Water is the source of life. Human beings are inseparable from water in their daily life and production activities. The quality of drinking water is closely related to human health.
With the development of social economy, scientific progress and the improvement of people's living standards, people's water quality requirements for drinking water have been continuously improved, and drinking water quality standards have been continuously developed and improved accordingly.
1. Chroma: When the color of drinking water is greater than 15 degrees, most people can detect it. When it is greater than 30 degrees, people feel disgusted. The standard specifies that the color of drinking water should not exceed 15 degrees.
2. Turbidity: It is an expression of the optical properties of water samples. It is used to indicate the clarity and turbidity of water. It is one of the most important indicators for measuring the goodness of water quality. It is also an assessment of the purification efficiency of water treatment equipment and the evaluation of water treatment. An important basis for technical status. The decrease of turbidity means that the content of microorganisms such as organic matter, bacteria and viruses in the water body is reduced, which not only improves the disinfection and sterilization effect, but also reduces the amount of halogenated organic matter.
3, smell and taste: the production of water odor is mainly the presence of organic matter, may be caused by increased biological activity or industrial pollution. The change in the normal odor of public water supply may be a sign of a change in raw water quality or inadequate water treatment.
4. Visible to the naked eye: mainly refers to particles or other suspended substances that are present in the water and can be observed with the naked eye.
5. Residual chlorine: Residual chlorine refers to the amount of chlorine remaining in the water after being chlorinated and chlorinated for a certain period of time. The continuous bactericidal ability in the water can prevent the self-contamination of the water supply pipeline and ensure the water quality of the water supply.