Wastewater Characterization of Fish Processing Plant Effluents
Wastewater Characterization of Fish Processing Plant Effluents
Wastewater Characterization of Fish Processing Plant Effluents
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waters.<br />
Effluent toxicity was demonstrated at all sites, and the range <strong>of</strong> toxicity observed at each site<br />
varied between processing days. Only four <strong>of</strong> the nine toxicity samples collected passed the 96-hr<br />
LC50 100% criteria for rainbow trout. Of the four toxicity tests carried out, the Microtox<br />
Photobacterium bacteria test was generally found to be the most sensitive to effluent samples.<br />
The wide variation in toxic responses by several organisms to a single sample illustrates that<br />
the use <strong>of</strong> a single toxicity test is not recommended. Rather, the use <strong>of</strong> a number <strong>of</strong> tests with<br />
both chronic and acute endpoints is more predictive <strong>of</strong> the toxicity <strong>of</strong> the effluent from fish<br />
processing facilities. Continued use <strong>of</strong> the algal bioassay Selenasrum test for fish processing<br />
effluent testing is not recommended as nutrients contained in the effluent stimulated algal<br />
growth, interfering with the test endpoint.<br />
FREMP 03/21/1994<br />
<strong>Fish</strong> <strong>Processing</strong> <strong>Plant</strong> Effluent ii
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