Performance of a constructed wetland in treating brackish wastewater from commercial recirculating and super-intensive shrimp growout systems

Shi, Yonghai; Zhang, Genyu; Liu, Jianzhong; Zhu, Yazhu; Xu, Jiabo

doi:10.1016/j.biortech.2011.07.058

Cited by 38 publications

(14 citation statements)

References 20 publications

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“…This type of shrimp farming is still being developed, and there are a variety of systems. Recent studies have tried to evaluate the optimal conditions for increasing biomass production (Wasielesky et al 2006;Vinatea et al 2010;Shi et al 2011;Hostins et al 2015). However, few studies have examined the balance of costs and benefits of closed-system culture under commercial production, and ways of attaining optimal economic management and addressing unforeseen problems when this type of aquaculture is adopted have not been sufficiently explored.…”

Section: Introductionmentioning

confidence: 99%

Bio-economic analysis of super-intensive closed shrimp farming and improvement of management plans: a case study in Japan

Shinji

Nohara²,

Yagi

et al. 2019

Fish Sci

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Crustacean aquaculture is a multibillion-dollar industry worldwide that continues to show significant growth. Shrimp farming has been intensified for decades, and super-intensive closed culture systems have now been developed to improve productivity and reduce environmental burdens. Here, we used bio-economic approaches to investigate the mechanisms and economic productivity of shrimp farming. We used three steps: (1) path analysis by using structural equation models to determine the candidate factors associated with productivity; (2) modeling of population dynamics and profits; and (3) simulations based on the models to clarify the productive characteristics of a super-intensive closed culture system. Our findings suggest that the population dynamics of the system were limited by unidentified factors that differed from those found in many experimental studies, such as water temperature, salinity, dissolved oxygen, and nitrogenous waste. The unidentified factors were related to the number of days of rearing and cumulative biomass mortality. The production plan suggested by our simulation required frequent culture rotation to increase profits. Our case study provides important practical information about the characteristics of super-intensive shrimp farming, implications for efficient economic management, and new research subjects for the future.

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Section: Introductionmentioning

confidence: 99%

Bio-economic analysis of super-intensive closed shrimp farming and improvement of management plans: a case study in Japan

Shinji

Nohara²,

Yagi

et al. 2019

Fish Sci

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“…Probiotic bacteria depend on suspended solids as a substrate for adhesion and as a source of energy from carbon in Biofloc systems [ 49 ]. To ensure efficient bacterial activity and a good system to control ammonia, total suspended solids should be maintained in the range of 250–450 ppm and organic load to be 5–15 mg L − 1 [ 50 ]. Dissolve oxygen should be maintained at 7–8 ppm to ensure the proper functioning of the system due to the oxygen demand of algae and bacteria in the Biofloc system [ 51 ].…”

Section: Environmental Sensorsmentioning

confidence: 99%

Development of top-dressing automation technology for sustainable shrimp aquaculture in India

Chellapandi

2021

Discov Sustain

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Globally, the shrimp farming industry faces increasing challenges and pressure to reduce the broken shrimps and maintain a healthier pond environment. Shrimps lack an adaptive immune system to combat invading pathogens due to an imbalance in beneficial gut microbiota. The use of top-dressing agents like probiotics and pond optimizes is an alternative strategy to improve the innate immune system leading produce disease-free shrimp in international markets. The cost of top-dressing agents is accounted for 20% of the production cost and therefore, the development of top-dressing automation technology is important to maintain and improve the financial and environmental viability of shrimp sustainable farming. This perspective described several sensor-based aquaculture technologies for on-farm management systems but sustainability in the aquaculture industry is not yet achieved in practice. The present technology is a new invention to reduce labor and production costs required for reducing bacterial and organic loads in Biofloc shrimp cultures. Aquaculture automation system disperses the top-dressing agents to the shrimp ponds based on the signals received from microbial and environmental sensors. Continuous monitoring of shrimp growth, mortality, immune responses, diseases, and pond water quality parameters will fetch larger profits with additional savings on labor and production costs for sustainable shrimp aquaculture in India.

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“…Several biotic and abiotic processes regulate pollutant removal in an aquaponics system using constructed wetlands (Shi et al 2011). Among the biological processes, we have microbial mineralization and transformation (e.g., nitrification-denitrification) and uptake by vegetable, whereas chemical precipitation, sedimentation, and substrate adsorption are included in abiotic processes (Lin et al 2005).…”

Section: Water Quality and Growth Of Hydroponic Cropsmentioning

confidence: 99%

Performance of an aquaponics system using constructed semi-dry wetland with lettuce (Lactuca sativa L.) on treating wastewater of culture of Amazon River shrimp (Macrobrachium amazonicum)

Lima¹,

Duarte

Bastos³

et al. 2019

Environ Sci Pollut Res

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Aquaponics is a science that integrates animal aquatic production with vegetable culture in recirculating water systems. The performance of an aquaponics system using constructed semi-dry wetland with lettuce (Lactuca sativa L.) planted on treating wastewater of culture of shrimp Macrobrachium amazonicum was evaluated. Each aquaponics module consisted in four culture tanks (1 m 3 tank −1), conical sedimentation tank (0.1 m 3), circular holding tank (0.2 m 3), and constructed semi-dry wetland (0.2 m × 1.0 m × 4.0 m). Post larvae (PL) shrimps with an initial average mass of 314 ± 4.75 mg were stocked at density treatments in quadruplicate: (A) 40 shrimps m −2 , (B) 80 shrimps m −2 , and (C) 120 shrimps m −2. Our results showed the average final mass of shrimps had a slight reduction at the density 80 and 120 shrimps. However, it did not differ significantly between the treatments. The ultimate survival and productivity were higher in density 80 and 120 shrimps. The maximum biomass productivity occurred at the treatment with density 120 shrimps. The aquaponics recirculation system using constructed semi-dry wetlands with lettuce adequately treated the water at the densities tested. Various water quality parameters were deemed suitable for shrimp culture, but for lettuce not, especially the temperature. The shrimp density was inappropriate which limited the system to accumulate and increase the concentration of nutrients to vegetables with lessening the yield. Nonetheless, the system with higher density has higher nutrient content that plants demonstrated significantly better growth and yield. The results showed the potential use of organics waste generated in a family lettuce hydroponic production, but for a commercial production is indicated supplementation with nutrients like calcium, magnesium, and potassium in the water.

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Performance of a constructed wetland in treating brackish wastewater from commercial recirculating and super-intensive shrimp growout systems

Cited by 38 publications

References 20 publications

Bio-economic analysis of super-intensive closed shrimp farming and improvement of management plans: a case study in Japan

Bio-economic analysis of super-intensive closed shrimp farming and improvement of management plans: a case study in Japan

Development of top-dressing automation technology for sustainable shrimp aquaculture in India

Performance of an aquaponics system using constructed semi-dry wetland with lettuce (Lactuca sativa L.) on treating wastewater of culture of Amazon River shrimp (Macrobrachium amazonicum)

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