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Microplastics shaped performance, microbial ecology and community assembly in simultaneous nitrification, denitrification and phosphorus removal process.
Wu, Tong; Ding, Jie; Zhao, Ying-Jun; Ding, Lan; Zang, Yani; Sun, Han-Jun; Zhong, Le; Pang, Ji-Wei; Li, Yan; Ren, Nan-Qi; Yang, Shan-Shan.
Afiliação
  • Wu T; Department of Analytical Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Ding J; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Zhao YJ; Zhe Jiang University of Technology Engineering Design Group CO., Ltd, China.
  • Ding L; Department of Analytical Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China. Electronic address: dinglan@jlu.edu.cn.
  • Zang Y; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Sun HJ; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Zhong L; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Pang JW; China Energy Conservation and Environmental Protection Group, CECEP Digital Technology Co., Ltd., Beijing 100096, China.
  • Li Y; School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
  • Ren NQ; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
  • Yang SS; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: shanshanyang@hit.edu.cn.
Sci Total Environ ; 929: 172651, 2024 Jun 15.
Article em En | MEDLINE | ID: mdl-38653406
ABSTRACT
The widespread use of microplastics (MPs) has led to an increase in their discharge to wastewater treatment plants. However, the knowledge of impact of MPs on macro-performance and micro-ecology in simultaneous nitrification, denitrification, and phosphorus removal (SNDPR) systems is limited, hampering the understanding of potential risks posed by MPs. This study firstly comprehensively investigated the performance, species interactions, and community assembly under polystyrene (PS) and polyvinyl chloride (PVC) exposure in SNDPR systems. The results showed under PS (1, 10 mg/L) and PVC (1, 10 mg/L) exposure, total nitrogen removal was reduced by 3.38-10.15 %. PS and PVC restrained the specific rates of nitrite and nitrate reduction (SNIRR, SNRR), as well as the activities of nitrite and nitrate reductase enzymes (NIR, NR). The specific ammonia oxidation rate (SAOR) and activity of ammonia oxidase enzyme (AMO) were reduced only at 10 mg/L PVC. PS and PVC enhanced the size of co-occurrence networks, niche breadth, and number of key species while decreasing microbial cooperation by 5.85-13.48 %. Heterogeneous selection dominated microbial community assembly, and PS and PVC strengthened the contribution of stochastic processes. PICRUSt prediction further revealed some important pathways were blocked by PS and PVC. Together, the reduced TN removal under PS and PVC exposure can be attributed to the inhibition of SAOR, SNRR, and SNIRR, the restrained activities of NIR, NR, and AMO, the changes in species interactions and community assembly mechanisms, and the suppression of some essential metabolic pathways. This paper offers a new perspective on comprehending the effects of MPs on SNDPR systems.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Poluentes Químicos da Água / Eliminação de Resíduos Líquidos / Desnitrificação / Nitrificação / Microplásticos Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Poluentes Químicos da Água / Eliminação de Resíduos Líquidos / Desnitrificação / Nitrificação / Microplásticos Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China