TABLE OF CONTENTS Pages Symposium 1 - the National Sea ...

achieve continuous production, facility biomass, number of fry or juveniles needed per
batch, daily feed requirements, and the daily oxygen requirements for fish respiration and
biofiltration. These parameters provide the basis for the sizing of the equipment in a landbased
facility. The layout in Figure 1 shows the major unit operations in a recirculating
facility. Each will be discussed in more detail in the following section. The requirements
and growth parameters for Atlantic halibut and rainbow trout have so far been included in
the database of the program.
Figure1: Simplified Land-Based Recirculating Facility Layout
Water Source: Since the purity of the incoming water is site specific, it is assumed that the
water from the source does not need any treatment before entering the facility. Pumping
head from the source is needed to determine pumping requirements. A default value of
15m is included. The flow of makeup water is taken to be 4% of the facility flow rate (i.e.
recirculating rate of 96%).
Heating: To maintain optimal water temperatures in the facility incoming water is either
heated or cooled depending on the requirements of the fish and the temperature profile of
the water source. A default temperature profile is included and can be modified. The
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