The gas used to disinfect water in swimming pools is Chlorine.
Chlorine is the most commonly used disinfectant in swimming pools to kill bacteria, viruses, and other microorganisms. It helps to maintain the cleanliness and safety of the water.
Some key points to note about the use of chlorine in swimming pools are:
1. Disinfectant properties: Chlorine is a powerful disinfectant that effectively kills harmful microorganisms in the water. It can destroy bacteria, viruses, and algae that can cause infections and illnesses.
2. Chlorine compounds: Chlorine is typically used in the form of chlorine compounds such as calcium hypochlorite, sodium hypochlorite, or chlorine gas. These compounds release chlorine into the water, providing a continuous disinfection effect.
3. Chlorine dosing: The amount of chlorine needed to disinfect a swimming pool depends on various factors such as the pool size, water temperature, and usage. It is important to maintain the chlorine levels within the recommended range to ensure effective disinfection.
4. Chlorine byproducts: When chlorine reacts with organic matter in the water, it can form disinfection byproducts (DBPs) such as chloramines. Chloramines can cause eye and skin irritation and have a strong odor. Regular monitoring and maintenance of chlorine levels can help minimize the formation of DBPs.
5. Chlorine safety: While chlorine is effective in disinfecting swimming pool water, it should be used with caution. It is important to follow the manufacturer's instructions for handling and dosing chlorine products. Overexposure to chlorine can be harmful and may cause respiratory or skin irritation.
In conclusion, chlorine gas is used to disinfect water in swimming pools due to its powerful disinfectant properties. It helps to eliminate harmful microorganisms and maintain the cleanliness and safety of the pool water.