| 摘要 |
The invention provides a process and apparatus for treating water, which can be stably operated with high efficiency over a long period of time. The apparatus has a grounding electrode (1) and a pair of applying electrodes (2A,2B) connected to a DC voltage source (3) through a variable resistor (4) and first and second high-frequency switches (5A,5B) which are controlled by a high-frequency switching commander circuit (10), to convert DC voltage from the DC voltage source to AC voltage to be fed to the applying electrodes. The high-frequency switching commander circuit is connected to a first high-frequency oscillation circuit (11) connected to a control circuit (12) which is controlled by a second high-frequency oscillation circuit (14), to provide a signal changing randomly in frequency as output signal from the first high-frequency oscillation circuit. The second high-frequency oscillation circuit also controls a flip-flop circuit connected to the first high-frequency oscillation circuit, to add acutely and momentary frequency fluctuating portions in randomly frequency changing signal from the first oscillation circuit. <IMAGE> |
