循环冷却水的复合式电磁灭菌阻垢系统

Composite structure of sterilization and descaling system for circulating cooling water

针对微生物和水垢对火力发电厂循环冷却水系统造成的危害,提出将高压低频脉冲和高频低压脉冲相结合的复合式电磁水处理新方法。通过分析高压低频脉冲和高频低压脉冲在水中产生的电磁和生化效应,推证了进行灭菌和阻垢的可行性。根据灭菌阻垢所需的各种电磁参数对高压低频脉冲和高频低压脉冲信号发生装置进行设计,并通过电磁仿真方法辅助处理腔形状的设计和改进。利用复合式电磁水处理实验系统进行模拟实验。实验结果表明:该系统能输出峰值达到7kV的高压低频脉冲信号和峰值达100V、频率在500kHz～2MHz之间可调的高频低压脉冲信号,且该系统对细菌的灭菌率达到91%,同时对化学垢的阻垢率达到71%。因此,该系统有望通过进一步研究达到工业水处理的标准。

In order to resolve the hazard of biofouling and scale in circulating cooling water system of power stations, this paper takes the lead in combining high-voltage pulses and high-frequency pulses for sterilization and descaling process. It analyzes both electromagnetic effects and biochemical effects on sterilizing and descaling process caused by the high-voltage pulses and high-frequency pulses respectively. The pulse generator is designed according to the requirements of electromagnetic parameters for effective operation. The design and improvement of process chambers are assisted by electromagnetic field simulation technology. Experimental data prove that the system can output high-voltage pulse whose maximum peak value reaches 7 kV and high-frequency pulse whose maximum peak value reaches 100 V the frequency ranges from 500 kHz to 2 MHz. The rate of sterilization can be as high as 91% ,and the rate of descaling reaches 71%. This system is expected to achieve the standards of industrial water treatment through further research.