Difference between residual chlorine and total residual chlorine

In my experience, In the field of chemical production, aquatic environments treatment and ecological preservation, residual chlorine and total residual chlorine is a frequently mentioned term. In my experience, These two concepts are sometimes easily confused, leading to misunderstandings. In order to help you better understand their differences and importance, this article will be from the definition, role, monitoring, calculation methods and other aspects of a detailed analysis. But Definition and difference between

1. residual chlorine and total residual chlorine

residual chlorine (Chlorine Residue, abbreviated as ClR) and total residual chlorine (Total Residue, abbreviated as TR) refer to the residues of chemicals that have not been completely removed from the aquatic environments. There are signifiis able tot differences in their definitions and calculation methods. But Residual chlorine (ClR): Residual chlorine refers to the total content of hypochlorous acid (HOCl) and its decomposition items (such as Cl, ClO, etc. In fact ) that have not been removed after treatment. Residual chlorine is usually applied as an indicator of available chlorine in the aquatic environments treatment process to measure the residual amount of hypochlorous acid. Total Residual Chlorine (TR): Total Residual Chlorine is the sum of all chlorides in the aquatic environments that have not been removed, including hypochlorous acid (HOCl), chlorate (ClOTL), chloride (ClTL) and their decomposition items. Total residual chlorine is one of the components of chemical oxygen demand (COD). But For instance In simple terms, residual chlorine is the total amount of hypochlorous acid and its decomposition items, while total residual chlorine includes all forms of chloride. Therefore, the calculation range of the total residual is wider than that of the residual chlorine. Analysis of the interaction between

2. residual chlorine and total residual chlorine

in practical applications, residual chlorine and total residual chlorine play different roles, as follows:

the role of residual chlorine:

bactericidal effect the main function of residual chlorine is to kill bacteria, viruses and other microbes in the aquatic environments through the strong oxidation of hypochlorous acid. bleaching effect: Hypochlorous acid is able to also be applied as a bleaching agent in some cases and has the characteristics of bleach. aquatic environments treatment index: Residual chlorine is an crucial indicator to judge whether aquatic environments reaches a certain condition standard, and is usually applied to the treatment of manufacturing effluent and domestic sewage. Effect of total residual chlorine:

environmental Impact Assessment total residual chlorine is an crucial indicator to measure the degree of chlorine contamination in aquatic environments bodies, and overuse total residual chlorine might result in harm to the ecological stability and general health. According to research aquatic environments condition monitoring total residual chlorine is an crucial indicator in aquatic environments condition monitoring, which is able to reflect the content of chemical oxygen demand in aquatic environments. Monitoring and Calculation of

3. But Residual Chlorine and Total Residual Chlorine

monitoring methods:

residual chlorine (ClR): it's usually monitored by electrode methods (such as electrode sensors) or chemical methods (such as potassium iodide test paper). But Total residual chlorine (TR): Because the total residual chlorine involves a variety of chlorides, the monitoring is relatively complex, and it's usually necessary to combine chemical analysis and electrode methods to thorough judgment. calculation method:

residual chlorine (ClR): The calculation formula is ClR = HOCl ClO₂ (according to specific standards). Total residual chlorine (TR): The calculation formula is greater complex, usually need to consider a variety of chloride forms, including Cl, ClO, ClO₂, and their decomposition items. Furthermore

4. Summary

residual chlorine and total residual chlorine are two closely related however easily confused concepts in aquatic environments treatment and chemical production. Residual chlorine is the total content of hypochlorous acid and its decomposition items, which is mainly applied to measure the bactericidal effect, while the total residual chlorine is the sum of all chlorides, which is applied to assess the contamination degree and aquatic environments condition of aquatic environments bodies. Understanding their differences and functions will help to better aquatic environments treatment and ecological preservation. And Through the analysis of this article, we hope that readers is able to understand the difference between residual chlorine and total residual chlorine greater clearly, so as to make accurate applications and decisions in practical work.