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立式连续流反应器中的硝化与反硝化除磷

Nitrification and denitrifying phosphorus removal in an upright continuous flow reactor.

作者信息

Reza Maryam, Alvarez Cuenca Manuel

机构信息

Chemical Engineering Department, University of Waterloo, 200 University Ave W, Waterloo, ON, Canada N2L 3G1 E-mail:

Chemical Engineering Department, Ryerson University, 350 Victoria St, Toronto, ON M5B 2K3, Canada.

出版信息

Water Sci Technol. 2016;73(9):2093-100. doi: 10.2166/wst.2016.057.

Abstract

Simultaneous nitrification and denitrifying phosphorus removal was achieved in a single-sludge continuous flow bioreactor. The upright bioreactor was aligned with a biomass fermenter (BF) and operated continuously for over 350 days. This study revealed that unknown bacteria of the Saprospiraceae class may have been responsible for the successful nutrient removal in this bioreactor. The successive anoxic-aerobic stages of the bioreactor with upright alignment along with a 60 L BF created a unique ecosystem for the growth of nitrifier, denitrifiers, phosphorus accumulating organisms and denitrifying phosphorus accumulating organisms. Furthermore, total nitrogen to chemical oxygen demand (COD) ratio and total phosphorus to COD ratio of 0.6 and 0.034, respectively, confirmed the comparative advantages of this advanced nutrient removal process relative to both sequencing batch reactors and activated sludge processes. The process yielded 95% nitrogen removal and over 90% phosphorus removal efficiencies.

摘要

在单污泥连续流生物反应器中实现了同步硝化反硝化除磷。立式生物反应器与生物质发酵罐(BF)对齐,并连续运行超过350天。该研究表明,腐螺旋菌科的未知细菌可能是该生物反应器成功去除营养物的原因。立式排列的生物反应器的连续缺氧-好氧阶段以及60升的BF为硝化菌、反硝化菌、聚磷菌和反硝化聚磷菌的生长创造了独特的生态系统。此外,总氮与化学需氧量(COD)的比率以及总磷与COD的比率分别为0.6和0.034,证实了这种先进的营养物去除工艺相对于序批式反应器和活性污泥工艺的比较优势。该工艺实现了95%的脱氮效率和超过90%的除磷效率。

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