Nitrogen removal via nitrite in a sequencing batch reactor treating sanitary landfill leachate

被引：78

作者：

Spagni, Alessandro ^{[1
]}

Marsili-Libelli, Stefano ^{[2
]}

机构：

[1] ENEA, Italian Natl Agcy New Technol Energy & Environm, Dept Environm, Water Resource Management Sect, I-40129 Bologna, Italy

[2] Univ Florence, Dept Syst & Comp, I-50139 Florence, Italy

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 02期

关键词：

Nitrite route; Ammonium rich wastewater; Fuzzy logic; Biological nutrient removal; WASTE-WATER TREATMENT; REAL-TIME CONTROL; AEROBIC TREATMENT; ACTIVATED-SLUDGE; FREE AMMONIA; SYSTEM; SBR; NITRIFICATION; DENITRITATION; ACCUMULATION;

D O I：

10.1016/j.biortech.2008.06.064

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The present paper reports the results of the application of a control system, based on artificial intelligence concepts, for the automation of a bench-scale SBR treating leachate generated in old landfills. Attention was given to the nitritation and denitritation processes in order to enhance the nitrogen removal efficiency. Nitrification and nitrogen removal were usually higher than 98% and 95%, respectively, whereas COD removal was approximately 20-30% due to the low biodegradability of organic matter in the leachate from old landfills; therefore, external COD was added to accomplish the denitrification process. Adjusting the length of the oxic phase, almost complete inhibition of the nitrite oxidizing organisms was observed. The results confirm the effectiveness of the nitrite route for nitrogen removal optimisation in leachate treatment. A significant saving of approximately 35% in external COD addition was achieved. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：609 / 614

页数：6

共 36 条

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