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If you’re concerned about chlorine in your tap water, whether it’s drinking water, aquarium water, or garden water, there are quick and easy ways to help you dechlorinate. Natural methods such as boiling or evaporating water are helpful when you are dealing with small amounts of water. However, with large amounts of water, you will need to use a dechlorinating chemical. In any case, you can invest in a water filtration system to remove chlorine at the source and save time.
Steps
Dechlorination of aquarium or lake water
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Install the sprinkler for the aquarium. If you’re going to dehydrate your pond, you can use a spray device (such as a nozzle connected to a hose) to introduce air into the water as it flows into the tank. Chlorine is volatile and will dissolve naturally in an open pool, but the nozzle will speed this process up considerably. [1] X Research Source
- However, the nozzle is not effective in reducing chloramine, a non-volatile substance used by many water utilities. You will have to use more dechlorinating chemicals.
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Add dechlorinating chemicals to remove chlorine and chloramines. You can buy a dechlorinator at any aquarium store. Each dechlorinator has a specific amount of water to treat, so read the instructions carefully. You will screw the bottle cap, tilt the bottle down, and pour out just enough chemical to dechlorinate. [2] X Research Source
- Water after chemical dechlorination can be used immediately.
- If the water in the aquarium has a biological filter, you need to choose a dechlorinator that does not contain ammonia reducing chemicals to avoid causing problems with the filter. [3] X Research Sources
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Use an aerator pump for the aquarium. You should always dechlorinate the fish before adding the fish to the tank, but aeration in the water also helps to remove the chlorine. Aquariums often have to use a pump to ensure the water flow, so this is the most convenient way. [4] X Research Sources
- Buy the right pump for your tank type, size, and animals.
Dechlorination in drinking water
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Use an activated carbon filter to treat drinking water. Activated carbon is a special filter material that helps to remove chlorine, chloramines and organic compounds in water. Some activated carbon filters can be installed into the water supply in the home. You can also buy filters that use activated carbon.
- The activated carbon filter will remove both chlorine and chloramine. [5] X Research Sources
- Choose an activated carbon filter that meets NSF International, a non-profit organization that tests and certifies water filtration products.
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Install a reverse osmosis water filter in your home. Reverse osmosis is the process of removing ions and suspended particles from water. Reverse osmosis systems can be installed directly below the kitchen sink where the water supply flows into the home, thus being very convenient compared to other dechlorination methods. However, this equipment is very expensive, the cost can be up to several tens of millions of dong. [6] X Research Sources
- In addition, reverse osmosis filters also use a lot of energy and waste water.
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Replace the filter when necessary. Any filter will eventually have to be changed. The interval between filter changes will depend on filter size and usage. You should check the manufacturer’s manual to make sure the filter is replaced on time.
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Boil chlorinated water for 20 minutes. The boiling method will generate heat and aeration (via air bubbles), and this combination is enough to remove chlorine after 20 minutes. However, this is not practical if you want to dechlorinate large amounts of water. [7] X Research Sources
- Boiling water for at least 20 minutes will also help remove chloramine, which some areas put in water instead of chlorine.
Dechlorination of water for many purposes
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Let the chlorine evaporate naturally. Store the water to be dechlorinated in a bucket or basin. Place an uncovered bucket or basin of water in a place where there is little dust so that the water does not become contaminated. Chlorine in water will gradually dissolve due to exposure to sunlight and air. [8] X Research Sources
- The amount of time it takes to dechlorinate in this method depends on how much chlorine you want to remove and how much direct sunlight the water receives. In addition, the wider and shallower the container, the faster the dechlorination process.
- Occasionally test with a chlorine test kit to determine the amount of chlorine remaining in the water.
- Evaporation will not remove chloramine, which some companies offer as an alternative to chlorine. This method is also not recommended for drinking water treatment because contamination is highly likely to occur.
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Dissolve 1 teaspoon of ascorbic acid per 4 liters of water. Ascorbic acid powder (also known as vitamin C) has the effect of neutralizing chlorine. Simply sprinkle ascorbic acid in the water and stir. This method is most effective when you are dechlorinating the water used for watering plants or supplying a hydroponic system. [9] X Research Source
- Ascorbic acid is quite cheap and sold at aquarium stores.
- Ascorbic acid can reduce both chlorine and chloramine. It also does not significantly affect the taste of the water if you plan to use this method to treat drinking water.
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Use an ultraviolet lamp to dechlorinate the water. Place the water you want to dechlorinate as close to the UV source as possible. The amount of UV light needed to dechlorinate water depends on how much or how little water, the intensity of the UV light, and the presence of organic chemicals in the water. [10] X Trusted Source PubMed Central Go to Source
- Normally, you should treat chlorinated water with an ultraviolet lamp with a wavelength of 254 nm with a radiant energy density of 600 ml per 1cm2.
- Ultraviolet light will remove chloramine and chlorine. It is also a suitable dechlorination method for drinking water.
Advice
- You can also buy dechlorinated (filtered) water at grocery stores.
- Most dechlorination methods do not completely remove chlorine. Fish and plants have different tolerances for chlorine, so it’s a good idea to find out what chlorine levels are acceptable for your purposes and use a chlorine test kit to check your chlorine levels regularly if you’re concerned. .
X
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
There are 10 references cited in this article that you can view at the bottom of the page.
This article has been viewed 5,993 times.
If you’re concerned about chlorine in your tap water, whether it’s drinking water, aquarium water, or garden water, there are quick and easy ways to help you dechlorinate. Natural methods such as boiling or evaporating water are helpful when you are dealing with small amounts of water. However, with large amounts of water, you will need to use a dechlorinating chemical. In any case, you can invest in a water filtration system to remove chlorine at the source and save time.
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