Yu Liang , Yili Ge , Kunkun Tian , Xiang Chen , Aiping Wu , Dabing Ge , Jiawei Zhang , Zhenrong Huang
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引用次数: 0
Abstract
In modern agriculture, fertilizers and pesticides not absorbed by crops contribute significant total nitrogen (TN) and total phosphorus (TP) to water bodies, leading to agricultural non-point source pollution (ANSP). This study presents a novel ecological ditch utilizing Vallisneria natans (V. natans) to purify TN and TP in farmland drainage while enhancing economic efficiency. Ecologically, the ecological ditch effectively intercepted TN and TP in the drainage water, achieving removal rates of 94.8–97.0 % for TN and 88.8–94.0 % for TP. Economically, the net profit and output/input ratio of the ecological ditch reached 3002.5 ± 340.7 RMB and 1.53 ± 0.18, respectively. Furthermore, the results indicated a negative correlation between the biomass of V. natans and the concentrations of TN (r = −0.51) and TP (r = −0.46) in water. The study also revealed significant negative correlations between the biomass of V. natans and the concentrations of TN (r = −0.70) and TP (r = −0.48) of sediments. Additionally, The biomass exhibited a positive correlation with both the DO (r = 0.86) concentration in the water and the organic matter content in the sediment (OM_S) (r = 0.95). These findings reflect the tendencies and transformation pathways of TN and TP within the ecological ditch. These findings highlight the potential of ecological ditches as effective tools for mitigating ANSP while providing economic benefits to agricultural systems.
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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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