Enhanced nutrient removal from aquaculture wastewater using optimized constructed wetlands: A comprehensive screening of microbial complexes, substrates, and macrophytes

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2024-11-29 DOI:10.1016/j.jwpe.2024.106634

Farhan Nabi , Yaqin Peng , Rakhwe Kama , Sumbal Sajid , Fareed Uddin Memon , Chongjian Ma , Huashou Li

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引用次数: 0

Abstract

Constructed wetlands (CWs) are widely used to treat wastewater from aquaculture, and their efficiency largely depends on active components like microbes, substrates, and macrophytes. This study screened various commercial microbial complexes, substrates, and macrophytes for their effectiveness in removing nitrogen and phosphorus from pond wastewater contaminated with fish feed and excreta (CPW). Four microbial complexes (MC1, MC2, MC3, and MC4) were screened, two substrate types (zeolite and ceramsite), and five common macrophytes—Pontederia crassipes (PC), Myriophyllum aquaticum (MA), Canna indica (CI), Typha latifolia (TL), and Phragmites australis (PA). Screening evaluation included COD, total nitrogen (TN), ammonium nitrogen (AN), nitrate nitrogen (NN), and total phosphorus (TP) removal. Among microbial complexes, MC3 at 1.0 g/L (MC3-T2) exhibited the highest efficiency in COD (56 %), TN (66 %), AN (51 %), NN (69 %), and TP (59 %) removal. Screening of macrophytes showed that MA was most efficient with a decrease of 61 % COD, 91 % TN, 62 % AN, 84 % NN, and 69 % TP. Similarly, between both substrates, zeolite most effective, with 50–25 % COD, 12–7 % TN, 44–28 % AN, 71–47 % NN, and 45–19 % TP removal over six periods. Based on these findings, four artificial CWs were developed, with CW-2 (which carries MA, CI, MC3-T2, and zeolite) showed the highest removal of COD (57–43 %), TN (29–11 %), AN (65–28 %), NN (87–69 %), and TP (80–47 %) over eight periods. The development of CWs by utilizing these optimal components (particularly CW-2) provides highly effective solutions for excessive nutrients removal from CPW. This innovative approach presents a promising alternative for mitigating eutrophication and enhancing wastewater treatment processes.

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利用优化的人工湿地增强水产养殖废水的营养去除：微生物复合物、基质和大型植物的综合筛选

人工湿地（CWs）被广泛用于处理水产养殖废水，其效率在很大程度上取决于活性成分，如微生物、基质和大型植物。本研究筛选了各种商业微生物复合物、底物和大型植物，以研究它们对鱼饲料和排泄物污染的池塘废水中氮和磷的去除效果。筛选出4种微生物配合物（MC1、MC2、MC3和MC4）， 2种底物类型（沸石和陶粒），以及5种常见的大型植物——pontederia crassipes （PC）、Myriophyllum aquaticum （MA）、美人蕉（CI）、Typha latifolia （TL）和芦苇（Phragmites australis）。筛选评价包括COD、总氮（TN）、铵态氮（AN）、硝态氮（NN）和总磷（TP）去除率。在微生物复合物中，1.0 g/L的MC3 （MC3- t2）对COD（56%）、TN（66%）、AN（51%）、NN（69%）和TP（59%）的去除效率最高。对大型植物的筛选表明，MA最有效，COD降低61%，TN降低91%，AN降低62%，NN降低84%，TP降低69%。同样，在两种基质中，沸石最有效，在六个周期内去除50 - 25%的COD， 12 - 7%的TN， 44 - 28%的AN， 71 - 47%的NN和45 - 19%的TP。在此基础上，开发了4种人工化化剂，其中CW-2（携带MA、CI、MC3-T2和沸石）在8个周期内对COD（57 - 43%）、TN（29 - 11%）、AN（65 - 28%）、NN（87 - 69%）和TP（80 - 47%）的去除率最高。利用这些最佳组分（特别是CW-2）开发CPW，为CPW中过量营养物质的去除提供了高效的解决方案。这种创新的方法为减轻富营养化和加强废水处理过程提供了一种有希望的替代方法。

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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