Wastewater Characterization of Fish Processing Plant Effluents

contaminated waste stream to the reduction plant. This is expected to result in a substantial
reduction of the BOD, TSS, oil and grease, and other pollutant loadings from the BC Packers
facility. The vast majority of the BOD in blood is due to dissolved organic material which cannot
be removed by screening.
4.2.4 Review of Existing Data
Monthly monitoring of BOD, TSS, oil and grease, temperature and residual chlorine is required
by MOELP Permit (Appendix A). A review of the historical data indicates that BC Packers facility
is operating within the limits of its discharge permit. Recorded flows were in compliance with
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the average flow limit of 4500 and maximum flow limit of 11800 m /day specified in the Permit.
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Water consumption ranged from 0.3 to 111 m /tonne of processed fish with a geometric mean value
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of 15 m /tonne of processed fish.
Recorded residual chlorine concentrations ranged from 0.01 to 3.29 mg/L. The records show the
residual chlorine concentration decreased from 1990 through 1992. In 1992 the residual chlorine
concentration of 0.05 mg/L (specified by Permit) was met most of the time as a result of operation
of a dechlorination facility. The permit limit was never exceeded during the 1993 processing
year. It is expected that the limit for residual chlorine will be met in the future as BC Packers
has stopped canning salmon (the salmon canning process uses chlorinated retort cooling water).
The Permit requirement for the cooling water temperature to be below 32 EC was always satisfied.
The effluent BOD and TSS concentrations ranged from 13 to 1290 mg/L, and from 20 to 787 mg/L,
respectively.
4.3 Great Northern Packing Ltd.
4.3.1 Facility Description
FREMP 03/21/1994
Fish Processing Plant Effluent 33