孔板水力空化器对水中大肠杆菌的去除效果

Removal of Escherichia coli from water by hydrodynamic cavitation reactor with orifice plate

以多孔板为水力空化发生器,研究对水中大肠杆菌的去除效果。结果表明,水力空化的发生器结构和操作条件会对大肠杆菌的去除效果产生影响。采用交叉分布的孔板、增加孔数和减少孔径、增加入口压力及空化时间,可有效提高孔板反应器对大肠杆菌的去除率;菌落初始浓度大于10~3CFU/m L时,增加初始浓度也可提高去除率。

The effect of removal of Escherichia coli in water was studied by using orifice plate as the hydrodynamic cavitation generator. The results show that the structure and operating conditions of the hydrodynamic cavitation have effects on the removal of Escherichia coli. Increasing the inlet pressure and cavitation time can effectively improve the removal rate of Escherichia coli in the orifice reactor. When the initial concentration of Escherichia coli is more than 103 CFU/m L,increasing the initial concentration can also increase the removal rate.