Recirculating Aquaculture Technologies

AbstractRecirculating aquaculture technology, which includes aquaponics, has been under development for the past 40 years from a combination of technologies derived from the wastewater treatment and aquaculture sectors. Until recently, recirculating aquaculture systems (RAS) farms have been relatively small compared with other types of modern aquaculture production. The last two decades have seen a significant increase in the development of this technology, with increased market acceptance and scale. This chapter provides a brief overview of the history, water quality control processes, new developments and ongoing challenges of RAS.

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Biochar-immobilized Sphingomonas sp. and Acinetobacter sp. isolates to enhance nutrient removal: potential application in crab aquaculture

Aquaculture Environment Interactions ◽

10.3354/aei00364 ◽

2020 ◽

Vol 12 ◽

pp. 251-262

Author(s):

Y Shao ◽

H Zhong ◽

X Mao ◽

H Zhang

Keyword(s):

Water Quality ◽

Quality Control ◽

Inorganic Nitrogen ◽

Ammonia Nitrogen ◽

Experimental Methodology ◽

Bacterial Strains ◽

Water Quality Control ◽

Surrounding Water ◽

Recirculating Aquaculture ◽

Recirculating Aquaculture Systems

The frequency of water exchange and reducing the risk of eutrophication to surrounding water bodies have always been water-quality control issues in recirculating aquaculture systems. In this study, maize straw biochar prepared through pyrolysis showed great potential for both bacterial immobilization and pollutant adsorption. Heterotrophic bacterial strains of Sphingomonas sp. PDD-57b-25 and Acinetobacter towneri were isolated in situ from wastewater for pollutant remediation through a 16S rDNA-based method, which has been rarely reported to date. The selected strains had higher ammonia nitrogen (NH4+-N, 63%), nitrite nitrogen (NO2--N, 38%), nitrate nitrogen (NO3--N, 25%) and total phosphorus (TP, 35%) assimilation capacities than those of other widely applied bacteria under similar medium conditions. In addition, more NH4+-N (+16%), NO2--N (+14%), NO3--N (+17%) and TP (+19%) was removed by biochar-immobilized isolated strains than dissociated strains, suggesting their use may provide a means of improving water-quality control in recirculating aquaculture. With specific additions (4 g l-1) of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri, the dissolved inorganic nitrogen (approximately 0.45 mg l-1) and TP (approximately 0.09 mg l-1) levels were maintained below the clean water threshold for recirculating aquaculture of crab Eriocheir sinensis. Furthermore, the added strains exhibited high bio-safety and were capable of improving the yield and quality of crabs. Results indicate the potential applicability of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri in agricultural sewage treatments. Further, the experimental methodology developed here may be used for the exploration of new strains for practical aquaculture.

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Integrated Membrane Bioreactor for Water Quality Control in Marine Recirculating Aquaculture Systems

Separation Science and Technology ◽

10.1080/01496395.2013.774818 ◽

2013 ◽

Vol 48 (12) ◽

pp. 1758-1767 ◽

Cited By ~ 5

Author(s):

A. B. Holan ◽

P.-A. Wold ◽

G. Øie ◽

T. O. Leiknes

Keyword(s):

Water Quality ◽

Quality Control ◽

Membrane Bioreactor ◽

Water Quality Control ◽

Recirculating Aquaculture ◽

Recirculating Aquaculture Systems

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Water-Quality Control, Monitoring and Wastewater Treatment in Lithuania 1950 to 1999

AMBIO ◽

10.1579/0044-7447-30.4.297 ◽

2001 ◽

Vol 30 (4) ◽

pp. 297-305 ◽

Cited By ~ 3

Author(s):

Anolda Cetkauskaite ◽

Dmitry Zarkov ◽

Liutauras Stoskus

Keyword(s):

Water Quality ◽

Quality Control ◽

Wastewater Treatment ◽

Water Quality Control

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HOW THE PALO ALTO REGIONAL WATER QUALITY CONTROL PLANT INCORPORATED ENVIRONMENTAL SUSTAINABILITY INTO ITS WASTEWATER TREATMENT PLANNING

Proceedings of the Water Environment Federation ◽

10.2175/193864707787960288 ◽

2007 ◽

Vol 2007 (16) ◽

pp. 2719-2747

Author(s):

Emmalynne Hu ◽

Daisy Stark

Keyword(s):

Water Quality ◽

Quality Control ◽

Wastewater Treatment ◽

Treatment Planning ◽

Environmental Sustainability ◽

Control Plant ◽

Palo Alto ◽

Water Quality Control ◽

Regional Water

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Present state of municipal wastewater treatment in Slovakia

Water Science & Technology ◽

10.2166/wst.1994.0223 ◽

1994 ◽

Vol 30 (5) ◽

pp. 49-58

Author(s):

J. Námer ◽

L. Hyánek

Keyword(s):

Water Quality ◽

Quality Control ◽

Wastewater Treatment ◽

Present State ◽

Municipal Wastewater ◽

Slovak Republic ◽

Water Quality Management ◽

Process Efficiency ◽

Municipal Wastewater Treatment ◽

Water Quality Control

This paper reviews the present state of municipal wastewater treatment in the Slovak Republic. A comprehensive approach was applied to the problem; particular elements of water quality control systems were studied and subsequently their interactions were considered. Analysis of available data in this field shows the serious problems concerned with the performance and maintenance of existing sewer systems and wastewater treatment plants as well as with their process efficiency and impact on the water quality of receivers. The significant influence of groundwater infiltration and industrial wastewaters on municipal wastewater quality and their impact on effluent quality are documented. All these facts were evaluated and priorities were set for improving the water quality control and the utilization of integrated urban water quality management, keeping in mind the typical socio-economic problems encountered during the transition of post-communist countries.

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