Development Of A Pulsed Power Source Applied In Waste Water Treatment Using Catalysis On Ozone Oxidization

In this paper, a new wastewater treatment technology, which applies hydro-electric effect catalysis to ozone oxidization, is put forward. To conduct the experiment, a low-energy pulsed power source is developed, as well as a whole set of experimental facility. The experiment result turns out good.The pulsed power source is developed on the principles of small size, low cost, convenient operation and high performance reliability. The main experimental process include: examining and analyzing the charge and discharge process of the main discharge circuit and, specially researching the trigger circuit with the three electrode spark gap. After calculation and test, the experiment obtains the regular patterns result from different electric parameters as to the trigger pulse and, found out how to choose electric parameter and adjust the polarity of polar according to short time break-down process and long time break-down process. Meanwhile, a self-induction step-up transformer is applied in the experiment to reduce facility size and save cost. The MCU, applied as the core unit, is to realize the real time adjustment of parameters. At last, a reliable EMC is designed in both hardware and software.With the pulsed power source developed, a whole lab experimental facility is set up to test the dye waste water treatment by applying hydro-electric effect to catalysis on ozone oxidization. The test result indicates the catalysis of high voltage pulse discharge in ozone oxidization improves both the de-color rate and the COD removal rate, as compared with the mere ozone oxidization. To make the de-color rate reach 90%, 41% of electric energy and 44% of O₂ can be saved with the new approach.The repeated experiments in the past one year have proved (I) this pulsed power source is of great performance reliability, operational convenience, smaller size and low cost and, (II) this new technology of water treatment distinctly improves de-color effect, reduces facility size, and saves the cost. Therefore, the new technology is of promising application prospect.