| 摘要 |
A method and apparatus for determining nitrification effectiveness of activated sludge in an aqueous solution, includes supplying equivalent quantities of an activated sludge, an aqueous solution, and a gas containing oxygen to each of first and second reaction vessels; simultaneously delivering a nitrification inhibitor to only the second reaction vessel; performing a bacterial respiration reaction in the vessels for either a preselected period of time or continuously in which case the materials are supplied per unit of time so that the bacterial respiration reaction in the first reaction vessel, where oxygen consumption as a result of total bacterial respiration occurs and includes oxygen consumption as a result of endogenous respiration, oxygen consumption as a result of nitrification, and oxygen consumption as a result of degradation of carbon compounds, may be compared with the respiration reaction in the second reaction vessel where oxygen consumption includes oxygen consumption as a result of endogenous respiration, and oxygen consumption as a result of degradation of carbon compounds, but where oxygen consumption as a result of nitrification is at least inhibited; measuring oxygen content for each of the vessels after the same reaction time either above the respective aqueous solutions or continuously in respective waste gas streams escaping from the respective reaction vessels to obtain at least one measured value for the respective vessels of one of oxygen content or a variable derived therefrom; determining the nitrification effectiveness of the activated sludge per unit quantity thereof by subtracting the measured values for the second reaction vessel from the first reaction vessel to provide a difference value; supplying the equivalent preselected quantities of an activated sludge including nitrifying bacteria, pure water, and a gas containing oxygen to a third reaction vessel; and performing a bacterial respiration reaction in the third reaction vessel for either the predetermined period of time or continuously so that the bacterial respiration reaction in the third reaction vessel where oxygen consumption is due only to endogenous respiration may be compared to that in at least one of the first and second reaction vessels.
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