Depuration of molluscs
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The experimental system put up at SEAFDEC [Southeast Asian Fisheries Development Center; Philippines] consisted of six rectangular (96 x 196 x 42 cm) fiberglass-coated tanks made of marine plywood. It can depurate about 230 to 310 kg bivalves in two days. Initial findings showed that under normal seawater conditions (salinity 29-32 ppt, temperature 27-30 degrees Celsius; oxygen content 3-6.2 mg/L; and pH 7.4-8.3) and moderate rate of flow (7-10 L/min), highly contaminated oysters (MPN 1.0 x 10 to the fifth power to 2.0 x 10 to the sixth power/100 g meat) can be depurated within 48 hr or less. A short flume type of tank with a volume of about 250 L was designed, tested and showed to cleanse oysters under normal conditions in only 24 hr with a flow rate of 7L/min and with very little resulting mortality. More important, the tank can be lifted and moved by only two men of average body built.
Gacutan, R. Q., Bulalacao, M. L., & Vizcarra, A. T. (1987). Depuration of Molluscs. In M.-A. A. Mañgaser & C. M. Lantican (Eds.), Status of Mollusc Resources and Prospects for Development. Proceedings of the Seminar-Workshop on Status of Mollusc Resources and Prospects for Development, Ecotech Center, Cebu City, May 2-3, 1986 (pp. 95–100). Los Baños, Laguna : Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, Bureau of Fisheries and Aquatic Resources.