9420.pdf

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installation of shut-off nozzles on clean-up hoses;
replacement of high-volume/low-pressure hoses with low-volume/high-pressure
washers. High-pressure hoses should be used only after sufficient dry cleanup;
installation of low-flow nozzles on equipment sprays;
reduction of water pressure on equipment spray nozzles;
shutting off all ‘water flow during breaks, with the exception of water used for
cleanup;
reuse of retort cooling water for fluming of offal, if dry transport of offal is not
possible;
prompt repair of leaking equipment and pipes;
use of in-place-cleaning systems when possible;
use of sex sorters (for roe herring processing only);
implementation of water recycling;
water metering.
As outlined in Section 5.2.2, water conservation practices should not compromise plant
sanitation, and must be in agreement with regulatory requirements.
Dry clean-up includes the following:
● cleaning of dressed fish using vacuum hoses connected to a cyclone separator
followed by discharge of the collected blood and offal to the offal hopper rather
than into the wastewater collection system;
● cleaning of floor spills with squeegees (into pans) to prevent them from entering
drains;
● use of stiff brooms to clean floor prior to wash down;
● cleaning of equipment by hand or with stiff brushes prior to wash down.
Dry transport of offal generally refers to the use of conveyors in place of flumes or wet
pumps. Such modifications are generally associated with substantial reductions in the
contaminant loads.
Water recycling is a component of water conservation which should only be implemented
if the quality and safety of the product will not be compromised. Recycled water should
move from clean operations to less clean operations. In the traditional system, water
enters the plant, flows through each process step, and is discharged as waste. The
reuse system collects wastewater from all processing steps, treats it, and then recycles
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