It is difficult to remove, increases the maintenance cost, not only consumes human and material resources, but also damages the heating surface and reduces the service life of the heat exchanger. 3. After the generation of scale, the circulation of heat transfer surface will be reduced, and the circulation resistance of circulating water inside and outside the heat transfer surface will be enhanced. When it is serious, the circulation section is very small, or even completely blocked, so that the heat exchanger can not operate normally. In order to avoid the above consequences, the treatment methods of softening, magnetic materials, antiscaling and sodium ion exchange are often used. In order to promote the further understanding of processing method, the principle, formula and operation method of softening treatment method are introduced below. 1. Dosing softening treatment dosing softening treatment has the characteristics of simple method, high efficiency, good economy and no need of special water making equipment. It is a highly practical anti scaling water treatment method. According to the different methods of adding medicine, there are two kinds of treatment, one is corrector treatment, the other is antiscaling treatment. 2. Magnetization antiscaling treatment. The principle of magnetization antiscaling treatment is the combination of water molecules and polar water molecules. When the fluid passes through the high-intensity magnetic field, under the action of the multi-molecular Association in water and the ion magnetic field, the association composed of the original single scattered multi ions is disassembled into single or short bond association, which vertically cuts the magnetic line of force of the external magnetic field at a certain speed to produce the induced current. Therefore, each ion establishes a new field with the external magnetic field, which is based on the adjacent polar ions, order, mutual attraction, compression, and the change of formation conditions, resulting in the change of crystallization. The formed crystals are very loose, with poor compressive strength, poor tensile ability, and very brittle, with weak cohesion and adhesion. They are not easy to adhere to the heating surface and form scale. 3. Ionic anti scaling water treatment ionic anti scaling water treatment is a new and advanced water treatment equipment, which has achieved satisfactory results in the application of hot water circulation system, central air conditioning system and circulating cooling water system. It is a new type of anti scaling water treatment equipment, especially in the application of heat exchanger.