生物除磷系统中聚磷菌和糖原积累菌之间的竞争——温度的影响

Competition between polyphosphate- and glycogen-accumulating organisms in biological phosphorus removal systems--effect of temperature.

作者信息

Whang L M, Park J K

机构信息

Department of Civil & Environmental Engineering, University of Wisconsin-Madison, 53706 USA.

出版信息

Water Sci Technol. 2002;46(1-2):191-4.

PMID:12216623

Abstract

This study demonstrated that temperature is an important factor in determining the outcome of competition between polyphosphate-accumulating organisms (PAOs) and glycogen-accumulating non-poly-P organisms (GAOs) and the resultant stability of enhanced biological phosphorus removal (EBPR) systems. At 20 degrees C and a 10-day sludge age, PAOs were dominant in the anaerobic/aerobic (A/O) SBR, however, at 30 degrees C and a 10-day sludge age, GAOs were dominant in the A/O SBR. For kinetic batch studies, the anaerobic specific acetate uptake rate of GAO-dominated sludge (1.34 x 10(-3) mg C/mg VSS x minute) was higher than the rate of PAO-dominated sludge (0.89 x 10(-3) mg C/mg VSS x minute) at 30 degrees C, leading to the eventual failure of EBPR processes at high temperatures.

摘要

本研究表明，温度是决定聚磷菌（PAOs）与糖原积累性非聚磷菌（GAOs）之间竞争结果以及强化生物除磷（EBPR）系统最终稳定性的重要因素。在20℃和10天污泥龄条件下，PAOs在厌氧/好氧（A/O）序批式反应器（SBR）中占主导地位，然而，在30℃和10天污泥龄条件下，GAOs在A/O SBR中占主导地位。对于动力学批次研究，在30℃时，GAO主导的污泥的厌氧特定乙酸盐摄取速率（1.34×10⁻³mg C/mg VSS×分钟）高于PAO主导的污泥的速率（0.89×10⁻³mg C/mg VSS×分钟），导致高温下EBPR工艺最终失效。