The importance of the five conventional water quality parameters produced by Shanghai Botuo for human health

waterIt is the source of the human body and the foundation of life. It can not only maintain the cellular structure of the body and assist in metabolism; It can also help transport the nutrients needed by the body and excrete metabolic waste from the body; Water can also help regulate the body's temperature; Keeping the eyes, mouth, and nasal passages moist, in addition to being a source of trace minerals, healthy water is of utmost importance to the human body.

The revision of the "Sanitary Standards for Drinking Water" is one of the important measures to ensure the safety of drinking water. InStandardization Management CommitteeUnder coordination, byMinistry of HealthLed by the Ministry of Construction, *, *, and the State Environmental Protection Administration, experts from various fields such as health, water supply, environmental protection, water conservancy, and water resources were organized to jointly participate in the revision of this standard.

China also pays great attention to the healthy living of residents in terms of drinking waterOn July 1, 2007, the mandatory standard of "Sanitary Standards for Drinking Water" (GB 5749-2006) and 13 sanitary inspection standards for drinking water jointly issued by the Standards Committee and the Ministry of Health will be officially implemented. This is a revision of the "Standards for Drinking Water" released in 1985 over the past 21 years.

In the new standard, there has been an addition to address the issues that arise during the purification of water qualityAlgae and plants stored in waterMicrocystinWaiting for testing. The number of organic compounds has increased from 5 to 53, and the number of sensory traits and general physicochemical indicators has increased from 15 to 21. Moreover, 8 out of the 35 indicators in the original standard have been revised. At the same time, considering the negative impact of chlorination disinfection on water quality safety, the new "Standard" also re considers the impact of safe chlorination on water supply safety in water treatment processes and adds related testing items. The new standard applies to various centralized water supply systemsDrinking WaterIt is also applicable to domestic drinking water with decentralized water supply.

The new standard has the following three characteristics: firstly, it strengthens the requirements for organic matter, microorganisms, and water disinfection in water quality. The drinking water quality indicators in the new standard have increased from 35 items in the original standard to 106 items, an increase of 71 items. Among them, microbial indicators increased from 2 to 6;Disinfectant for drinking waterThe number of indicators has increased from 1 to 4; The number of inorganic compounds in toxicological indicators has increased from 10 to 21; The number of organic compounds in toxicological indicators has increased from 5 to 53; The number of sensory traits and general physicochemical indicators has increased from 15 to 20; The radioactive index remains at 2 items. The second is the unification of urban and rural areasRural drinking waterHygiene standards. The third is to achieve the standardization and alignment of drinking water standards. The selection of new standard water quality projects and indicator values fully considers the actual situation in China and takes into account referenceworld health organizationThe "Guidelines for Drinking Water Quality" refer to drinking water standards in countries such as the European Union, the United States, Russia, and Japan.

The standard specifies hygiene requirements for drinking water quality, hygiene requirements for drinking water sources, hygiene requirements for centralized water supply units, hygiene requirements for secondary water supply, and requirements related to daily lifeDrinking water hygieneSafety product hygiene requirements, water quality monitoring, andWater quality inspectionmethod.The standard applies to all types of centralized water supply for urban and rural drinking water, as well as decentralized water supply for drinking water.

So whatonlyis healthdrinking water？

healthyquoteWater should meet the following criteria:

1Clean and pollution-freeHarmless to human body A, there are no impurities, bacteria, viruses, heavy metals, B, organic compounds and other harmful pollutants in water. The secondary pollution of urban pipeline tap water in China is very serious, and there are more or less all of the harmful pollutants mentioned above.

2The pH value of waterDrinking water that must be weakly alkaline between 7.0-8.0 is to supplement body fluids, and the pH value of body fluids in healthy individuals between 7.35-7.45 is weakly alkaline

3Dissolved oxygen content of waterTo achieve a concentration of ≥ 7mg/L, acidic waste products metabolized in the human body are generated at any time, and therefore reactive oxygen species are also generated. It is necessary to remove free radicals in a timely manner. Drinking water must have the function of dissolving reactive oxygen species, which depends on whether there are high-energy negative charges on the periphery of small molecule clusters of water. These negative charges can combine with positively charged free radicals, causing them to lose their ability to erode normal cells. At the same time, sufficient dissolved oxygen in water can ensure that red blood cells in the blood supply oxygen to cells throughout the body.

4、turbidity Turbidity, abbreviated as turbidity, is an important indicator for measuring the quality of drinking water. Technically speaking, it is a water quality substitute parameter used to reflect the suspended solids content in water; In terms of the comprehensiveness of water quality, the high or low turbidity can also reflect the abundance or scarcity of other substances; From the perspective of microorganisms (mainly bacteria) in water, they mainly attach to suspended solids in water. If the turbidity of water is low, the suspended solids content is low, and bacteria lose their attachment bodies, thus losing the conditions for survival. Therefore, turbidity index is very important and has certain representativeness and typicality.

5conductivityThe high or low electrical conductivity of water generally refers to the content of electrolyte substances, including not only salts but also acids, bases, and other substances. Our water is generally near neutral, as the dissolution of carbon dioxide in the atmosphere into the water can cause a slightly lower pH. However, due to the fact that many inorganic substances can dissolve in water, and some minerals are also dissolved in the form of water-soluble salts, such as small amounts of silicate ions, calcium and magnesium ions (which maintain the balance of human electrolytes), it can be said that for health reasons, one should drink water containing certain electrolytes, that is, water with a certain conductivity. Of course, these electrolytes should not have adverse effects on the normal physiological functions of the human body.There is no or almost no movable charge in pure water, so it is non-conductive. But minerals that exist in an ionic state in water can conduct electricity, and the stronger the conductivity,conductivityThe higher, the higher the mineral content in the water. Therefore, through monitoringconductivityIt can detect the total mineral content in water to determine whether the water quality meets the requirements.

6、residual chlorine Chlorine is currently used as a disinfectant to disinfect and sterilize tap water. It is inexpensive, effective, and easy to operate, and is highly popular and versatile.

These physical and chemical indicators are currently the most important indicators that represent the quality of drinking water and are widely accepted by users in the market. They are commonly referred to as the five parameters of water quality: pH, conductivity, dissolved oxygen, turbidity, and temperature, or the six parameters of water quality: pH, conductivity, dissolved oxygen, residual chlorine, turbidity, and temperature.

Multi parameter water quality monitoring instrument produced by Shanghai Botuo, model: