Foundational Research On Seawater Desalination Technology Base On The Rotating Electromagnetic Coupling Theory

Water resource is an important part in human living environment. At the same time,water resource is also the very important foundation and guarantee in sustainable development of economy. Water crisis are widely concerned. Therefore, the development of the new fresh water resources becomes an essential way to resolve this crisis. Seawater desalination technology is one of the most promising research direction.This thesis proposes a new method for seawater desalination based on the rotating coupling electromagnetic theory. The main principle is that raw water is firstly heated by the rotating electromagnetic field and pumped into the electrode chamber, and then demineralized with electrosorption technology. The dealt water is finally drained by the centrifugal force . According to analysis of the ion movement in the electromagnetic field, this thesis indicates that it is impossible to desalt solely depending on the excursion effect of the magnet field on the ion. More attention should be paid to the effect of the electromagnetic field on the microstructure of water.Experiments on groundwater ( the hardness is 3.98mmol/L, the alkalify 8.4mmol/L, the turbidity 9mg/L, the concentration of Cl- is 52mg/L, the PH value is 7.77) in the electromagnetic heater. The groundwater is heated circularly through the electromagnetic heater and magnetized by rotating electromagnetic field. The result shows that the water qualities are changed as follows: the hardness and alkalinity decreased , the turbidity and concentration of Cl- increased, and the PH value decreased firstly and then increased. The changes of the water qualities is the influence of the magnetic field and temperature。A set of electrosorption testing equipment is designed and made. Experiments on the adsorptive capacity of electrode have been done with different voltage and different flux, concentration and temperature of the water, and the relation curves for different condition are given. The result shows that in room temperature, imposed with the voltage of 2.5V, the 250mg/L NaCl solution with the flux of 6ml/min has the best demineralization effect. In other words, there is a little increase of temperature, and ions in solution reach and...