How Temperature Affects Wastewater Nitrate
Removal in a Bioelectrochemically Assisted
Constructed Wetland System

Xu, Dan; Xiao, Enzong; Xu, Peng; Zhou, Yin; Zhou, Qiaohong; Xu, Dong; Wu, Zhenhua

doi:10.15244/pjoes/75958

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…However, as some experiments demonstrate, at lower air temperatures, sewage treatment plants based on various technologies show poorer performance when it comes to the removal of nutrients. It has been observed that the processes of nitrogen removal from sewage are more efficient in warmer periods of the year as the wastewater temperature increases [84][85][86]. Mietto et al [87] explored seasonal changes in the rate of elimination of various forms of nitrogen in a VF-HF hybrid constructed wetland.…”

Section: Atmospheric Air Temperature and Temperature In The Hf Bedmentioning

confidence: 99%

Influence of the Bed Temperature on the Operational Reliability of a Hybrid Constructed Wetland Wastewater Treatment Plant in South-Western Poland—A Case Study

Jóźwiakowska,

Bugajski

2023

Sustainability

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The aim of this study was to assess the influence of atmospheric air temperature on the efficiency and reliability of pollutants removal from wastewater. The studied facility was a hybrid wetland wastewater treatment plant with vertical and horizontal flow serving a single-family building in the village of Krajanów in south-western Poland. The operation of the facility was evaluated on the basis of studies conducted in 2021–2022. The tests included a physico–chemical analysis of wastewater treated mechanically in a settling tank and effluents from constructed wetland beds with the vertical and horizontal flow. The following parameters were determined: BOD5, COD, total suspended solids, total nitrogen, and total phosphorus. No statistically significant effect of air temperature on the analyzed pollutants removal levels was found. The temperature in the soil–plant bed never fell below 0 °C, and so the wastewater flowing through the beds never froze. The discussed facility was characterized by high efficiency and reliability of the tested pollutants removal across the seasons. The mean concentrations of pollutants in treated wastewater did not exceed the limit values specified in the currently binding legal act. It was shown that hybrid-constructed wetlands can be successfully used for wastewater treatment in the climatic conditions of southern Poland.

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Section: Atmospheric Air Temperature and Temperature In The Hf Bedmentioning

confidence: 99%

Influence of the Bed Temperature on the Operational Reliability of a Hybrid Constructed Wetland Wastewater Treatment Plant in South-Western Poland—A Case Study

Jóźwiakowska,

Bugajski

2023

Sustainability

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“…Thus, it can be concluded that temperature is the main factor that determines the vegetation of plants in CWs. Ji et al [20] indicated that the biochemical and microbiological processes in CW beds work properly at air temperatures above 5 • C. Studies [21][22][23] have shown that the nitrogen removal processes from wastewater are more efficient in warmer periods of the year. Mietto et al [24] observed a linear relationship between air temperature fluctuations and the efficiency of the nitrification and removal of nitrogen compounds in a VF-HF hybrid system in northern Italy.…”

Section: Introductionmentioning

confidence: 99%

“…By contrast, research reports on the influence of the amount of precipitation on the concentration of pollutants in wastewater effluent from CW systems are scarce. Studies [21][22][23] have shown that the nitrogen removal processes from wastewater are more efficient in warmer periods of the year. Mie o et al [24] observed a linear relationship between air temperature fluctuations and the efficiency of the nitrification and removal of nitrogen compounds in a VF-HF hybrid system in northern Italy.…”

Section: Introductionmentioning

confidence: 99%

Impact of Climate Conditions on Pollutant Concentrations in the Effluent from a One-Stage Constructed Wetland: A Case Study

Operacz,

Jóźwiakowski,

Rodziewicz

et al. 2023

Sustainability

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This paper reports the results of an investigation into the influence of precipitation and air temperature on the efficiency of pollutant removal processes and effluent pollutant concentrations in a one-stage constructed wetland with subsurface vertical flow. We studied an on-site constructed wetland system that used Phragmites australis for the treatment of domestic wastewater. The system was located in central Europe, in the south-east of Poland, in a temperate climate zone with transitional features. Physico-chemical analyses of influent and effluent wastewater, as well as measurements of precipitation and air temperature were carried out in the years 2001–2010. It was shown that the pollutant removal efficiency of the treatment plant was significantly higher in the growing season than outside the growing season (the mean efficiency is usually a few percent higher but generally this parameter is highly varied). This indicated that temperature determined the efficiency of the wastewater treatment. We found that the amount of precipitation affected the concentration of pollutants in the effluent. The more rainfall there was, the lower the content of pollutants in the effluent from the treatment plant, which demonstrated that rainwater diluted the concentrations of pollutants in the treated wastewater—thus improving the efficiency of the wastewater treatment plant.

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“…A lot of the research has been carried out since the installation of the first full‐scale plant in the 1960s for the treatment of domestic and industrial wastewater 16–19 . In the last two decades there has been an increase in research related to CW intensification to meet the challenges of treating recalcitrant pollutants and meet the effluent quality for discharge or reuse.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of constructed wetlands for wastewater remediation by modifications and integration of technologies: A review

Patyal

Jaspal

Khare

2022

Env Prog and Sustain Energy

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Constructed wetland (CW) has gained popularity as an eco‐friendly technology for ease of operation and maintenance. This article critically reviews and summarizes the research carried out to date on several approaches for integration of CW with other methods of treatment, exploring several novel modes of operation and factors, to improve the remediation capacity of the CW system. The study shows that the use of different modes of aeration, recirculation of the effluent, hydraulic retention time, and organic loading rate not only improves the removal efficiency of the treatment system but also helps in reducing the surface area required for the system in the treatment of emerging contaminants. The integrated approach analysis gives an insight into the different technologies, which can be coupled with CW for fast, sustainable, and eco‐efficient treatment systems for different types of wastewater. Anaerobic technologies and microbial fuel cell (MFC) have the added advantage of energy generation apart from wastewater treatment, which helps in reducing carbon footprints. Optimization of pollutant treatment in wastewater and electricity generation by CW‐MFC has emerged to be an upcoming area of research. The study disseminates knowledge about the latest developments in the field of intensified CW technology with a focus on modifications and integrated systems, which help in identifying the potential areas of research worth addressing in the future.

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How Temperature Affects Wastewater Nitrate Removal in a Bioelectrochemically Assisted Constructed Wetland System

Cited by 4 publications

References 22 publications

Influence of the Bed Temperature on the Operational Reliability of a Hybrid Constructed Wetland Wastewater Treatment Plant in South-Western Poland—A Case Study

Influence of the Bed Temperature on the Operational Reliability of a Hybrid Constructed Wetland Wastewater Treatment Plant in South-Western Poland—A Case Study

Impact of Climate Conditions on Pollutant Concentrations in the Effluent from a One-Stage Constructed Wetland: A Case Study

Performance enhancement of constructed wetlands for wastewater remediation by modifications and integration of technologies: A review

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