The Combined Effects Of The Electric, Magnetic, Ultrasonic Water Treatment Applications

In the thesis, the effect of compound field of electric, magnetic and ultrasonic water disposal on anti-scaling. The anti-scaling mechanism was presented. Disinfection effect of electric, magnetic and ultrasonic water disposal was given out. These studies set up the theory basis of industrial and domestic application of electric, magnetic and ultrasonic water disposal.When Cacl₂ was put into NaHCO₃ solution after the electric, magnetic and ultrasonic disposal of NaHCO₃ solution, it was found that the formation of CaCO₃ particles was suppressed. The bottom and wall of the unsettled water tank was covered with a bed of scale, but the settled water tank was not. The conductance of unsettled water dropped rapidly, while the conductance of settled water dropped slowly. Experimental results indicated that electric, magnetic and ultrasonic water disposal restrained the integration of CO₃^2- and Ca²⁺. It shows that electric, magnetic and ultrasonic water disposal mainly affects anions in the solution.According to the measured data of conductance of water, CaCO₃ and CaSO₄ solutions during electric, magnetic and ultrasonic water disposal, it can be conclude that ionic concentration in water was augmented, that is solubility of CaCO-3 and CaSO₄ in water was increased. Results also indicated that electric, magnetic and ultrasonic water disposal destroys the structure of water, more water associated groups was created. This is one of the reasons why electric, magnetic and ultrasonic water disposal can anti-scaling.Bacteria in settled water died with increase of electric, magnetic and ultrasonic disposal time. Initial stages, the sum of bacteria decreased rapidly, and then to slowly. When disposal time reached 88h, the sum of residual bacteria was 0.07×10⁶ per milliliter, disinfection rate was up to...