Performance study of annular settler with gratings in circular aquaculture tank using computational fluid dynamics

López-Rebollar, Boris Miguel; Salinas-Tapia, Humberto; García-Pulido, Daury; Durán-García, María Dolores; Gallego-Alarcón, Iván; Fonseca, Carlos Roberto; García-Aragón, Juan Antonio; Díaz-Delgado, Carlos

doi:10.1016/j.aquaeng.2020.102143

Cited by 12 publications

(3 citation statements)

References 13 publications

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“…The higher concentration of HCO 3 and TOC in DJ04 ( Figure 1C ) as well as their strong correlation with the bacterial community as depicted in the CCA plot ( Figure 4 ) and Pearson analysis ( Figure 6B ) explains the possible mixing of runoff water from the leaf biomass litter. This leaf biomass has growth-promoting effects, shaping the microbial communities, with a significant cellulose degrader content ( Bhandari and Nayal, 2007 ; Wan et al, 2015 ; López-Rebollar et al, 2021 ). When compared, the microbial diversity is found to be relatively higher in DJ04, than in DJ02, even though both are moderate temperature springs, probably owing to the higher organic matter content, and higher TDS, TOC, and HCO 3 in DJ04 ( Chan et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Bacterial Diversity and CAZyme Potential Revealed in Pandanus Rich Thermal Spring Cluster of India: A Non-cultivable 16S rRNA Sequencing Approach

et al. 2021

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In the present study, we explored four different geothermal spots of the Deulajhari spring cluster at a proximity of 10–20 meters with temperatures of 43 to 65°C to unravel their genesis, bacterial diversity and CAZyme potential. However, minor variations in physicochemical properties; TOC, sodium, chloride, zinc and nitrate were observed, including the pH of the spring openings. Illumina based amplicon sequencing revealed Firmicutes, Proteobacteria and Chloroflexi as the major bacterial phylum with higher abundance in the DJ04 sample. The alpha diversity of all the springs was almost same, whereas beta diversity revealed variations in the degree of uniqueness of OTUs at different temperatures. Statistical analysis established a positive correlation between sulfur content with Heliobacterium, Thermodesulfovibrio, Thermodesulfobacterium and Herpetosipho as well as TOC and HCO3 with Thermoanaerobacter, Desulfovibrio, Candidatus solibacter and Dehalogenimona. The major hydrocarbon family genes and Carbohydrate Active Enzyme pathways were predicted to be highest in DJ04 with elevated concentrations of HCO3 and TOC. Higher homogeneity in geo-physicochemical and microbial features direct the possibility of the common origin of these springs through plumbing systems. However, the minor variations in diversity and functionality were due to variations in temperature in spring openings through the mixing of subsurface water contaminated with carbohydrates from leaf biomass litter. Functional characterization of the thermophilic bacteria of this spring provides essential scope for further industrial applications. The biogeochemical reasons hypothesized for the genesis of unique multiple openings in the cluster are also of interest to conservation scientists for taking measures toward necessary laws and regulations to protect and preserve these springs.

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Section: Discussionmentioning

confidence: 99%

Bacterial Diversity and CAZyme Potential Revealed in Pandanus Rich Thermal Spring Cluster of India: A Non-cultivable 16S rRNA Sequencing Approach

et al. 2021

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“…The distribution of flow patterns and the aggregation of dirt in the aquaculture tank directly affect the growth environment of aquaculture objects (López-Rebollar et al, 2023;López-Rebollar et al, 2021), and hydrodynamic drive equipment should be reasonably utilized to collect the dirt directly to the outlet relying on the annular flow pattern formed by the self-cleaning ability of the aquaculture tank. Currently, scholars at home and abroad mainly carry out related research by adopting the physical test method and numerical simulation method (Labatut et al, 2015)for hydrodynamic characteristics, particulate exclusion rate (Goula et al, 2008;Zhang et al, 2024), tank structure (Zhang et al, 2022a), inlet and outlet configurations (Bajcar et al, 2011;Davidson and Summerfelt, 2004a), etc.…”

Section: Introductionmentioning

confidence: 99%

Field study on the dynamic characteristics of sewage collection in a circular aquaculture tank

Wu,

Gui,

Yang

et al. 2024

Preprint

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To solve the problem of low performance in sewage collection of the circular aquaculture tank, this paper systematically studies the influence of flow rate Q of the jet pipe, the deployment distance ratio d/r (d is the distance between the midpoint of the axis and the nearest tank wall, and r is the radius of the circular aquaculture tank), the deployment angle θ, and the structure of the jet pipe on the dynamic characteristics of sewage collection. In the field study, a high-definition camera was used to record the distribution of sewage, the distribution of the flow field in the aquaculture tank was measured by the Acoustic Doppler Velocimetry. Thus, the distance between the sewage and the center of the tank was quantified. Meanwhile, the sewage collection performance of the aquaculture tank was evaluated by comparing the maximum distance between the sewage and the center of the tank under different working conditions. The results indicated that the formation of an effective horizontal circulation in the circular aquaculture tank is the primary condition for sewage accumulation to the center of the tank, and different flow rate Q of the jet pipe, the deployment distance ratio d/r, the deployment angle θ, and the structure of the jet pipe all can affect the sewage collection effect in the tank. In the horizontal single-pipe single-hole jet pipe structure mode, the best sewage collection result was obtained at the deployment angle θ of 0°, the deployment distance ratio of 1/4, and the deployment flow rate Q of 7 L/s; when the deployment flow rate Q was less than 7 L/s, the sewage accumulated near the tank wall, and the sewage particle dispersion was relatively high. In the vertical single-pipe porous jet pipe structure mode, better sewage collection performance was obtained when the deployment flow Q was adjusted to 7 ~ 9 L/s, the deployment angle θ was set to 45°, and the deployment distance ratio d/r was set to 1/4. The sewage collection performance of the aquaculture tank under the vertical single-pipe porous jet pipe deployment mode was obviously better than that of the horizontal single-pipe single-hole jet pipe mode. The results can directly and effectively guide the inlet design of such kind aquaculture tanks to reduce the flow rate and energy consumption and improve sewage collection performance.

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“…After longduration experiments, allowing the occurrence of flocculation processes, the aggregates sizes were obtained. Then a 3D optical technique was implemented in a glass settling column because despite the progress in PIV and PTV techniques for fluid flow [7] and the success obtained characterizing rain drops [8,9] and flocs in aquaculture tanks [10], its limitation to 2D situations is a big problem. Digital Holography for Particle Tracking Velocimetry DHPTV [11] overcomes this drawback and yields the 3D characteristics of flocs.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Fractal Dimension of Suspended Sediments from Two Mexican Rivers

Mondragon

Aragón

Salinas-Tapia

et al. 2022

Water

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Sampling programs for suspended sediment were carried out in the Usumacinta River and its tributary Grijalva River in Mexico during the years 2016 and 2017. Suspended sediment samples collected during these sampling programs were analyzed in the laboratory using a Rotating Annular Flume (RAF) fitted with a Particle Tracking Velocimetry (PTV) to obtain the 2D images of the suspended sediment particles as they were undergoing floc reconstruction, and subsequently using a glass settling column fitted with inline digital holography set up to obtain 3D holograms of the fully flocculated sediment particles. From these high-resolution hologram images, the fractal dimension of the flocculated sediment particles was obtained using the classical box-counting method and an improved Triangular box-counting method. The estimated fractal dimension of flocculated sediment, which is a measure of floc compactness and structure that control the settling velocity of flocculated sediment was used to validate two empirical models to estimate the fractal dimension in terms of the floc sizes of suspended sediments of these two rivers. It is shown in this study that the floc characteristic can be analyzed in laboratory experiments after floc reconstruction with the use of an RAF and it offers a viable alternative to the costly in-situ sampling that is often carried out in ocean research. The digital holography method employed in this research offers an efficient methodology to obtain the floc fractal dimension. Regarding the innovative aspects and new contribution to science, we can say that we have developed a laboratory protocol to test river waters to establish floc properties such as fractal dimensions of flocs in this research which will help to test river waters on a routine basis with manageable costs. We can also say that we have developed models to predict the relationship between floc fractal dimension and floc size, which did not exist before.

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Performance study of annular settler with gratings in circular aquaculture tank using computational fluid dynamics

Cited by 12 publications

References 13 publications

Bacterial Diversity and CAZyme Potential Revealed in Pandanus Rich Thermal Spring Cluster of India: A Non-cultivable 16S rRNA Sequencing Approach

Bacterial Diversity and CAZyme Potential Revealed in Pandanus Rich Thermal Spring Cluster of India: A Non-cultivable 16S rRNA Sequencing Approach

Field study on the dynamic characteristics of sewage collection in a circular aquaculture tank

Estimation of Fractal Dimension of Suspended Sediments from Two Mexican Rivers

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