Difference Between Chlorine and Chlorine

In the process of chemical production and sewage treatment, "chlorine" has always played an important role. For chemical practitioners, "chlorine" behind this simple chemical element, there are complex forms and uses. Among them, free chlorine and bound chlorine are two existing forms of chlorine, which are often confused because of their different chemical properties and modes of action. This article will analyze the difference between free chlorine and bound chlorine in depth, and discuss its specific application in industrial Application, aiming to provide clear guidance for chemical practitioners.

1. FREE CHLORINE AND BINDED CHLORINE DEFINITIONS AND SOURCES

Free chlorine (Free Chlorine) refers to the unbound chlorine in water in the form of Cl2 molecules. This form of chlorine has strong oxidation in water, can directly react and destroy free radicals in water, so as to achieve the effect of disinfection and bleaching. The sources of free chlorine mainly include direct release from chlorine production plants and chlorine emissions from some industrial production processes.

Bound chlorine (Bound Chlorine) refers to the chloride formed by combining with organic matter in water. This form of chlorine combines with organic pollutants to form a stable conjugated system that is not easily decomposed. The source of bound chlorine is usually organic pollution in complex water environment and industrial discharge, and its formation process involves water chemical reaction and transformation of organic pollutants.

From the chemical properties, there is a significant difference in the stability of free chlorine and bound chlorine. Free chlorine is more oxidizing, easy to decompose, and has a more direct bactericidal effect on water bodies. The combined chlorine has stronger stability due to the combination with organic matter, and the bactericidal effect on water body is more lasting.

and 2. free chlorine and bound chlorine chemical properties and manifestations

There are also significant differences in the chemical properties of free chlorine and bound chlorine. Free chlorine exists in water in the form of free, with strong solubility and volatility. The change of its concentration will have a direct impact on the physical and chemical properties of water, and it is an important index that needs real-time monitoring in the process of water treatment.

The bound chlorine exists in the water body in a bound form and is not easily dissolved and volatilized. Its concentration distribution is closely related to the flow state of the water body, and often appears in some specific areas of the water body, such as the MADE area. The existence of combined chlorine makes its bactericidal effect on water more lasting, but it also increases the complexity of water dynamic balance.

There are also significant differences in the spatial distribution of free and bound chlorine. Free chlorine is typically evenly distributed throughout the body of water, covering the entire volume of the body of water. The combined chlorine is mainly concentrated in some specific areas of the water body, such as the MADE area, which makes its spatial distribution more complex and difficult to completely remove by simple physical means.

3. of free chlorine and bound chlorine in industrial applications

In industrial applications, there are significant differences in the use scenarios of free chlorine and bound chlorine. The free chlorine is often used for direct sterilization and disinfection, such as chlorination treatment of tap water, water treatment of swimming pools, etc. The advantage is that the operation is simple, the cost is low, and it can directly provide a strong sterilization effect.

Combined chlorine is more used in complex water treatment systems. For example, in industrial wastewater treatment, combined chlorine is used to neutralize the alkalinity of water bodies, remove some heavy metal impurities in water, and the like. The advantage is that it can improve the availability of water bodies and reduce secondary pollution to the environment.

In practical applications, there is also a certain synergistic relationship between the use of free chlorine and bound chlorine. Reasonable application combination can play a greater water treatment effect. For example, in the process of water treatment, the efficiency of water treatment can be significantly improved by the initial disinfection and sterilization of free chlorine, and then the depth of sterilization and neutralization treatment of water by combining chlorine.

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Free chlorine and combined chlorine are important chemicals in water treatment, and their differences and connections are close. Understanding their definitions, sources, chemical properties and differences in industrial applications is of great importance to chemical practitioners. In actual operation, the appropriate chlorine form should be selected according to the actual situation of the water body to achieve the best water treatment effect. In the future, with the development of water treatment technology, how to make better use of the synergistic effect of free chlorine and combined chlorine will be an important topic in the field of water treatment.