Phosphorus activation from phosphorus-saturated substrates by constructed wetlands plants: Performance and mechanism

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-02-11 DOI:10.1016/j.jwpe.2025.107219

Shuyi Chu , Furong Zhao , Yu Liu , Jibo Xiao , Xiao Ma , Zhiyong Yan

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引用次数: 0

Abstract

One of the key challenges in operating constructed wetlands (CWs) is phosphorus-saturated substrates that markedly impacts their normal functioning and pollutant removal capabilities. This study aimed to investigate the potential of CW plants in activating phosphorus from phosphorus-saturated substrates under various treatments. Results showed that the inorganic phosphorus (IP) content in a substrate planted with Canna indica (M group) decreased by 48.73 % and 74.82 % after 90 (stage 1) and 150 days (stage 2), respectively. When nitrogen, biochar, and plant litter were added in the substrate, biomass and root growth significantly increased. At the end of stage 2, substrates in MYN (nitrogen addition groups) and MSW (plant litter addition groups) treatments had a significantly lower IP than that in the M treatment. Among the four bacteria isolated, Curtobacterium pusillum had the higher phosphate-solubilizing potential. Inoculation of the substrate with C. pusillum in the M group increased the relative abundance of Streptophyta, Burkholderia, Massilia, and Arthrobacter and residual phosphorus activation by 57.16 %. These results indicate a promising potential of CW plants in terms of phosphorus activation from phosphorus-saturated substrates, subsequently facilitating the sustainable development of CWs.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies