Aquaculture nitrogen waste removal

Animal husbandry – Aquatic animal culturing – Aquarium

Reexamination Certificate

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Details

C119S260000, C210S602000

Reexamination Certificate

active

07082893

ABSTRACT:
The present invention relates to a two-stage biofilter reactor system for removing nitrogenous compounds from a recirculating aquaculture system. The system includes a aerobic nitrification unit and a downstream anaerobic denitrification unit, wherein both units have a mobile bed of suspended media whereon bacteria can grow and reduce nitrate and/or ammonia levels in the recirculating aquaculture system. Use of the two-stage system has the advantage of reducing the water exchange rates and consumption of salt when maintaining a saline effluent.

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Rusten, B., et al. “Pilot testing and preliminary design of moving bed biofilm reactors for nitrogen removal at the FREVAR wastewater treatment plant.” Water Science and Technology, vol. 41, (2000), pp. 13-20.
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