effluent by 60%. This corresponds to a drop in the average total nitrogen concentration in the effluent from 7.8 mg/L to 5.1 mg/L. The operation of the nitrogen removal process and thereby the effluent concentrations has become more stable. By combining operational changes in the biosorption with on-line control of the process, it is possible to maintain full and stable denitrification at a BOD/N ratio of 3 to 4 without the use of any external carbon source, despite great variations in the loading of the plant. Monitoring of the microscopic characteristics of the sludge can be closely correlated with macroscopic characteristics such as sludge volume index.

引用

页码：236 / 242

页数：7