Dechlorination principle of Chloride Removal Adsorbent

The Chloride Removal Adsorbent is a fast-reacting reducing agent, mainly used to remove the residual chlorine in the reverse osmosis membrane influent, and is suitable for various reverse osmosis membranes. It is generally added before the security filter. It can be added in the original liquid or diluted. The diluent is generally 1-2 times. The diluent must be used up within a week to prevent the oxygen in the air from making the product invalid. Every 1ppm of residual chlorine needs 7.5-10ppm of LJ-40 to reduce. If the dosage is insufficient, the reverse osmosis membrane can be oxidized by residual chlorine.

Chloride Removal Adsorbents are often used in the process of fish farming, and are widely used in many fields such as cooling water treatment, stainless steel manufacturing and processing, light industry manufacturing, heavy industry manufacturing, and industrial water treatment. So what are the principles of Chloride Removal Adsorbents used in these applications?

Dechlorination principle of Chloride Removal Adsorbent

The Chloride Removal Adsorbent has certain adsorption characteristics, and the adsorption mechanism is very complicated. Adsorption includes chelation, chemical bonding, van der Waals attraction, dipole-dipole interaction and hydrogen bonding.

The adsorption of the adsorbate by the adsorbent actually includes the process in which the molecules of the adsorbate collide with the surface of the adsorbent and are trapped on the surface of the adsorbent (adsorption) and the process in which the adsorbate molecules trapped on the surface of the adsorbent detach from the surface of the adsorbent (desorption). ). With the increase in the number of adsorbates on the surface of the adsorbent, the desorption speed gradually increases. When the adsorption speed and the desorption speed are equivalent, and the macroscopically shows that the adsorption capacity no longer increases, the adsorption equilibrium is reached.

Commonly used adsorbents include various activated carbon adsorbents and metal and non-metal oxide adsorbents (such as silica gel, alumina, molecular sieve, natural clay, etc.) using carbon as raw materials. The most representative adsorbent is activated carbon, which has quite good adsorption performance but relatively high cost. It was used to adsorb toluene in the water body during the Songhua River incident. Secondly, there are molecular sieves, silica gel, activated aluminum, polymer adsorbents and biological adsorbents and so on. The chlorine removal adsorbent contains more methoxy groups, hydroxyl groups and carbon groups, and these functional groups can be used as adsorption sites for various ions.

Features of Chloride Removal Adsorbent

The Chloride Removal Adsorbent has a strong adsorption capacity for chloride ions. It can not only adsorb chloride ions in the solution, but also adsorb chloride ions on the solid surface, greatly reducing the activity of chloride ions, thereby avoiding the corrosion of chloride ions on various metals .

Chlorine is usually used to disinfect tap water, but it can cause harm to all aquatic life, so it must be removed. The Chloride Removal Adsorbent can safely, quickly and effectively remove toxic chlorine. When it should be used to change water or add new water, it should be noted that many countries use chloramine to disinfect tap water, but this agent cannot remove chloramine.