{"title":"Effective Treatment of Solar Septic Tank Effluents in Small-Scale Constructed Wetlands: Insights into Microbial Community","authors":"Thammarat Koottatep, Tatchai Pussayanavin, Sopida Khamyai, Chongrak Polprasert","doi":"10.1007/s11270-025-07903-5","DOIUrl":null,"url":null,"abstract":"<div><p>Constructed wetlands (CW) represent a promising technology for wastewater treatment, particularly in urban areas of developing countries. Previous studies have demonstrated the effectiveness of modified constructed wetlands (mCW) in meeting desired treatment standards, yet further investigation into their pollutant removal mechanisms is essential. Microbial communities within CWs play a pivotal role in pollutant degradation and removal, orchestrating vital processes such as decomposition, nitrification, denitrification, and phosphorus removal. This study aimed to characterize microbial communities within the layers of small-scale mCWs, elucidating their roles in pollutant treatment. Results indicated remarkable efficiencies in contaminant removal, with total chemincal oxygen demand (TCOD) and biological oxygndemard (BOD<sub>5</sub>) removal rates averaging approximately 72.7% and 87.6%, respectively, and nutrient parameters achieving removal efficiencies of 87.2—88.9%. Microbial analysis revealed Proteobacteria as the predominant phylum across all samples, showcasing diverse metabolic capabilities essential for wastewater remediation. Notably, Nitrospirae emerged as a dominant phylum, indicating consistent microbial activity throughout the CW system. These findings underscore the efficacy of small-scale mCWs in promoting efficient pollutant removal and highlighting the critical role of microbial communities in enhancing wastewater treatment processes.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11270-025-07903-5.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-07903-5","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
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Abstract
Constructed wetlands (CW) represent a promising technology for wastewater treatment, particularly in urban areas of developing countries. Previous studies have demonstrated the effectiveness of modified constructed wetlands (mCW) in meeting desired treatment standards, yet further investigation into their pollutant removal mechanisms is essential. Microbial communities within CWs play a pivotal role in pollutant degradation and removal, orchestrating vital processes such as decomposition, nitrification, denitrification, and phosphorus removal. This study aimed to characterize microbial communities within the layers of small-scale mCWs, elucidating their roles in pollutant treatment. Results indicated remarkable efficiencies in contaminant removal, with total chemincal oxygen demand (TCOD) and biological oxygndemard (BOD5) removal rates averaging approximately 72.7% and 87.6%, respectively, and nutrient parameters achieving removal efficiencies of 87.2—88.9%. Microbial analysis revealed Proteobacteria as the predominant phylum across all samples, showcasing diverse metabolic capabilities essential for wastewater remediation. Notably, Nitrospirae emerged as a dominant phylum, indicating consistent microbial activity throughout the CW system. These findings underscore the efficacy of small-scale mCWs in promoting efficient pollutant removal and highlighting the critical role of microbial communities in enhancing wastewater treatment processes.
期刊介绍：
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation.
Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
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