Evaluation of the factors influencing the treatment performance of a livestock constructed wetland

Reyes, Nash Jett; Geronimo, Franz Kevin F.; Kim, Lee-Hyung

doi:10.1016/j.ecoleng.2020.105811

Cited by 11 publications

(4 citation statements)

References 25 publications

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“…Some researches [12,13] report ammonia nitrogen and total nitrogen removal efficiencies of 35% and 53%, respectively, for domestic water, because of the lack of sufficient dissolved oxygen. Similar performances have been showed for wastewater released from livestock using CWs as depuration system [14]. These removal efficiencies can be increased by artificial forced aeration systems in CWs [15].…”

Section: Introductionsupporting

confidence: 72%

Hybrid Constructed Wetland to Improve Organic Matter and Nutrient Removal

Fernández-Fernández

Vega

Jaramillo-Morán

et al. 2020

Water

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Constructed wetlands are one of the best technologies for wastewater treatment in small towns, small businesses or farms and/or livestock breeding. In this work, a wastewater depuration ecological system implemented in a hybrid constructed wetland to remove nutrients and organic matter from small urban agglomerations is studied. It comprises two processing stages: a primary treatment carried out in two hydrolytic up-flow sludge bed digesters working in parallel and a secondary one made up of two vertical flow constructed wetlands, which are alternatively used, followed by a horizontal flow constructed wetland. An internal recirculation system connects the output of the vertical flow constructed wetlands to the input of the hydrolytic up-flow sludge bed digesters with the aim of promoting the nitrification-denitrification process. High nutrients and organic matter removal efficiencies were observed when treating highly polluted wastewater from an animal farm. Therefore, this ecological depuration system, designed with an internal recirculation to enhance nitrogen reduction, may be considered an efficient alternative to treat wastewater from small urban agglomerations and diffuse contamination from agricultural industries and livestock farms polluting surface waters with nitrates, which may cause serious environmental problems, such as eutrophication.

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Section: Introductionsupporting

confidence: 72%

Hybrid Constructed Wetland to Improve Organic Matter and Nutrient Removal

Fernández-Fernández

Vega

Jaramillo-Morán

et al. 2020

Water

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“…Therefore, this study mainly focused on evaluating the treatment performance of several constructed wetlands installed across South Korea. Similar studies regarding the treatment performance of constructed wetlands in South Korea were conducted by several authors [31][32][33][34][35]; however, a nationwide survey of constructed wetlands treating runoff from various land use types has not been performed yet. Furthermore, the ecosystem services provided by nature-based systems are often overlooked since the efficiency of facilities is commonly assessed only in terms of their pollutant removal capabilities.…”

Section: Introductionmentioning

confidence: 81%

“…As shown in Equation ( 1), EMC can be calculated by dividing the total cumulative pollutant load throughout the rainfall duration t by the cumulative runoff volume. EMC is frequently used to quantify non-point source pollution during storm events in the catchment area of research facilities [31,40].…”

Section: Statistical Analysesmentioning

confidence: 99%

Constructed Wetlands in South Korea: Current Status and Performance Assessment

et al. 2021

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The efficiency of nature-based facilities is mostly evaluated in terms of their pollutant removal capabilities; however, apart from water purification functions, constructed wetlands also perform ecological, cultural, and environmental education functions. A multi-criteria performance index was developed in this study to evaluate the overall efficiency of constructed wetlands. A total of 54 constructed wetlands installed across South Korea were monitored to evaluate the pollutant removal performance of the facilities. A comparison between the conventional pollutant removal-based evaluation and the developed multi-criteria index was also performed to determine the key changes in the results of evaluation when different methods are employed. Among the different types of wetlands studied, hybrid systems were found to be the most effective in terms of pollutant removal due to their complex configurations and functions. Newly constructed treatment wetlands have unstable performance and thus, a stabilization period ranging from two to five years is required to assess the facility’s pollutant removal capabilities. As compared to the conventional pollutant removal-based efficiency evaluation, the comprehensive evaluation method provided a more strategic tool for identifying the facilities’ strengths and weaknesses. Generally, the multi-criteria performance index developed in this inquiry can be utilized as a general tool for evaluating the sustainability of similar nature-based facilities.

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“…Manure, as the primary organic byproduct of livestock production, represents a highly costeffective source for biogas production through anaerobic digestion (Ch'ng, Ahmed, Kassim, & Majid, 2014). Although manure can be processed using a variety of techniques, including composting (Zhang et al, 2020), vermicomposting (Cao, Tian, Wu, Li, & Zhu, 2021), slurry treatment, and stabilization wetlands (Reyes, Geronimo, & Kim, 2020), among others. The anaerobic digestion process offers numerous advantages, such as the production of high-quality fertilizer, the mitigation of foul odors, the elimination of microbial pathogens, and the promotion of sustainable energy generation through the production of biogas (Connolly, Lund, & Mathiesen, 2016).…”

Section: Introductionmentioning

confidence: 99%

Variation and Spatial Distribution of Emissions from Livestock Manure Management in Iran: An Evaluation and Location Analysis

Vaysi

Pashaki

Rohani

et al. 2023

Preprint

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As the demand for livestock and poultry supply chain continues to rise, managing the ever-increasing amount of livestock manure has become a significant challenge. In this study, we employ two models of neural networks, namely the multi-layer perceptron (MLP) and radial basis function (RBF) models, to accurately forecast the production of livestock and poultry manure from 2020 to 2030. The aim is to aid decision-making processes in reducing greenhouse gas (GHG) emissions caused by manure storage. Our results reveal that the RBF model outperforms the MLP model in terms of accuracy and reliability. According to our predictions, the provinces of Iran are estimated to produce 10782.4 and 6469.44 Mm3.year− 1 of biogas and biomethane, respectively, from livestock and poultry manure in 2030. This is equivalent to 4.03% and 4.98% of Iran's annual gas and electricity consumption in 2030. Our findings also show that the manure management system will produce 14 million tons of carbon dioxide in 2030, equivalent to 16.71% of GHG emissions in the agricultural sector. Our scenario analysis indicates that using biomethane produced from biogas instead of natural gas in 2030 is the most effective action to reduce GHG emissions in the energy sector compared to the current trend of manure management. Our study highlights the potential of neural network models in accurately forecasting livestock manure production and in developing strategies for reducing GHG emissions.

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Evaluation of the factors influencing the treatment performance of a livestock constructed wetland

Cited by 11 publications

References 25 publications

Hybrid Constructed Wetland to Improve Organic Matter and Nutrient Removal

Hybrid Constructed Wetland to Improve Organic Matter and Nutrient Removal

Constructed Wetlands in South Korea: Current Status and Performance Assessment

Variation and Spatial Distribution of Emissions from Livestock Manure Management in Iran: An Evaluation and Location Analysis

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