人工湿地-淹没植被复合生态系统改善中试水库水质及水生生态系统研究

IF 6.7 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Ai Chen , Dan Qu , Yongze Liu , Wenhui Li
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引用次数: 0

摘要

为改善再生水水质,恢复沙河水库处理后再生水的水生生态系统,构建了碳释放池-人工湿地-氧化池(PWP) +沉水植物林的中试规模。在截流、沉淀、硝化和反硝化等物理、化学和微生物过程的共同作用下,PWP-macrophyte系统对总氮(TN)、NH4+-N、NO3−-N、总磷(TP)、磷酸盐、化学需氧量(CODCr)、叶绿素a和浊度的去除率分别达到61.79±15.54%、72.11±8.26%、54.57±7.65%、68.79±11.89%、73.54±8.16%、38.97±10.98%、85.13±3.96%和88.54±2.55%。再生水水质明显改善。此外,浮游生物和沉积微生物的多样性和均匀度显著增加,表明其具有恢复受再生水补给干扰的水生生态系统的能力。生物多样性的增强可能与生境异质性的改善和物化条件的稳定有关,这有利于敏感类群的重建。此外,经pwp阔叶林处理后,富营养化和贫营养化指标下降,贫营养化和贫营养化指标出现。这些变化表明,从一个营养丰富、耐污染的社区向一个更清洁、自我维持的水生系统的功能转变,表明了水质改善和生态恢复的潜力。因此,该系统有望用于处理再生水和水生生态恢复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A pilot-scale study of improving water quality and the aquatic ecosystem of a reclaimed water-recharged reservoir by an integrated constructed wetland-submerged macrophyte forest ecosystem

A pilot-scale study of improving water quality and the aquatic ecosystem of a reclaimed water-recharged reservoir by an integrated constructed wetland-submerged macrophyte forest ecosystem
A pilot-scale carbon release pond-constructed wetland-oxidation pond (PWP) coupled with a submerged macrophyte forest was constructed to improve the water quality of reclaimed water and to restore the aquatic ecosystem of Shahe reservoir recharged with the treated reclaimed water. With combined effects of physical, chemical, and microbial processes like interception, precipitation, nitrification and denitrification, PWP-macrophyte system achieved 61.79 ± 15.54 %, 72.11 ± 8.26 %, 54.57 ± 7.65 %, 68.79 ± 11.89 %, 73.54 ± 8.16 %, 38.97 ± 10.98 %, 85.13 ± 3.96 %, and 88.54 ± 2.55 % of total nitrogen (TN), NH4+-N, NO3-N, total phosphorus (TP), phosphate, chemical oxygen demand (CODCr), chlorophyll a, and turbidity removal, significantly improving water quality of the reclaimed water. Furthermore, the plankton and sedimentary microbial diversity and evenness were notably increased by the macrophyte forest, indicating its ability to restore the aquatic ecosystem disturbed by reclaimed water replenishment. The enhanced biodiversity was likely driven by improved habitat heterogeneity and stabilized physicochemical conditions, which favored the reestablishment of sensitive taxa. In addition, after being treated with the PWP-macrophyte forest, the eutrophic and saprobic indicators decreased while the oligotrophic and oligosaprobic indicators appeared. These changes indicate a functional shift from a nutrient-rich, pollution-tolerant community towards a cleaner, self-sustaining aquatic system, demonstrating both water quality improvement and ecological recovery potential. The proposed system is therefore promising for treating reclaimed water-recharged waters and for aquatic ecology restoration.
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来源期刊
Journal of water process engineering
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
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