Lan Yang , Kai Chen , Yanxia Ma , Long Chen , Aiyi Wang , Farhan Hafeez , Jiabin Wang , Junyu Zheng , Zhuo Li , Hongtao Zhu
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引用次数: 0
Abstract
Tetracycline (TC) in treated wastewater poses considerable environmental risks. Constructed wetlands (CWs) are crucial for mitigating TC contamination and enhancing wastewater treatment. This study evaluated the performance of three mesocosm CWs, each planted with different emergent macrophytes, under exposure to 1 mg/L TC. Results revealed notable improvements in feeding tailwater quality, with removal rates of total nitrogen, total phosphorus, and chemical oxygen demand ranging from 30 to 40 %, 80–85 %, and 20–25 %, respectively. Nitrate removal primarily occurred through plant absorption. After 81 days, Typha orientalis C. Presl in CW-B achieved the highest biomass (1962.9 g/m2), demonstrating superior carbon sequestration potential compared to Canna indica L. and Phragmites australis. The rhizosphere bacteriome of Phragmites australis and Typha orientalis C. Presl showed greater efficacy in removing NH4+-N, while that of Canna indica L. was more effective in removing NO3−-N, TN, and TP. These findings highlight the pivotal role of CW vegetation in contaminant removal and carbon sequestration, emphasizing the synergistic interactions among substrate, vegetation, and rhizosphere microbiota in treating secondary effluent under TC stress.
处理过的废水中的四环素（TC）具有相当大的环境风险。人工湿地（CWs）是缓解TC污染和加强废水处理的关键。本研究评价了三种不同苗生植物的中生CWs在1 mg/L TC处理下的表现。结果表明：饲喂尾水水质得到显著改善，总氮、总磷和化学需氧量去除率分别为30 ~ 40%、80 ~ 85%和20 ~ 25%。硝酸盐的去除主要通过植物吸收进行。结果表明，81 d后，黄叶霉（Typha orientalis C. Presl）生物量最高（1962.9 g/m2），固碳潜力优于美人蕉（美人蕉）和芦苇（Phragmites australis）。芦苇和Typha orientalis C. Presl根际菌群对NH4+-N的去除效果较好，美人蕉根际菌群对NO3−-N、TN和TP的去除效果较好。这些研究结果强调了CW植被在去除污染物和固碳中的关键作用，强调了基质、植被和根际微生物群在处理TC胁迫下的二级出水中的协同作用。
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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
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