Recirculating Aquaculture Systems - RAS

Nitrification Principle / Field Trials of Nitrification Efficiency

Nitrification in a broodstock maintenance system connected to Packed Bed Bioreactor

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  • System is operated without water exchange
  • Ammonia-nitrogen and nitrite-nitrogen concentrations consistently remain at an average level of 0.3ppm and does not exceed 0.6ppm
  • Nitrate concentration does not increase beyond 7ppm due to denitrification, which has been experimentally established as one of the characteristics of the consortia.
  • Consequently the technology eliminates the requirement of introducing a distinct denitrifying system to facilitate nitrate removal.
  • Precisely there is total removal of nitrogen from the Recirculating Aquaculture System.

Activation of PBBR integrated to Penaeus monodon maturation system – Duration required for activation

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Within seven days the reactor could be made fully functional.

TAN, NO 2 -N and NO3-N in an experimental Penaeus monodon brood stock maintenance system during quarantine integrated with SBSBR

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Figure showing the utility of the SBSBR in Brood Stock quarantine system.

All the 6 reactors that constitute the PBBR exhibited ammonia consumption of ˜ 1ppm/hr (Fig 1 (a), (b) & (c)), and the rate of consumption increased with the strength of the substrate.

All the 6 reactors that constitute the PBBR exhibited Nitrite consumption of ˜ 2ppm/hr (Fig 2 (a), (b) & (c)), and the rate of consumption increased with the strength of the substrate .

The increase in the substrate concentration resulted in the increased substrate consumption.


Fig 1(a)

 


Fig 1(b)


Fig 1(c)

 

Fig. 1(a), Fig 1(b), and Fig 1(c) : Ammonia removal by the reactors under varying substrate concentrations (a = 2 ppm, b = 5 ppm, c = 10 ppm). R1 to R6 refer to the six reactors that constitute the PBBR.

About Us

Oriental Aquamarine Biotech (India) P Ltd offers a patented NITRIFYING BIOREACTOR TECHNOLOGY FOR THE ESTABLISHMENT OF RECIRCULATING AQUACULTURE SYSTEMS (RAS). Scientists at the National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Kochi (www.ncaah.org) developed the technology with funding from the Department of Biotechnology, Government of India, New Delhi.

The Nitrifying Bioreactor technology facilitates management of water...

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Recirculating Aquaculture Systems (RAS)

Recirculating aquaculture systems, or RAS, are closed-loop production systems that continuously filter and recycle water, enabling large-scale fish farming that requires a small amount of water and releases little or no pollution.

Get in Touch with Us

+91 422 2608943

mohan@nitrifying-bioreactor.com

U-7, Kovaipudur, Coimbatore - 641042