Process requirements for achieving full-flow disinfection of recirculating water using ozonation and UV irradiation

Summerfelt, Steven T.; Sharrer, Mark J.; Tsukuda, Scott; Gearheart, Michael

doi:10.1016/j.aquaeng.2008.10.002

Cited by 133 publications

(97 citation statements)

References 19 publications

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“…Recent research efforts have confirmed that the intestinal microbiota play an irreplaceable role in promoting host health by stimulating host nutrient acquisition, increasing immune response, and preventing pathogen colonization (Round and Mazmanian 2009; Summerfelt et al 2009). Changes in specific bacterial assemblages have been used as an indicator of human health status (Clemente et al 2012).…”

Section: Establishment Of Shrimp Age-dependent Treatment Strategiesmentioning

confidence: 97%

“…For this reason, strategies for disease control should focus on the entire community rather than on a single or a few pathogens. Traditionally, indiscriminate disinfection has been applied to kill all microbiota within the aquaculture system (Summerfelt et al 2009). This practice elevates nutrient availability and destabilizes the microbial community, thereby opening the niche (a consequent lack of competition) for the proliferation of opportunistic pathogens, such as fastgrowing pathogenic Vibrio species (Attramadal et al 2012).…”

Section: Changes In Bacterioplankton Community Associated With Shrimpmentioning

confidence: 99%

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Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Xiong

Dai

2016

Appl Microbiol Biotechnol

109

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High-density aquaculture has led to increasing occurrences of diseases in shrimp. Thus, it is imperative to establish effective and quantitative strategies for preventing and predicting these diseases. Water quality indices and investigations of specific pathogen abundance provide only a qualitative evaluation of the risk of shrimp disease and can be inaccurate. To address these shortcomings, we introduced intestinal indicative assemblages as independent variables with which to quantitatively predict incidences of shrimp disease. Given the ignorance regarding the niches differences in the shrimp intestine throughout its developmental stages, the use of probiotics in aquaculture has had limited success. Therefore, we propose the exploration of effective probiotic bacteria from shrimp intestinal flora and the establishment of therapeutic strategies dependent on shrimp age. Following ecological selection principles, we hypothesize that the larval stage provides the best opportunity to establish a desired gut microbiota through preemptive colonization of the treated rearing water with known probiotics. To employ this strategy, however, substantial barriers must be overcome.

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Section: Establishment Of Shrimp Age-dependent Treatment Strategiesmentioning

confidence: 97%

Section: Changes In Bacterioplankton Community Associated With Shrimpmentioning

confidence: 99%

Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Xiong

Dai

2016

Appl Microbiol Biotechnol

109

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“…Growth rate and feed utilization were higher in R-system than in F-system. Presumably, this was caused by a more stable water quality in R-system compare to F-system due to the ability of this system to maintain a constant water quality (Roque d'Orbcastel et al, 2009), improve waste management and nutrient recycling (Piedrahita, 2003), and hygienic (Summerfelt et al, 2009;Tal et al, 2009). …”

Section: Discussionmentioning

confidence: 99%

Effects of stocking density on growth and feed utilization of grouper (Epinephelus coioides) reared in recirculation and flow-through water system

Putra¹,

Samad²,

Hua³

et al. 2014

Afr. J. Agric. Res.

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Stocking density is well known as an important field in aquaculture. Although many studies on stocking density have been conducted, however effects of rearing grouper (Epinephelus coioides) with different densities in recirculation and flow-through system are not well known. In this study, grouper juveniles (14.22 ± 0.67 g) were reared into 100-L aquaria at 15, 20 and 25 fish/aquaria and cultivated for 70 days. Statistical analyses showed that the highest growth performances observed in group reared at high densities (25 fish/aquaria) in recirculation system (R25), with an average final body weight and length were 95.82 ± 4.24 g and 18.72 ± 1.40 cm, respectively. Significant increase in weight gain and specific growth rate and decrease in food conversion ratio were observed in R25 after 10 weeks. However, no statistically significant different was found in survival rate and condition factor in all treatments. This study found that the effects of stocking density on growth and feeding ratio were higher in recirculation system compared with flow-through system. Further analysis determined that high stocking density in recirculation system and medium density in flow-through could affect the growth, feeding and fish behavior of this species.

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“…Water rich in particulate matter and other UV absorbing substances reduces the UV penetration and, therefore, its effectiveness. Treating the culture water with ozone followed by UV irradiation can result in "practically complete disinfection" of the total heterotrophic bacteria count [18]. The UV irradiation then both acts as a disinfectant, as well as destroying remaining ozone.…”

Section: Ozone Additionmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 3: The Technical Solutions of Controlling N Compounds, Organic Matter, P Compounds, Metals, Temperature and Preventing Disease

Vilbergsson

Oddsson

Unnþórsson

2016

Water

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This is the third part of the taxonomy of technical solutions and treatment functions in aquaculture. This article builds on the premiss that the aquaculture production system can be viewed as a transformation process with three sets of functions, input, treatment and output. This work creates an overview of all of the technical solutions of treatment functions for the purpose of both design and further research. This is done with a comprehensive literature review where all technical solutions are identified and then categorized into a taxonomy. The result is a visual taxonomy of the treatment functions controlling N compounds, organic matter, P compounds, metals, temperature and preventing disease. A total taxonomy is finally presented where the results from Part 2 and Part 3 (this part) have been combined.

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Process requirements for achieving full-flow disinfection of recirculating water using ozonation and UV irradiation

Cited by 133 publications

References 19 publications

Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Effects of stocking density on growth and feed utilization of grouper (Epinephelus coioides) reared in recirculation and flow-through water system

Taxonomy of Means and Ends in Aquaculture Production—Part 3: The Technical Solutions of Controlling N Compounds, Organic Matter, P Compounds, Metals, Temperature and Preventing Disease

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