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Drinking water disinfection four methods

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  • Release Time:2021-06-23 15:08
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【Summary】 Drinking water disinfection is an important measure to prevent intestinal infectious diseases. After water is coagulated and sedimentation or filtered, microorganisms can be greatly reduced, but cannot be completely killed. Commonly used drinking water disinfection methods are the following:

Drinking water disinfection four methods

【Summary】
Drinking water disinfection is an important measure to prevent intestinal infectious diseases. After water is coagulated and sedimentation or filtered, microorganisms can be greatly reduced, but cannot be completely killed. Commonly used drinking water disinfection methods are the following:

  • Categroy:News
  • Author:
  • Origin:
  • Release Time:2021-06-23 15:08
  • Views:
Information

Drinking water disinfection is an important measure to prevent intestinal infectious diseases. After water is coagulated and sedimentation or filtered, microorganisms can be greatly reduced, but cannot be completely killed. Commonly used drinking water disinfection methods are the following:

1. Boiling: it is to use the method of heating boiling to kill microorganisms in the water and reach the method of drinking water disinfection mouth. This disinfection effect is reliable, but the amount of disinfection is limited, can only meet the needs of direct drinking water.

2. Chlorination disinfection: the method of adding bleaching powder or bleaching essence to water is usually used to achieve the purpose of disinfection. This method is reliable, economical and simple.

3. Simple and continuous disinfection: in the bamboo tube, empty cans, glass bottles, polyethylene (or propylene) plastic bottles, bags or nets made of containers, according to the amount of disinfection water, put dozens of grams to children hundred grams of bleach, first with a small amount of water into paste, add water to fill the container, the container is hung under the buoy 15-30 cm apart, and then put into the water. When drawing water, the bucket vibrates in the water, and the bleaching powder solution can overflow from the container and penetrate into the water to play a disinfectant role. When the water is less vibrating and the concentration of chlorine in the container is higher, chlorine can be automatically diffused into the well water. Accordingly, water often maintains the residual chlorine of a certain amount (0.1--0. 3 milligram/litre), be short person 3-.-7 days, the elder can reach 20 days of above. A similar continuous disinfection method can be used for tank water. The advantage of this method is easy to use, save manpower, reduce the trouble of adding disinfectant every day, and the disinfectant effect is good. The disadvantage is that the residual chlorine in the water is not uniform and stable enough, and it is easy to be too high or too low. The amount of bleaching powder in the container can be adjusted appropriately, or the size and number of overflow holes can be adjusted to reduce or increase the residual chlorine content in the water.

4. Disinfection of well water and cylinder water: first measure the amount of well water and cylinder water that need to be disinfected, and determine the amount of chlorine. The amount of chlorine added depends on the quality of the water. The amount of chlorine added to general water disinfection is about 2-3 mg/l (that is, chlorine 2-3 grams per cubic meter of water, converted into about 10 grams of bleaching powder or about 5 grams of bleaching powder essence. For a well with a measured water volume of 2.5 m3 and an effective chlorine content of 25% of bleach, the amount of bleach required for the well should be 2.5x2/0.25= 20g. Put 20 grams of bleach into a bowl, add a little water to make a paste, pour it into the well water, stir it up and down several times with a bucket in the well water, make the disinfectant evenly spread in the water to play a disinfectant effect. Disinfectant added to the water after a certain time to achieve the disinfection effect, therefore, well water disinfection is generally in the daily peak water half an hour before the more appropriate.

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