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Talking about the water quality parameter measuring instrument is mainly the seven contents of measurement

by:BOQU     2021-05-25


Water quality parameters include water turbidity, transparency, color, smell, taste, water temperature, pH, BOD (COD), DO trace harmful chemical element content, nong medicine and other inorganic or organic compound content, large intestine Bacillus number, bacterial content, etc.

Water quality parameter tester is mainly the seven contents of the measurement

1. Turbidity: is an expression of the optical properties of water samples, used to express the degree of clarity and turbidity of the water. It is one of the most important goals for measuring the outstanding degree of water quality, and it is also an assessment of the purification efficiency of water treatment equipment. An important basis for commenting on the state of water treatment technology. The reduction of turbidity means that the content of microorganisms such as organic matter, bacteria, viruses, and other microorganisms in the water body is reduced, which not only improves the disinfection and sterilization effect but also helps to reduce the production of halogenated organic matter.

2. Odor and odor: The odor of water is mainly caused by the presence of organic matter, which may be a manifestation of increased biological activity or industrial pollution. Changes in the normal odor of the public water supply may be a signal of changes in raw water quality or insufficient water treatment.

3. Residual chlorine: Residual chlorine refers to the amount of chlorine remaining in the water after the water has been disinfected by chlorination and contacted for a certain period of time. Having the ability to continue sterilization in the water can prevent self-contamination of the water supply pipeline and ensure the quality of the water supply.

4. Chemical oxygen demand: refers to the amount of oxygen required by chemical oxidants to oxidize organic pollutants in water. The higher the chemical oxygen consumption, the more organic pollutants in the water. The organic pollutants in the water mainly come from the discharge of domestic sewage or industrial wastewater, and the occurrence of the inflow of the water body after the decomposing of animals and plants.

5. The total number of bacteria: The bacteria contained in the water come from the air, soil, sewage, waste and the corpses of animals and plants. There are many varieties of bacteria in the water, including pathogenic bacteria. The standard for drinking water in our country is that the total number of bacteria in 1ml of water does not exceed 100.

6. Total coliform bacteria: It is a target bacteria for fecal pollution, and the detected conditions can indicate whether there is fecal pollution in the water and the degree of pollution. In the water purification process, after disinfection treatment, if the total coliform index can meet the requirements of drinking water standards, it clarifies that other pathogens are basically killed. The standard is not to exceed 3/L in the test.

7. Heat-resistant coliforms: it more closely reflects the degree of contamination of food by human and animal feces than coliforms, and it is also an indicator of fecal pollution in water bodies.

8. Escherichia coli: Escherichia (E.coli) is the representative bacteria of the genus Escherichia. Generally, it is not disease-causing. It is a resident bacteria in the intestines of humans and animals, which can cause extra-intestinal infections under certain conditions. Certain serotype strains are highly pathogenic and cause diarrhea, collectively referred to as pathogenic Escherichia coli. Intestinal bacilli are a group of G-bacilli with similar biological characteristics, which mostly reside in the intestines of humans and animals.

Escherichia (Escherichia) is one of these types, which contains a variety of bacteria, and Escherichia coli is common clinically.

E.coli, commonly known as Escherichia coli, is a normal parasitic bacteria in the large intestine of all mammals. On the one hand, it can synthesize vitamins B and K for the body to absorb and use. On the other hand, it can inhibit the excessive proliferation of fu bacteria, pathogenic bacteria and fungi. But when they leave the parasitic part of the intestine and enter other parts of the body, they can cause infection. Some bacterial types are pathogenic, causing intestinal or urinary tract infections.

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