COLLINS and TENNEY: FISHERY WASTE EFFLUENTS 



possible, thus the other calculated values that are 

 based on an ideal regression line should be more 

 valid than those obtainable by direct analysis. 

 Although this system may suggest doing the FR 

 rather than the CODpR, we believe that one direct 

 analysis for COD is desirable, since the effect of 

 oxygen demand on the receiving water is an 

 important parameter of a monitoring program. 

 Although O&G were not specifically considered 

 except for salmon, for which we had limited data, 

 the COD and residue data imply that O&G are 

 related and that a regression line could be cal- 

 culated. 



In conclusion, it appears that in-plant monitor- 

 ing for CODpK and TR and the application of 

 proper correlation factors and equations 

 previously determined for the plant effluent will 

 give reportable data on CODxr, COD^fr. CODpR, 

 TR, FR, and NFR. The suggested analyses can be 

 done at reasonable cost with simple equipment, 

 are capable of good precision and accuracy, and 

 can be conducted by quality assurance personnel 

 in the fishing industry. We suggest, recognizing 

 the limitations of our data and obvious and known 

 differences between processing plants and 

 processing methods, that if regression lines or 



correlations similar to those given in this paper 

 were determined, the resulting monitoring system 

 would be simpler and more accurate than that 

 currently in use. 



In a subsequent paper, we will report regression 

 data for protein and O&G similar to that suggest- 

 ed in this paper and a method using a simultan- 

 eous equation to calculate protein and O&G from 

 TR and COD data. 



LITERATURE CITED 



Colons, J. 



1976. Oil and grease: A proposed analytical method for 

 fishery waste effluents. Fish. Bull., U.S. 74: 

 Environmental Protection Agency. 



1974. Methods for chemical analysis of water and wastes. 

 Environ. Prot. Agency, OflF. Tech. Transfer, Meth. Dev. 

 Qual. Assurance Res. Lab., Natl. Environ. Res. Cent. 298 p. 



HoRWiTZ, W. (chairman and editor). 



1965. Official methods of analysis of the Association of 

 Official Agricultural Chemists. 10th ed. Association of 

 Official Agricultural Chemists, Wash., D.C., xx+ 957 p. 

 Moore, W. A., R. C. Kroner, and C. C. Ruchhoft. 



1949. Dichromate reflux method for determination of ox- 

 ygen consumed. Anal. Chem. 21:953-957. 

 Pojasek, R. B. 



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