Nitrogen removal from low COD/TN ratio manure-free piggery wastewater within an upflow microaerobic sludge reactor

Meng, Jia; Li, Jiuling; Li, Jianzheng; Antwi, Philip; Deng, Kaiwen; Wang, Cheng; Buelna, Gerardo

doi:10.1016/j.biortech.2015.09.023

Cited by 68 publications

(25 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Municipal and domestic wastewater generally has a low carbon to nitrogen (C/N) ratio, which is unfavorable for nitrogen and phosphorus removal during wastewater treatment when employing a biological nutrient removal (BNR) process [1]. Although it could be solved by adding external carbon sources, the overall treatment expense increased because of extra purchase cost, and the systems' intricate management and operation [2,3]. To date, much more effort has been devoted to the development of new processes for reducing carbon sources and aeration required for nutrient removal.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Deng

Ngo

Guo

et al. 2018

Chemical Engineering Journal

View full text Add to dashboard Cite

This study developed a new microbial fuel cell (MFC) system (Sponge-MFC), which consisted of a cathodic chamber with an added sponge and two anodic chambers, for low carbon/nitrogen (C/N) wastewater treatment. When operating in the closed-circuit state, the Sponge-MFC(C) demonstrated its superior electrochemical performance compared to the closed-circuit MFC. This superiority took the form of higher coulombic efficiencies, voltage outputs, current densities and power densities. Adding a sponge could reduce the cathode's charge transfer resistance and solution resistance, and improve its capacitance, thus increasing cathodic reaction rate and power outputs. Simultaneous nitrification denitrification (SND) and bioelectrochemical denitrification processes on the cathode coupled with the sponge's SND process were responsible for efficient removal of nitrogen from the Sponge-MFC(C). Fluorescent in situ hybridization (FISH) analysis revealed that nitrifying bacteria and highly diversified denitrifying bacteria were distributed at the cathode's outer layer and inner layer, respectively. Higher phosphorus removal efficiencies (82.06 ± 1.21%) in the Sponge-MFC(C) than that in the MFC(C) (53.97 ± 2.32%) could be ascribed to biological phosphorus removal and precipitation of phosphate salts on the cathode. These results suggested the Sponge-MFC(C) could accomplish better 2 electrochemical behaviors and nutrient removal due to sponge addition when treating wastewater with low C/N ratio.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Deng

Ngo

Guo

et al. 2018

Chemical Engineering Journal

View full text Add to dashboard Cite

show abstract

“…We used magnesium, calcium, and iron salts as trace elements for microbial growth and adjusted the pH with HCl and NaOH after mixing evenly. The properties of synthetic wastewater for simulating diluted piggery sewage [19] are shown in Table 1. Table 1.…”

Section: Synthetic Wastewater Compositionmentioning

confidence: 99%

Removal of High-Strength Ammonia Nitrogen in Biofilters: Nitrifying Bacterial Community Compositions and Their Effects on Nitrogen Transformation

Peng

Gao

Zhu

et al. 2020

Water

View full text Add to dashboard Cite

Increasing attention has been given to the treatment of livestock and poultry wastewater because of its high ammonium nitrogen (NH4+-N) content and low carbon/nitrogen ratio (C/N). Ceramic filter medium (CFM) and dewatered aluminum sludge (DAS), which are products from cast-off materials, are used as small-scale combined biological filters (CFM-DAS) for wastewater treatment. The high and stale removal efficiency of chemical oxygen demand (COD), NH4+-N, and total nitrogen (TN) in the DAS filter indicate that DAS plays a major role in pollutant removal. Although significant differences are found between the composition of nitrifying bacteria in CFM and DAS, the structures of nitrifying communities are evenly distributed in each layer of CFM or DAS irrespective of the running time. Microbial compositions are attributed to the comprehensive effect of various environmental factors such as pH and TN at effluents. In the DAS, Nitrosospira shows significant negative correlation with the concentrations of NH4+-N in effluents, whereas it has positive correlation with NO3−-N, and Nitrososphaera has a significant negative correlation with NO3−-N in effluents. Pearson correlation test reveals that certain genera may be used in estimating or predicting NH4+-N consumption and NO3−-N accumulation in CFM-DAS for treating sewage with a high NH4+-N content.

show abstract

“…In order to prove that oxygen was not the limiting agent in the process, C/N ratio was successively reduced as Comparing with Phase III-b (Table 2), it is observed that besides of O2 economy (about 74 %). Meng et al (2015) obtained N removal of 87% using nitritation/denitritation in an upflow microaerobic sludge reactor (UMSR), operating with swine influent at C/N ratio of 0.84.…”

Section: Do Restriction Effect On Ndf Processmentioning

confidence: 99%

Swine Wastewater Nitrogen Removal at Different C/N Ratios Using the Modified Ludzack-Ettinger Process

et al. 2018

View full text Add to dashboard Cite

The swine industry has been presented strong growth and thus is producing large volumes of effluents that must be correctly management. Nitritation/denitritation process can be used to improve system performance, saving the energy cost with aeration and with the external source of carbon due to the lower C/N requirement. The aim of this study was to evaluate swine wastewater Nitrification/Denitrification (NDF) and Nitritation/denitritation (NDT) processes at different C/N ratios, using the Modified Ludzack-Ettinger (MLE) process, in order to obtain a system with efficient nitrogen removal and low oxygen and carbon consumption. Four phases were conducted during the experiment: Phase I) DO between 2.0-3.0 mg L -1 of O2 and C/N 1.5 (NDF); Phase II) DO between 0.6-0.7 mg L -1 of O2 and C/N 1.5 (NDT); Phase III) DO between 0.6-0.7 mg L -1 of O2, C / N ratios of1.5, 0.9, 0.75 and 0.6 (NDT); Phase IV) DO between 2.0-3.0 mg L -1 of O2, C/N ratios of 1.5, 0.9, 0.75, and 0.6 (NDF). The best operational condition was found in the C / N ratio of 0.9 (Phase III) obtaining an optimum N removal of 86.3%. In this condition, the system saved around 26.8% in total organic carbon consumption and operated at conditions of 74% lower dissolved oxygen when compared to conventional process for N-removal. This strategy can be very useful for nitrogen removal for low carbon swine wastewater as digestate from anaerobic processes.

show abstract

Nitrogen removal from low COD/TN ratio manure-free piggery wastewater within an upflow microaerobic sludge reactor

Cited by 68 publications

References 37 publications

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Removal of High-Strength Ammonia Nitrogen in Biofilters: Nitrifying Bacterial Community Compositions and Their Effects on Nitrogen Transformation

Swine Wastewater Nitrogen Removal at Different C/N Ratios Using the Modified Ludzack-Ettinger Process

Contact Info

Product

Resources

About