CONTRIBUTIONS REGARDING PURIFICATION OF THE SURFACE WATERS FROM VRANCEA COUNTY
NEDELCU CRISTINA*, CIOBANU DOMNICA** *APPLIER FOR ENGINEERING SCIENCE " GH. ASACHI "UNIVERSITY IAĆI, PROFESSOR DOCTOR ENGINEER IN THE CHEMISTRY LABORATORY OF THE ENVIRONMENT PROTECTION UNIVERSITY OF BACÄU
As part of the economic and ecologic system, the quality of waters exerts a great number of functions relating to the assurance of the environment for the natural aquatic fauna and flora. The evolution of the waters quality for seven areas of local interest in Vrancea county from over a four years periods, 1996 -2000, it emphasized values for the oxygen index (RO). These are analyzed using the method of three determinations (CBOs, CCOMn, CCOCr) and there were pointed out exceeds over the limit of 30%, the case being related to industrial polluting system.
