Comparative evaluation of hydraulic retention time effect in Bio-rack wetlands system operation in tropical climate.

IF 3.1 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Phytoremediation Pub Date : 2025-06-23 DOI:10.1080/15226514.2025.2511147

Jaqueline Dos Santos Soares, Mateus Pimentel de Matos, Antonio Teixeira de Matos, Mateus Henrique Barbosa, Stephani Moreira Alves, Fátima Resende Luiz Fia, Rodolfo Appoloni Crippa

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引用次数: 0

Abstract

The aim of this study was to evaluate the effect of different hydraulic retention time (HRT) in Bio-rack Wetland Systems (BRWSs) planted with vetiver grass in tropical climate. For this purpose, four BRWSs were built on an experimental scale with HRTs of 6, 12, 24 and 48 h, denoted BRWSs A, B, C, and D, respectively. The removal efficiencies for BRWSs A, B, C, and D reached 27, 50, 58 and 67% for biochemical oxygen demand (BOD); 20, 29, 65, and 74% of chemical oxygen demand (COD); 1.1, 11, 15 and 32% of total Kjeldahl nitrogen (TKN); 1.4, 12, 18 and 29% of total phosphorus (TP); and 0.01, 0.1, 0.3, and 0.8 log units of thermotolerant coliforms (C_Ther), respectively. Based on results, BRWS D showed statistically greater performance than BRWS A for BOD, COD, TP, and CTher and efficiencies were similar to those typical found in septic tanks (with BRWS D being more effective), being able to be used for decentralized wastewater treatment. The high variability in sewage characteristics may have resulted in limitations in detecting statistical differences between treatments. From regression analysis, there is a suggestion that the HRT of 38 h would provide the best results.

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热带气候条件下生物湿地系统水力滞留时间效应的比较评价。

研究了热带气候条件下不同水力滞留时间（HRT）对香根草生物湿地系统（BRWSs）的影响。为此，在实验尺度上构建4个BRWSs， hrt分别为6、12、24和48 h，分别表示BRWSs A、B、C和D。对BRWSs A、B、C、D的生化需氧量去除率分别达到27,50%，58%和67%；20、29、65、74%的化学需氧量（COD）；1.1、11、15、32%的总凯氏定氮（TKN）；总磷（TP）的1.4、12、18和29%；耐温大肠菌群（CTher）分别为0.01、0.1、0.3和0.8 log单位。结果显示，BRWS D在BOD、COD、TP和CTher方面的性能优于BRWS A，其效率与化粪池中的典型效果相似（BRWS D更有效），可用于分散污水处理。污水特性的高度可变性可能导致在检测处理之间的统计差异方面受到限制。从回归分析来看，38 h的HRT效果最好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Phytoremediation 环境科学-环境科学

CiteScore

7.60

自引率

5.40%

发文量

145

审稿时长

3.4 months

期刊介绍： The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.