Abstract
BOD in sea water was studied in order to investigate the biodegradability of various organic compounds and self-purification in sea water. The BOD5 values of the 7 | organic compounds which commonly exist in environment or produced in large quantities for commercial use were measured by the sea water dilution method (S.W.D.M) and the standard dilution method (S.D.M), and compared with each other. In addition to the BOD5 value, BOD10, BOD15 and BOD20 values of several organic compounds were measured and also compared each other.
The BOD of 1 : 1 mixture of glucose and L-glutamic acid was continuously measured by the S.W.D. M and the S.D.M for 10-20 days in order to investigate the temperature effect in sea water compared with the fresh water. Time lag (t0), kinetic constant (k) and the ultimate BOD value (L) were calculated by the Thomas's slope method. The difference of BOD reaction of the sea water and the fresh water was considered by these results. The BOD in sea water was slightly lower than that obtained in fresh water. The data of BOD, COD Mn and Adenosine triphosphate (ATP) determined by ATP Photometer in Osaka Bay were compared.
