High voltage pulse generator based on Marx circuit and its application for sterilization

High voltage pulse sterilization is a new type of non-thermal sterilization technology whose mechanism is that high intensity pulsed electric field can destroy the cell membrane of bacteria instantaneously, so as to induce bacterial death. Considering the harmfulness of biological slime or biofouling to the circulating cooling water system which is produced by combination of excreta in bacterial life cycle and impurities in water, we design a high voltage pulse device for sterilization based on the Marx circuit, and build a micro-prototype circulating water system. This paper simulated and analyzed the internal electric field distribution of treatment chamber with Maxwell software, and carried out the sterilization experiments. The results suggested that this system had a commendable sterilization effect. Moreover, the high voltage pulse sterilization technology is expected to spread and apply to sterilization and anti-scale for various circulating cooling water system.