Aging of Waters in Reservoirs of the Piedmont Plateau

摘要: in the literature regard to aging process that takes place waters of artificial reservoirs. Progressive reduction color and microscopic-organism concentrations have been shown by Whipple г occur some His data show maximum content microorganism concentration first 2-3 years, a gradual decrease minimum values over 8-10 relatively constant at or near after this period. has also reported tastes odors associated with microorganisms during same period number is decreasing. Purcell 2 DO occurred second year reservoir was filled, which they increased for 9 years then stabilized level well above initial values. reciprocal relation carbon dioxide yearly changes similar those Whipple. Equations calculating rate stabilization quality water reservoirs due presented Fair.3 These give annual improvement equilibrium conditions 14 per cent 90 total years. Neel,4 however, reports presence soluble minerals these can be ex-