Excessive residual chlorine in swimming pools can have adverse effects on human health and water quality safety. The following are specific effects and analysis: 1. Irritation to the respiratory system Excessive residual chlorine will release chlorine gas, which has a strong pungent odor and has a strong irritating effect on the upper respiratory tract mucosa. Long-term exposure to high-concentration chlorine gas may cause respiratory burns, acute pulmonary edema, and even acute failure of lung and heart function. 2. Damage to the skin and eyes Excessive residual chlorine can cause obvious irritation to the skin and eyes. Swimmers may feel stinging and tearing in the eyes, dry and cracked skin, and even allergic reactions. In addition, residual chlorine can also destroy the keratin structure of hair, causing hair to turn yellow, dry and brittle. 3. Produce carcinogens Residual chlorine reacts chemically with organic matter in water (such as sweat, urine, dandruff, etc.), which may produce harmful byproducts such as chloroform. These compounds have potential carcinogenic risks, and long-term exposure may pose a threat to human health. 4. Impact on water clarity While an appropriate amount of residual chlorine helps keep water clear, excessive residual chlorine may cause unstable water quality and even cause excessive turbidity. Excessive turbidity not only affects swimmers' vision and increases the risk of accidents, but may also indicate that the suspended solids content in the water is too high, further threatening health. 5. Discomfort for swimmers High concentrations of residual chlorine will make the swimming pool water emit a pungent odor, affecting swimmers' comfort. In addition, excessive residual chlorine may also cause swimmers to feel dizzy, nauseous and other symptoms in the water. 6. Impact on swimming pool equipment Excessive residual chlorine may accelerate the corrosion of swimming pool equipment, especially metal parts. This will not only shorten the service life of the equipment, but also increase maintenance costs. 7. Solution To deal with the problem of excessive residual chlorine, swimming pool operators can take the following measures: Adjust the amount of disinfectant: Strictly follow the instructions for use of the disinfectant to avoid excessive addition. Use dechlorinators: In emergency situations, special dechlorinators can be used to reduce the residual chlorine concentration. Regularly test water quality: Regularly test residual chlorine concentration and other water quality indicators (such as pH value, ammonia nitrogen, etc.). Optimize water treatment process: Reduce the generation of residual chlorine by adjusting the operating parameters of water treatment equipment (such as flow rate, pH value, etc.). https://www.renkeer.com/product/residual-chlorine-meter/