Disease |
(Environmental Engineering) Any impairment of the normal function of an organism. |
Disinfection |
(Environmental Engineering) The destruction or inactivation of pathogenic microorganisms. See sterilization. |
Dissolved oxygen (DO) |
(Environmental Engineering) The amount of molecular oxygen dissolved in water. |
Dump |
(Environmental Engineering) An illegal and uncontrolled area where wastes have been placed on or in the ground. See Landfill. |
Ecology |
(Environmental Engineering) The study of living organisms and their environment or habitat. |
Ecosystem |
(Environmental Engineering) An organism or group of organisms and their surroundings. The boundary of an ecosystem may be arbitrarily chosen to suit the area of interest or study. |
Effluent based standards |
(Environmental Engineering) Standards which set concentration or mass per time limits on the effluent being discharged to a receiving water. |
Electronegativity |
(Environmental Engineering) The potential of an atom to attract electrons when the atom is bonded in a compound. The scale is 0 to 4 with 0 being the most electropositive (low attraction) and 4 being the most electronegative (high attraction). |
Electrostatic precipitator |
(Environmental Engineering) A device which uses an electric field to trap particulate pollutants. |
Elementary reaction |
(Environmental Engineering) A reaction in which the rate expression corresponds to the stoichiometric equation. |