REDUCTION DE SULFATE SANS ASSIMILATION EN TANT QUE PROCESSUS VISANT A PROMOUVOIR LA DENITRIFICATION DANS DES SYSTEMES D'AQUACULTURE A RECIRCULATION MARINS

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专利权人:

UNIVERSITY OF MARYLAND BIOTECHNOLOGY INSTITUTE

发明人:

SCHREIER, HAROLD J.,TAL, YOSSI

申请号：

CA2554958

公开号：

CA2554958C

申请日:

2005.01.31

申请国别(地区):

CA

年份:

2013

代理人:

摘要：

The present invention relates to a novel approach for nitrate removal from amarine recirculating system (10) wherein high concentrations of sulfate foundin seawater is used in combination with sludge (20) collected from fishgrowing tanks (12) to promote dissimilatory sulfate reduction to hydrogensulfide. The sulfide is used as an electron source to promote autotrophicdenitrification in an up-flow fix bed bioreactor (16), followed bynitrification in a nitrification unit (14). By utilizing the symbioticrelationship between the sulfate-reducing and sulfide-oxidizing bacterialcommunity, nitrate accumulation is controlled in the recirculating water ofthe system thereby reducing water exchange in the marine recirculating system.

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