Nutrients removal and substrate enzyme activities in vertical subsurface flow constructed wetlands for mariculture wastewater treatment: Effects of ammonia nitrogen loading rates and salinity levels

Li, Meng; Zhenlin, Liang; Callier, Myriam D.; D’Orbcastel, Emmanuelle Roque; Sun, Guoxiang; Ma, Xiaona; Li, Xian; Wang, Shunkui; Liu, Ying; Song, Xinshan

doi:10.1016/j.marpolbul.2018.04.013

Cited by 34 publications

(5 citation statements)

References 43 publications

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“… The pilot CW system (a) and a single CW unit (b). (Figure (b) was adapted from Li et al (unpublished data) [ 70 ]). …”

Section: Figurementioning

confidence: 99%

Characterization of Microbial Communities in Pilot-Scale Constructed Wetlands with Salicornia for Treatment of Marine Aquaculture Effluents

Song

et al. 2018

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Microorganisms play an essential role in the performance of constructed wetlands (CWs) for wastewater treatment. However, there has been limited discussion on the characteristics of microbial communities in CWs for treatment of effluents from marine recirculating aquaculture systems (RAS). This study is aimed at characterizing the microbial communities of pilot-scale CWs with Salicornia bigelovii for treatment of saline wastewater from a land-based Atlantic salmon RAS plant located in Northern China. Illumina high-throughput sequencing was employed to identify the profile of microbial communities of three CWs receiving wastewater under different total ammonia nitrogen (TAN) concentrations. Results of this study showed remarkable spatial variations in diversity and composition of microbial communities between roots and substrates in three CWs, with distinct response to different TAN concentrations. In particular, Proteobacteria, Firmicutes, Cyanobacteria, and Bacteroidetes were predominant in roots, while Cyanobacteria, Proteobacteria, Firmicutes, Verrucomicrobia, and Bacteroidetes were prevalent in substrates. Moreover, redundancy analysis indicated that specific functional genera, such as Nitrosopumilus, Vibrio, Pseudoalteromonas, Nitrospina, and Planctomyces, played key roles in the removal of nitrogen/phosphorus pollutants and growth of wetland plants. From a microorganism perspective, the findings of this study could contribute to better understanding of contaminants' removal mechanism and improved management of CWs for treatment of effluents from land-based marine aquaculture.

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“… The pilot CW system (a) and a single CW unit (b). (Figure (b) was adapted from Li et al (unpublished data) [ 70 ]). …”

Section: Figurementioning

confidence: 99%

Characterization of Microbial Communities in Pilot-Scale Constructed Wetlands with Salicornia for Treatment of Marine Aquaculture Effluents

Song

et al. 2018

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“…Water samples (250 mL) were taken from the water sample tape from the outlet of the algae bioreactor of all the six systems every 12 h for the analysis of total ammonia nitrogen (TAN), nitrite nitrogen (NO 2 − -N), nitrate nitrogen (NO 3 − -N), total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) according to standard methods [ 27 ]. All the water samples were stored at 4°C immediately after the collection and were analyzed for 12 hours.…”

Section: Methodsmentioning

confidence: 99%

Integration of Marine Macroalgae (Chaetomorpha maxima) with a Moving Bed Bioreactor for Nutrient Removal from Maricultural Wastewater

Deng

et al. 2020

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Rather than direct nutrient removal from wastewaters, an alternative approach aimed at nutrient recovery from aquacultural wastewaters could enable sustainable management for aquaculture production. This study demonstrated the feasibility of cultivating marine macroalgae (Chaetomorpha maxima) with a moving bed bioreactor (MBBR-MA), to remove nitrogen and phosphorus in aquaculture wastewater as well as to produce macroalgae biomass. MBBR-MA significantly increased the simultaneous removal of nitrate and phosphate in comparison with only MBBR, resulting in an average total nitrogen (TN) and total phosphorus (TP) removal efficiency of 42.8±5.5% and 83.7±7.7%, respectively, in MBBR-MA while MBBR had no capacity for TN and TP removal. No chemical oxygen demand (COD) removal was detected in both reactors. Phosphorus could be a limiting factor for nitrogen uptake when N : P ratio increased. The recovered nitrogen and phosphorus resulted in a specific growth rate of 3.86%–10.35%/day for C. maxima with an uptake N : P ratio of 6. The presence of macroalgae changed the microbial community in both the biofilter and water by decreasing the relative abundance of Proteobacteria and Nitrospirae and increasing the abundance of Bacteroidetes. These findings indicate that the integration of the macroalgae C. maxima with MBBR could represent an effective wastewater treatment option, especially for marine recirculating aquaculture systems.

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“…Some gene sequences (such as the amo‐A gene sequence in Nitrosomonas europaea ) encode the alpha subunit of enzymes responsible for NH 4 + conversion. However, to determine NOB from genes that encode subunits of NXR (e.g., Nitrobacter and Nitrospira ), specific 16S rRNA primers are required to indirectly detect the presence of enzymes involved in NO 2 − oxidation and their activity (Daims et al, 2011; Lawson & Lücker, 2018; Li, Liang, et al, 2018).…”

Section: Determination Of N‐enzymatic Activitymentioning

confidence: 99%

Key enzymes involved in anammox‐based processes for wastewater treatment: An applied overview

Venturin

Rodrigues

Bonassa

et al. 2022

Water Environment Research

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Nutrients removal and substrate enzyme activities in vertical subsurface flow constructed wetlands for mariculture wastewater treatment: Effects of ammonia nitrogen loading rates and salinity levels

Cited by 34 publications

References 43 publications

Characterization of Microbial Communities in Pilot-Scale Constructed Wetlands with Salicornia for Treatment of Marine Aquaculture Effluents

Characterization of Microbial Communities in Pilot-Scale Constructed Wetlands with Salicornia for Treatment of Marine Aquaculture Effluents

Integration of Marine Macroalgae (Chaetomorpha maxima) with a Moving Bed Bioreactor for Nutrient Removal from Maricultural Wastewater

Key enzymes involved in anammox‐based processes for wastewater treatment: An applied overview

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