NMFS NUMBER: 96-NWR-015
Optimal Design of a Water Recirculating System for Shellfish
Depuration (and Wet Storage)
Shulin Chen and James Durfey
March 22, 2000
National Marine Fisheries Service, Northwest Region, 7600
Sand Point Way, N.E., BIN C15700, Seattle, Washington
98115-0070. TELEPHONE: (206) 526-6115
This goal of
this project was to develop a closed, recirculating shellfish
depuration system that is cost-effective and environmentally
sound and that meets sanitation and other regulatory requirements.
The project was a collaborative effort between Washington
State University and a shellfish producer (Taylor Resources,
Inc., of Shelton, Washington). The proposed research
tasks were accomplished. Major results obtained
include waste excretion rates of Manilla clams under different
temperatures, nitrification kinetics models and kinetics
parameters, and UV disinfection efficiency and pertinent
factors. Values for a series of parameters were
defined and recommended through this research project
for design and operation of recirculating depuration/wet-storage
systems. A commercial-scale wet-storage system was
designed and constructed at Taylor Resources, Inc.
Evaluation of the system showed satisfactory performance.
The products of the project also included six manuscripts
for refereed journal papers, one Master's thesis, and
five conference presentations.