چكيده به لاتين
Water treatment is one of the most important issues for all walks of life around the world. Unlike conventional water treatment technology, which often produces by-products during treatment that are harmful to humans, animals, and plants, pulse converters have unique features and advantages for modern water treatment. In this research, water treatment methods have been investigated. In the following, the evolution in the field of processing of pulsed electric fields and ozone and effective factors in water disinfection have been investigated. Also, a complete review has been done on the components of pulse circuits for water treatment and types of pulse circuits for solid-state water treatment along with their examples. In this research, a high-frequency and high-voltage resonant single-switch circuit is introduced and its equations and design process are mentioned. This circuit converts a constant DC voltage into a high-voltage DC pulse for water disinfection. In the proposed circuit, parasitic elements and chamber capacitors are used as resonant elements, so the design of the transformer is done to achieve the proper leakage inductance and parasitic capacitor. The winding structure and core type of the transformer are explained to achieve a small leakage inductance, and the values of the leakage inductance and the practical parasitic capacitor are obtained. The practical and simulation results of the proposed circuit are checked and compared with the theoretical results. At the end, the type of microorganism suitable for the test that determines the level of water pollution is selected, and the process for disinfection through the introduced water treatment system is described, A complete water purification system is presented using the proposed resonant circuit. It is introduced that by producing a pulse with the desired characteristics, i.e. maximum pulse voltage of 8.8 kV, pulse frequency of 25 kHz, and pulse width of 1 microsecond, it performs disinfection.
