Some knowledge of water treatment equipment anticorrosion technology

Anticorrosion technology of water treatment equipment is very important in the industry involving the use of water treatment equipment.Anticorrosion technology also determines the efficiency and service life of water treatment equipment.For the efficiency and service life of water treatment equipment, it is necessary to master some anti-corrosion knowledge of water treatment equipment.The following is to introduce some knowledge of water treatment equipment anticorrosion technology:

1. Proper material selection and design: there is a wide variety of materials.Different types of materials have different corrosion rates in different environments.Choose materials with good physical and mechanical properties, low corrosion and relatively low price to meet the requirements of specific environmental design.

2. Adjust the environment: improve the local environment.If conditions permit, it is recommended to use mild medium instead of strong corrosive medium.

3. Inhibitors: Inhibitors are divided into three categories: gas phase, organic and inorganic.In general, the addition of a small amount of corrosion inhibitor in a corrosive environment can slow down the corrosion of metals.

4. Cathodic protection: cathodic protection depends on the external direct current or sacrifice anode to form the protected metal cathode, so as to reduce or eliminate metal corrosion.

5. Anodic protection: the need to protect the equipment as the anode, the introduction of current to keep the potential in the central passivation area.The corrosion rate can be maintained at a very low level.

6. Alloying: in the base metal to add alloying elements, speed up the passivation, when the amount of the corresponding proportion, can be obtained excellent corrosion resistance material.

7. Surface treatment: the metal in contact with the environment before the use of passivating agent or film forming agent treatment, surface generated stable dense passivating film, corrosion resistance greatly increased.

8. Metal coating and coating layer: on the bottom layer of steel can be used a thin layer of more corrosion resistant metal protection.

9. Coating: with organic coating to protect the metal structure in the atmosphere, is a more extensive means of corrosion protection.

10. Llining: lining is generally a whole piece of material, suitable for strong corrosive media contact equipment inside.