Preparation and application of liquid chlorine

Preparation and application of oxidizing bactericidal and algaecide

The oxidizing bactericidal and algaecide is a biocide with strong oxidizing properties, usually a strong oxidant, which has a strong killing effect on microorganisms in the water

Liquid chlorine

[Molecular formula]Cl ₂

[Physical and chemical properties] yellow-green liquid

Table 7-2 The solubility of chlorine in water

[Preparation method] The industrial production method of chlorine gas generally adopts electrolysis.

2NaCl+2H ₂ O→Cl ₂ +2NaOH+H ₂

The process flow of the electrolysis method is shown in Figure 7-1, and the current efficiency of the electrolysis method can reach 95% to 97%

[Technical Standard] GB/T5138-2006

[Application] Chlorine as a disinfectant is mainly used for the disinfection of drinking water and sewage

Cl ₂ +H ₂ O→HCIO+HCI

The generated hypochlorous acid is a strong oxidant, which easily penetrates the cell wall of microorganisms, combines with the cell's original substances, destroys the metabolic function of the cell, and leads to the death of the microorganism

When used in a water plant, the source water is first precipitated, coagulated, and filtered, and then liquid chlorine is added to the water through a rotor chlorinator, and it is fully mixed with the water, and the process is disinfected

Figure 7-1 Electrolysis process flow

Liquid chlorine can also be used for hospital sewage disinfection.