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Volume 9
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10.3390/app9061126
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Article

The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity

by
Chen-Chiang Chou
,
Chih-Chi Yang
,
Meng-Shan Lu
,
Li-Yuan Hu
,
Ku-Fan Chen
and
Yung-Pin Tsai
*
Department of Civil Engineering, National Chi Nan University, 1, University Rd., Puli, Nantou 54561, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(6), 1126; https://doi.org/10.3390/app9061126
Submission received: 28 February 2019 / Revised: 11 March 2019 / Accepted: 15 March 2019 / Published: 17 March 2019
(This article belongs to the Special Issue Water Decontamination: Wastewater, Stormwater, Agricultural Drainage, and Hazardous Substances Treatment)
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Abstract

The purpose of this study was to study how temperature variation affects the tolerance of phosphorus accumulating organisms (PAOs) in a toxic environment. To exclude the interference of glycogen accumulating organisms (GAOs), shock loading experiments were conducted to study the effect of Cu(II) toxicity on the metabolisms of PAOs in 10, 20, and 30 °C conditions. The experimental data showed that the temperature effects on aerobic phosphorus uptake, PHA degradation, and glycogen synthesis were remarkable in the presence of Cu(II). Nevertheless, insignificant effects on anaerobic phosphorus release and PHA synthesis were found. The largest inhibition of PAO metabolism occurred in the low temperature case (10 °C). This study also experimentally demonstrated the loss of PAO metabolic ability in the subsequent aerobic stage, after the anaerobic stage. The presence of Cu(II) toxicity mainly resulted from the inhibition of biochemical reactions in the aerobic stage, and it was irrelevant to the inhibition of previous anaerobic metabolisms.
Keywords: polyhydroxyalkanoates (PHAs); copper ion; phosphorus removal; phosphorus accumulating organisms (PAO); temperature polyhydroxyalkanoates (PHAs); copper ion; phosphorus removal; phosphorus accumulating organisms (PAO); temperature

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MDPI and ACS Style

Chou, C.-C.; Yang, C.-C.; Lu, M.-S.; Hu, L.-Y.; Chen, K.-F.; Tsai, Y.-P. The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity. Appl. Sci. 2019, 9, 1126. https://doi.org/10.3390/app9061126

AMA Style

Chou C-C, Yang C-C, Lu M-S, Hu L-Y, Chen K-F, Tsai Y-P. The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity. Applied Sciences. 2019; 9(6):1126. https://doi.org/10.3390/app9061126

Chicago/Turabian Style

Chou, Chen-Chiang, Chih-Chi Yang, Meng-Shan Lu, Li-Yuan Hu, Ku-Fan Chen, and Yung-Pin Tsai. 2019. "The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity" Applied Sciences 9, no. 6: 1126. https://doi.org/10.3390/app9061126

APA Style

Chou, C.-C., Yang, C.-C., Lu, M.-S., Hu, L.-Y., Chen, K.-F., & Tsai, Y.-P. (2019). The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity. Applied Sciences, 9(6), 1126. https://doi.org/10.3390/app9061126

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