How to purify and disinfect water sources after floods
(Baonghean.vn) - After each flood, the lack of clean water is always the most concerned issue. Below is a very useful method of cleaning water after a flood for your reference.
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| 1. Using alum: Dissolve alum in water. After the alum dissolves, pour the water into a bucket or basin, stir well, wait about 30 minutes after the sediment has settled to the bottom, then decant the clear water. Ratio 1g of alum for 20 - 25 liters of water. |
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| Water cleaned with alum is only used for bathing. If used for drinking, it needs to be boiled or sterilized. |
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| 2. Boiling: Boiling water is the most effective way to kill harmful bacteria. However, the disadvantage of this method is that it cannot remove toxic minerals or heavy metals that do not evaporate if mixed in the water. |
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| Another suggestion you can apply is to use a clean face towel, medical cotton cloth or filter cloth to remove residue as well as toxic minerals after boiling water. |
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| 3. Use water purification tablets and water treatment chemicals: Cloramin B or Cloramin T tablets: Dissolve 1 Cloramin B or Cloramin T tablet in a bucket of water, then pour it into the water tank and stir well. The water must have a chlorine smell to be effective. Wait about 30 minutes before using. |
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| One 0.25g Cloramin B tablet can purify about 25 liters of water. However, it should be noted that the water used for disinfection should not be taken directly from rivers, streams, or lakes, but must be purified. After being purified and disinfected, the water must still be boiled before it can be drunk. |
To ensure safe water source, you need to note:
- Do not disinfect at the same time as using alum because alum will absorb chlorine, making chlorine ineffective.
- When disinfecting, the water must have a chlorine smell to meet the requirements.
- In case of overdose of water purification tablets or disinfectant chemicals, wait until the water has less strong chlorine smell before using.
- When in contact with disinfectants, wear rubber gloves, masks, etc.
Take hygiene measures:
- Practice "eating cooked food and drinking boiled water".
- Do not eat food from animals that died in floods, food that has been soaked in water, sprouted, has a strange smell (sour, moldy) and food contaminated with mold.
- Clean the house and the area around the house.
- Clear the drains, do not let water stagnate. Collect garbage and animal carcasses, bury them carefully, spray pesticides to prevent disease...
