6 



a 



a 

 o 



CD 



SEWAGE + DEAD ALGAE 

 L5-6.5, La-7.8 



SEWAGE + LIVING ALGAE 

 L5-5. 



Lr-2.5, La-3.3 



Bartsch, 1958 



8 



2 U 6 



t, DAYS 



NFLUENCE OF ALGAE ON BOD 



Fi flure 13 



10 



Acknowledgment 



The data used in preparation of Figures 10-13 were obtained jointly with Dr. W. M. Ingram, 

 Dr. E. C. Tsivoglou, and Mr. D. G. Ballinger, all of the Sanitary Engineering Center. Their willing- 

 ness to allow the information to be used here is gratefully acknowledged. 



69 



