在序批式反应器（SBR）中应用硝化-反硝化工艺监测氮的去除。

Monitoring the removal of nitrogen by applying a nitrification-denitrification process in a Sequencing Batch Reactor (SBR).

机构信息

University of Antioquia, Laboratory Diagnostics and Pollution Control (GDCON), Medellin, Colombia.

出版信息

Bioresour Technol. 2011 Feb;102(3):2316-21. doi: 10.1016/j.biortech.2010.10.082. Epub 2010 Oct 25.

DOI:10.1016/j.biortech.2010.10.082

Abstract

In this study the evaluation of nitrogen removal in wastewater from a meat products processing company was performed, using a Sequencing Batch Reactor (SBR) at pilot scale. The phases of the SBR operation were: filling, reaction (aeration and intermittent anoxia), sedimentation and discharge. In each of these phases analyses of ammonium (NH(4)(+)), nitrite (NO(2)(-)), nitrate (NO(3)(-)), pH and dissolved oxygen (DO) were carried out to monitor the process of nitrification-denitrification. The results showed that stage IV had the best performance (2.49 g COD(F)/Ld and 1.02 g NH(4)(+)-N/Ld) with a NH(4)(+)-N removal of 71%. The transformation of much of the NH(4)(+)-N to gaseous nitrogen was confirmed, with the concentration of NO(2)(-)-N and NO(3)(-)-N increasing during the reaction phase but decreasing in the effluent due to its transformation to gaseous nitrogen.

摘要

本研究采用序批式反应器（SBR）在中试规模下对一家肉类加工公司废水的脱氮效果进行了评估。SBR 的操作阶段包括：进水、反应（曝气和间歇缺氧）、沉淀和排水。在每个阶段都对氨氮（NH(4)(+)）、亚硝酸盐氮（NO(2)(-)）、硝酸盐氮（NO(3)(-)）、pH 和溶解氧（DO）进行分析，以监测硝化-反硝化过程。结果表明，第四阶段的性能最好（2.49 g COD(F)/Ld 和 1.02 g NH(4)(+)-N/Ld），NH(4)(+)-N 去除率为 71%。确认了大部分 NH(4)(+)-N 转化为气态氮，反应阶段 NO(2)(-) -N 和 NO(3)(-) -N 的浓度增加，但由于其转化为气态氮，出水中的浓度降低。