Stringed bed suspended bioreactors (SBSBR) for in situ nitrification in penaeid and non-penaeid hatchery systems |
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| Authors: | V J Rejish Kumar Cini Achuthan N J Manju Rosamma Philip I S Bright Singh |
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| Institution: | (1) National Center for Aquatic Animal Health, Cochin University of Science and Technology, Lake Side Campus, Fine Arts Avenue, Cochin, 682016, India;(2) Department of Marine Biology, Microbiology and Biochemistry, School of Ocean Science and Technology, Cochin University of Science and Technology, Lake Side Campus, Fine Arts Avenue, Cochin, 682016, India; |
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| Abstract: | For establishing nitrification in prawn (non-penaeid, salinity 10–15 ppt) and shrimp (penaeid, salinity 30–35 ppt) larval
production systems, a stringed bed suspended bioreactor (SBSBR) was designed, fabricated, and validated. It was fabricated
with 5 mm polystyrene and low density polyethylene beads as the substrata for ammonia and nitrite oxidizing bacterial consortia,
respectively, with an overall surface area of 684 cm2. The reactors were activated in a prototype activator and were transported in polythene bags to the site of testing. Performance
of the reactors activated with the nitrifying bacterial consortia AMONPCU-1 (ammonia oxidizers for non-penaeid culture) and
NIONPCU-1 (nitrite oxidizers for non-penaeid culture) was evaluated in a Macrobrachium rosenbergii larval rearing system and those activated with AMOPCU-1 (ammonia oxidizers for penaeid culture) and NIOPCU-1 (nitrite oxidizers
for penaeid culture) in a Penaeus monodon seed production system. Rapid setting up of nitrification could be observed in both the static systems which resulted in
a higher relative per cent survival of larvae. |
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