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vol-13IMPACT OF SEWAGE DISCHARGE ON TIlE WATEll QUALITY
OF TilE EASTERN IIARDOUR OF ALEXANDRIA.
11- OXYGEN STUDIES.
N.M. IJOWIUARj A.n. ASDEL-MOATIj P. EL-NADY AND
T.A. ABOUL-KASSIM.
Oceanography Department. Faculty of Science. Alexandria University. Egypt.
ADS1’RACT
Dissolved oxygen. biochemical oxygen demand
and permenganate values have been used as pollution
indices in a heavily polluted basin. the Eastern
Harbour of Alexandria. SUffering from sewage
discharge. The spatial and seasonal variation as
well as the factors affecting the distribution
of these variables were studied. Anoxia rarely
appeared near the botto~ layer. The population
equivalent for the effluent water was 6.33. With
regards to the continuous 1ncr~ase in the quantity
of sewage. this value Is expected to be tripled
between now and year 2000. The BOO/PV ratio of
the Harbour water lndicateq that most of the sewage
reaching the Harbour is biodegradable.
