Design, Fabrication and Standardisation of a Depuration System for Bivalves

Damodaran Nambudiri D.; Bright Singh I.S.; Sajan George; Sherief P.M.; Maniappan C.; Ayoob T.M.

doi:10.56093/ft.v32i2.23965

Authors

Damodaran Nambudiri D. College of Fisheries, Panangad
Bright Singh I.S. School of Environmental Studies, Cochin University of Science & Technology
Sajan George College of Fisheries, Panangad, Cochin
Sherief P.M. College of Fisheries, Panangad, Cochin
Maniappan C. Ice & Freezing Plant, Matsyafed, Cochin
Ayoob T.M. Saudi Fisheries Co., Dammam

https://doi.org/10.56093/ft.v32i2.23965

Keywords:

Depuration system, bivalves, Villorita cyprinoides, Escherichia coli.

Abstract

A depuration system was designed and fabricated for cleaning of bivalves. The unit consisted of a depuration chamber, biological filter and UV sterilizer. The system was evaluated based on trial studies conducted using Villorita cyprinoides. Escherichia coli was used as the indicator bacteria. Seeding of the animals by bacteria was carried out using sea water of 10%o salinity and a bacterial concentration of 1x10' cfu ml'1. On 6 h exposure of clams to the E. coli cell suspension, seeding was achieved to the desired level (6.69 x 10" cfu g"1)- On depuration of seeded V. cyprinoides for a period of 15 h using the depuration system complete elimination of E. coli could be achieved.