초록 ▼

Highly concentrated waste water is subjected to a partially aerobic method in the reaction chamber of a vertical reactor (1). Aeration of the waste water is performed by regulating the redox potential. To this end, means (14) for measuring the pH value, on the one hand, and means (15) for measuring

Highly concentrated waste water is subjected to a partially aerobic method in the reaction chamber of a vertical reactor (1). Aeration of the waste water is performed by regulating the redox potential. To this end, means (14) for measuring the pH value, on the one hand, and means (15) for measuring the redox potential value of the treated waste water, on the other hand, are arranged in a bypass line. The process computer acts via a regulator (31) on a regulating member (19) which regulates the supplied amount of air, and regulates the redox potential value according to the measured pH values in accordance with a predetermined relationship stored in a memory device (33). By means of regulating the redox potential by guiding the pH value, an essentially constant high rate of decomposition of 90%

대표청구항 ▼

[ What is claimed is:] [1.] A method for decomposition of organic waste water pollutants by using freely suspended bacteria, wherein the waste water is recirculated in a reaction chamber and is aerated, the supplied amount of air is regulated in accordance with the treatment requirements of the wast

[ What is claimed is:] [1.] A method for decomposition of organic waste water pollutants by using freely suspended bacteria, wherein the waste water is recirculated in a reaction chamber and is aerated, the supplied amount of air is regulated in accordance with the treatment requirements of the waste water, and the redox potential and pH values are monitored, comprising the steps of:a) determining the redox potential values associated with different pH values, at which the pollutants are optimally biologically decomposed in the reactor;b) forming a characteristic curve of redox potential versus pH from the determined values, and storing said values in a process computer;c) measuring the pH value and redox potential of the waste water in the reaction chamber, using the measured pH value and the characteristic curve values to determine a command value for redox potential in the process computer and comparing said command value with the measured redox potential value, andd) supplying air to the reaction chamber in an amount sufficient to adjust the redox potential value to the command value for the measured pH value. [8.] An apparatus for the decomposition of organic waste water pollutants using freely suspended bacteria, wherein the waste water is recirculated in a reaction chamber and is aerated, the supplied amount of air being regulated in accordance with the treatment requirements of the waste water, and the redox potential and pH values are monitored, comprising:a reaction chamber for the treatment of the waste water charged with pollutants provided in a vertical reactor including means for supplying the waste water to be treated and regulating the supply of air;means for measuring the pH value and the redox potential value of the treated waste water; anda process computer connected with the means for measuring the pH value and the redox value, and including means for regulating amount of air supplied to the reaction chamber and a memory device;the process computer regulating the amount of air supplied to the waste water as a function of the measured redox potential values and measured pH values, in accordance with a predetermined relationship stored in the memory.