The hazards of excess residual chlorine in water

Simply put, the residual chlorine detector is an instrument for rapid detection of residual chlorine. The instrument is equivalent to a small spectrophotometer. After the water sample is reacted with a special reagent, the residual chlorine/total chlorine value is calculated by the spectrophotometric method. . The characteristic of the residual chlorine detector is that the reagents required for the detection process are designed into a special reagent package, and the instrument itself also contains a standard curve. Users do not need professional knowledge to prepare reagents and curves, and can accurately detect within a few minutes. The content of residual chlorine can facilitate enterprises to quickly monitor the content of residual chlorine in water. In order to ensure production and life, wastewater monitoring and detection has become a long-term important task in urban planning and governance. The comprehensive sewage discharge standard, that is, the chlorine content (total residual chlorine) in sewage has become an important indicator in sewage treatment. Once it exceeds the standard, it will bring harm to production and life. The specific hazards are as follows. 1. Drinking hazards: After tap water is boiled, it will not cause harm to health. Microorganisms and bacteria have been killed. If the water contains organic decay substances, it will produce carcinogens such as carcinogens after being heated by water. If residual chlorine cannot be removed, heated coffee, tea, and soup will generate twice as many carcinogens in the human body. Long-term drinking of chlorinated water will lead to heart disease, coronary atherosclerosis, anemia and other symptoms. If pregnant women drink it for a long time, it may have a certain impact on the growth of the fetal heart and lungs, and may even cause arrhythmia and lung dysfunction in newborns. 2. Washing hazards: Bathing with water containing residual chlorine, 40% of the total amount of chlorine in the bathroom is inhaled through the respiratory tract, and 30% is absorbed by the skin, which is several times the amount of chlorine that enters the human body through drinking, and mild cases cause itching , In severe cases, the risk of cancer increases by 30%. Especially when bathing children, chlorine can cause dryness, breakage, and even split ends of the hair, as well as bleaching of the skin, peeling of the skin layer, and even skin allergies. After chlorine is inhaled into the lungs through the respiratory tract, it will damage the respiratory cells and easily lead to asthma and emphysema. 3. Cleaning hazards: How does water containing residual chlorine affect vegetables, fruits, grains, etc.? Chlorine will destroy nutrients such as vitamins in vegetables, fruits, and grains, and seriously affect the absorption of nutrients by the human body. Chlorine is combined with natural organic matter in water, especially humus. It is recognized as a carcinogenic, teratogenic, and mutagenic 'three-cause' harmful substance, which is very harmful to the body. The instrument adopts the DPD method, which uses the photoelectric colorimetric detection principle to replace the traditional visual colorimetric method. Human error is eliminated, so the measurement resolution is greatly improved. When measuring, when the water sample to be tested is put into the DPD tablet, the water sample will turn red. Then put the water sample into the photoelectric colorimetric seat, and the meter will compare the shade of red to obtain the concentration of residual chlorine. Applicable to large, medium and small water plants and industrial and mining enterprises, food and beverage, medical and health, CDC, secondary water supply, breeding, swimming pools and other places to detect the residual chlorine concentration of domestic or industrial water, so as to control the residual chlorine in the water to meet the regulations water quality standards.
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