Investigation of the polyphosphate-accumulating organism population in the full-scale simultaneous chemical phosphorus r
- PDF / 1,706,327 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 77 Downloads / 151 Views
RESEARCH ARTICLE
Investigation of the polyphosphate-accumulating organism population in the full-scale simultaneous chemical phosphorus removal system Baogui Wang 1 & Erlong Jiao 2 & Yu Guo 1 & Lifang Zhang 2 & Qingan Meng 1 & Wei Zeng 1
&
Yongzhen Peng 1
Received: 17 January 2020 / Accepted: 26 June 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The simultaneous chemical phosphorus removal (SCPR) process has been widely applied in wastewater treatment plants (WWTPs) due to the high phosphorus removal efficiency through the synergy of biological and chemical phosphorus removal (BPR and CPR). However, phosphorus removal reagents could affect the bacterial community structure in the SCPR system and further affect the BPR process. The BPR phenotypes and community structures in the SCPR system, especially the population of polyphosphate-accumulating organisms (PAOs), are not completely clear. In order to clarify these problems, the phosphorus removal performance and the PAO population in a full-scale SCPR system were investigated. Results showed that diverse PAOs still existed in the SCPR system though the BPR phenotypes were not observed. However, the relative abundances of Accumulibacter and Tetrasphaera, the two most important genera of PAOs, were only 0.59% and 0.20%, respectively, while the relative abundances of Competibacter and Defluviicoccus, two genera of glycogen-accumulating organisms (GAOs), were as high as 5.77% and 1.28%, respectively. Batch tests showed that PAOs in the SCPR system still had a certain polyphosphate accumulating metabolic activity, which could gradually recover after stopping the addition of chemical reagents. This study provided a microbiological basis for the SCPR system to recover the enhanced biological phosphorus removal (EBPR) performance under suitable conditions, which could reduce the dosage of chemical reagents and the operational cost. Keywords Wastewater treatment plants (WWTPs) . Candidatus Accumulibacter . Polyphosphate-accumulating metabolism (PAM) . Glycogen-accumulating organisms (GAOs) . Candidatus Competibacter . Aluminum sulfate
Introduction The excessive discharge of nitrogen and phosphorus is the main reason leading to water eutrophication. Quantities of wastewater treatment plants (WWTPs) had been established Responsible editor: Ta Yeong Wu Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-09912-9) contains supplementary material, which is available to authorized users. * Wei Zeng [email protected] 1
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No.100 Pingleyuan, Chaoyang District, Beijing 100124, China
2
Beijing Drainage Group Co., Ltd., Beijing 100037, China
to prevent nitrogen and phosphorus from entering aquatic water systems (Zhang et al. 2016). For these two nutrients, reducing the phosphorus input into lakes possibly played a more importan
Data Loading...
