Chlorine sensor is applied to CL2 leakage detection in waterworks

        Chlorine disinfection of tap water is a relatively common water safety detection method in the world at present. Chlorine disinfection can not only effectively eliminate harmful substances in water, but also is recognized as one of the efficient and reliable detection methods of tap water due to its very low cost. However, with the continuous progress of modern science, some scientists proposed that the tap water detected by chlorine may contain carcinogens, which led to the loss of confidence of ordinary consumers in the quality of tap water. However, some experts believe that the reasonable use of chlorine gas detection will not only produce toxic substances, but also greatly reduce the cost of tap water detection, thus reducing the price of tap water for Chinese residents. So, is chlorine gas used in tap water harmful to our health?

        Before understanding whether chlorine in tap water is harmful to our health, we should first understand the main principle of chlorine disinfection in tap water: the main principle of chlorine detection in tap water is to use chlorine dioxide generator to produce chlorine. Chlorine is easy to dissolve in water. Through the combination of chlorine and water, hypochloric acid and hydrochloric acid are produced, and the generated hypochloric acid has an ideal detection effect on microorganisms and bacteria in tap water. The effect of using chlorine dioxide generator to detect tap water is better than that of traditional bleaching powder detection and more recognized by people.

So, is chlorine harmful to our human body?

        First of all, chlorine itself does have certain harm to our body. It will stimulate our eyes, nose, throat and other organs, so acute pulmonary edema or pneumonia will cause serious harm to our body or death when chlorine reaches a certain dose.

      However, the residual amount of chlorine used in China’s waterworks is far lower than the dose that causes harm to our human body. At the same time, chlorine, as a volatile chemical, has been slowly lost during the storage of tap water, and the lifestyle of modern residents also determines that chlorine will not cause harm to our human body. Because the living habit of Chinese residents is often to boil the tap water before drinking it. In the process of boiling, the chlorine in the tap water has been evaporated. Even if the residual chlorine enters our body, it will be discharged with the metabolism, and will not cause harm to our body, let alone achieve carcinogenesis. Therefore, we remind you to avoid drinking raw tap water directly in daily life, and try to boil it before drinking, so as to improve the safety of tap water.

Why chlorine can be used to detect tap water

      The waterworks introduce water from rivers, lakes and seas into the waterworks. After a series of technological processes, such as coagulation, sedimentation, filtration, delivery to the clean water tank and testing, the water is delivered to thousands of households through the high-pressure water supply pump. The tap water is the domestic and production water that has been tested and purified and meets certain standards, and is the necessary guarantee for people’s basic daily survival. The detection of tap water is directly related to the safety of water use, and thus affects the health and safety of every user. There are many ways to detect tap water. At present, most of China’s water plants use chlorine gas for detection.

Treatment process of water plant

         Chlorine detection has been used for nearly 100 years because of its unique advantages. Chlorine gas has good detection effect. It can achieve good detection effect at low concentration, and has little harm to human body. Moreover, its cost is relatively low and its process technology is mature and reliable. After chlorine is introduced into the water (the detected chlorine dosage) (liquid chlorine is between 1.0-2.5g/m3, which is strictly regulated in the national standard), chlorine will react with water to generate hypochloric acid, which is highly oxidizing.

         Up to now, chlorine detection is still relatively mature, and there is no tap water detection method that can completely replace chlorine. In fact, there have been dozens of detection methods, such as bleaching powder, iodine, etc., but chemical detection is a double-edged sword, which will inevitably produce certain side effects. However, after comprehensive consideration, from the perspective of the safety of tap water detection, chlorine detection is better.

           Chlorine is a toxic gas with a yellow-green color and a strong pungent smell, which can cause people to sneeze, cough, tears, suffocation and other symptoms. It mainly invades the human body through the respiratory tract and dissolves in the water contained in the mucous membrane to generate hypochloric acid and hydrochloric acid, causing damage to the respiratory tract mucous membrane. Hypochloric acid causes strong oxidation of tissues. Hydrochloric acid stimulates the mucous membrane to produce inflammatory swelling, which makes the mucous membrane of the respiratory tract swollen, secretes a large amount of mucus, and causes dyspnea. Therefore, the obvious symptom of chlorine poisoning is severe cough. When the symptoms are serious, pulmonary edema will occur and then cause death.

         For algae and other things in the water, the strong oxidation of hypochlorite can destroy their cell walls, oxidize their internal enzymes and cut off their protein synthesis, which will lead to their death and achieve the purpose of detection. However, due to its negative charge and poor detection effect, chlorine will be used instead of bleaching powder for detection.

        However, it is important to pay attention to the amount of chlorine in the detection of chlorine. After all, chlorine is a toxic gas, which mainly invades the human body through breathing, dissolves in the water in the mucous membrane, produces hypochloric acid and hydrochloric acid, and damages the mucous membrane of the upper respiratory tract. Hypochloric acid causes strong oxidation of tissues; Hydrochloric acid stimulates inflammatory swelling, edema of respiratory mucosa, secretion of a large amount of mucus, causing dyspnea, so the obvious symptom of chlorine poisoning is severe cough. When the symptoms are serious, pulmonary edema will occur, making circulation difficult and leading to death. Therefore, when using the chlorine detection method, we must pay attention to monitoring the chlorine content. To solve this problem, Sangbay S4-CL2 chlorine sensor can effectively detect whether the chlorine content is beyond the set range, so that the relevant staff can make timely adjustments.

       Chlorine sensor is used for tap water detection, which greatly improves the quality of human life and reduces the occurrence of some discomfort. Compared with ozone, chlorine has great advantages, such as lower cost and mature technology, which will be beneficial to residents’ life and lower water price. Through continuous technological upgrading, better tap water detection schemes will emerge.