Enhancing the pollutant removal performance and biological mechanisms by adding ferrous ions into aquaculture wastewater in constructed wetland

Zhao, Zhimiao; Zhang, Xiao; Wang, Zhufang; Song, Xinshan; Cheng, Man; Zhang, Yinjiang

doi:10.1016/j.biortech.2019.122003

Cited by 41 publications

(10 citation statements)

References 27 publications

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“…Our previous study have demonstrated that microorganisms play important role in N and P removal in the PDCS (Ma et al, 2019). The removal of N was mainly contributed to simultaneous nitrification, anaerobic ammonium oxidation, and denitrification processes via the nitrogen-related bacteria (Zhao et al, 2019). In this paper, Bacillus was one of the three predominant genera in ponds and the ditch for the two systems, respectively.…”

Section: Discussionmentioning

confidence: 72%

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Pan

Liu

et al. 2021

Front. Environ. Sci.

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Microorganisms played important roles in nutrient removal in Pond-ditch circulation system (PDCS). However, dynamics of microbial community in the PDCS, and responses of rhizosphere and non-rhizosphere microbial community to rural wastewater remains unclear. In this paper, average operational taxonomic units numbers of sediment microbial varied from 10,254 to 17,112, and values in rhizosphere were higher than those of the non-rhizosphere (p < 0.05). Bacillus, Clostridium sensu stricto 1, and Geobacter were the predominant genera in PDCS sediment with relative abundances of 0.52–17.61%, 0.26–8.08%, and 0.20–4.58%, respectively. However, Bacillus, Clostridium sensu stricto 1, and Geobacter genera in rhizosphere were more abundant than those in non-rhizosphere at day 30. Chao 1 index ranged from 10,225 to 17,033 and showed significant positive correlations with all sediment properties (p < 0.05). Chao 1 and Shannon indices in rhizosphere were significant positively related to tartaric acid and total organic carbon, respectively; while significant correlation between Shannon and Simpson indices in non-rhizosphere and oxidation-reduction potential were detected (p < 0.05). Redundancy analysis suggested that lactic acids, proteins, and amino acids had strong positive effects on Geobacter and Clostridiu sensu stricto 12 in the rhizosphere; while Bacillus and Clostridium in non-rhizosphere were significantly affected by sediment ammonia nitrogen and nitrate nitrogen. Environmental variables accounted for 66.9 and 60.3% of the total variation for the microbial community of non-rhizosphere and rhizosphere sediments, respectively. Our results highlight that root exudates and sediment available N alter predominant genera in the rhizosphere and non-rhizosphere, respectively, which is benefit for optimizing removal efficiency of PDCSs in large-scale applications.

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Section: Discussionmentioning

confidence: 72%

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Pan

Liu

et al. 2021

Front. Environ. Sci.

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“…To date, several biological and chemical methods have been used in the treatment of aquaculture wastewater. However, these methods have several disadvantages such as being no environmentally friendly, inefficient, and without economic value on large-scale application [ 1 , 2 , 3 , 4 ]. In general, this aquaculture waste is laden with various types of pollutants, especially high quantities of nitrogenous compounds, mainly in ammonia form (NH 4 + ).…”

Section: Introductionmentioning

confidence: 99%

Ammonia Bioremediation from Aquaculture Wastewater Effluents Using Arthrospira platensis NIOF17/003: Impact of Biodiesel Residue and Potential of Ammonia-Loaded Biomass as Rotifer Feed

et al. 2021

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The present work evaluated the capability of Arthrospira platensis complete biomass (ACDW) and the lipid-free biomass (LFB) to remove ammonium ions (NH4+) from aquaculture wastewater discharge. Under controlled conditions in flasks filled with 100 mL of distilled water (synthetic aqueous solution), a batch process ion-exchange was conducted by changing the main parameters including contact times (15, 30, 45, 60, 120, and 180 min), initial ammonium ion concentrations (10, 20, 30, 40, 50, and 100 mg·L−1), and initial pH levels (2, 4, 6, 8, and 10) at various dosages of ACDW and LFB as adsorbents (0.02, 0.04, 0.06, 0.08, and 0.1 g). After lab optimization, ammonia removal from real aquaculture wastewater was also examined. The removal of ammonium using ACDW and LFB in the synthetic aqueous solution (64.24% and 89.68%, respectively) was higher than that of the real aquaculture effluents (25.70% and 37.80%, respectively). The data of IR and Raman spectroscopy confirmed the existence of various functional groups in the biomass of ACDW and LFB. The adsorption equilibrium isotherms were estimated using Freundlich, Langmuir, and Halsey models, providing an initial description of the ammonia elimination capacity of A. platensis. The experimental kinetic study was suitably fit by a pseudo-second-order equation. On the other hand, as a result of the treatment of real aquaculture wastewater (RAW) using LFB and ACDW, the bacterial counts of the LFB, ACDW, ACDW-RAW, and RAW groups were high (higher than 300 CFU), while the LFB-RAW group showed lower than 100 CFU. The current study is the first work reporting the potential of ammonia-loaded microalgae biomass as a feed source for the rotifer (Brachionus plicatilis). In general, our findings concluded that B. plicatilis was sensitive to A. platensis biomass loaded with ammonia concentrations. Overall, the results in this work showed that the biomass of A. platensis is a promising candidate for removing ammonia from aquaculture wastewater.

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“…Therefore, the discharges from aquaculture systems should be kept to minimum levels to mitigate the subsequent environmental impacts (Gilles et al, 2014). Several biological strategies and techniques have been used to improve the quality of aquacultural effluents including combined extensive and intensive fish ponds (Jaeger et al, 2021), artificial freshwater wetlands, aquaponics (Huang et al, 2019; Nuwansi et al, 2019; Zhimiao et al, 2019), using macroalgae and microalgae as biofilters (Ansari et al, 2017; Mohamed Ramli et al, 2018), and bio‐flocculation technology (Deb et al, 2017, 2020).…”

Section: Introductionmentioning

confidence: 99%

Abatement of water nutrient load in a fish culture system using the aquatic trophic levels

Poorbagher

Rafiee

Tavabe

et al. 2021

Water Environment Research

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Integrated aquatic systems are used to decrease the nutrient loads of effluents negating the negative environmental impacts of aquacultural systems. Some of these systems have a separate algae compartment requiring high maintenance. An integrated culture system was set up with different trophic levels: algae, zooplankton, and fish. The algal tank was in‐line with the fish and zooplankton components to minimize the maintenance required for the algae. A control flow‐through system was also set up without the algae and zooplankton compartments. The systems were run for 6 weeks, and water temperature, pH, dissolved oxygen, NO3, NO2, NH4, and PO4 concentrations were measured. A removal rate was determined for each water parameter and the densities of the algae and zooplankton species were measured in each compartment of the integrated system. The concentrations of most nutrients in the integrated system were similar to those of the control system. The density of algae increased during the first 3 weeks and remained almost stable until the end of the experiment. There was an inverse relationship between the densities of two zooplankton suggesting compensatory effects on the control of the algal bloom. The integrated system improved water quality with minimal algal culture maintenance, water exchange, and no fish mortality. Practitioner Points An integrated system could effectively reduce the nutrient load of water. Water replacement in the integrated system was significantly lower than that of a flow through system. The inline plankton culture tanks decreased greatly the maintenance of the system.

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Enhancing the pollutant removal performance and biological mechanisms by adding ferrous ions into aquaculture wastewater in constructed wetland

Cited by 41 publications

References 27 publications

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Ammonia Bioremediation from Aquaculture Wastewater Effluents Using Arthrospira platensis NIOF17/003: Impact of Biodiesel Residue and Potential of Ammonia-Loaded Biomass as Rotifer Feed

Abatement of water nutrient load in a fish culture system using the aquatic trophic levels

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