Three important index factors affecting swimming pool water treatment

As we all know, for a swimming pool, the most important item is the pool water treatment. Before swimming pool water treatment, we need to test the water quality of the swimming pool, which is an important factor affecting the treatment of swimming pool water. Let's talk about the free residual chlorine, total coliform group and combined residual chlorine in the swimming pool water quality testing project.

1. Free residual chlorine 1. In the new swimming pool water treatment water quality standard, the limit value of free residual chlorine fluctuates greatly. It is based on the application characteristics of swimming pool water treatment and the situation when chlorine is used as an auxiliary disinfection to facilitate the planning of personnel and disinfection systems. Operators are sensitive to grasp. Usually when ozone, ultraviolet light and other disinfection are the main method, the lower limit value can be selected when chlorine disinfection is supplemented; the central value can be selected when the swimming load is small for special swimming pools; large public swimming pools with large swimming load, indoor sun swimming pools and outdoor open-air swimming pools Water treatment can choose the upper limit value. 2. The swimming pool water treatment regulation limits for free residual chlorine are only applicable to chlorine gas and chlorine product disinfectants.

3. Under the target conditions of satisfying the total number of bacteria and the total coliform group, the free residual chlorine should be kept at the minimum limit as much as possible. According to swimming pool water treatment information, 0.2mg/ml free residual chlorine can instantly kill Escherichia coli. 4. Free residual chlorine refers to the concentration of chlorine disinfectants that exist in the form of hypochlorite radicals in swimming pool water treatment.

Its purpose is to maintain the continuous bactericidal effect of pool water, to inhibit the reproduction of bacteria remaining in the water, to avoid cross-infection and to deal with the adverse effects of sudden increase in swimming load on the water quality of pool water treatment. It can also be used as an indicator signal that the pool water is recontaminated. Free residual chlorine is also called free residual chlorine.

2. Total coliforms: 1. Escherichia coli is a group of aerobic and non-anaerobic Gram-negative non-bacillus bacteria that can ferment lactose and produce acid gas when cultured at 36°C for 24 hours. When there are few coliform bacteria, it means that pathogenic bacteria do not exist, and the detection of coliform bacteria is also more convenient. Therefore, the coliform group is an important target to grasp the contamination status of the swimming pool water treatment by enteropathogenic bacteria and to evaluate the cleaning quality of the swimming pool water treatment.

2. Coliform bacteria exist in the human intestinal tract. If there is a large amount in the swimming pool water treatment, it means that the swimming pool water treatment has been polluted by human feces, indicating that the swimming pool water treatment has been polluted by intestinal bacteria or has This possibility reflects that the disinfection or backwashing of the swimming pool water treatment system is not enough during operation, and bacteria may multiply in the filter. 3. Coliform bacteria have stronger resistance than other intestinal pathogenic bacteria in clean water, so it is believed that when the coliform bacteria are killed, other pathogenic bacteria are also killed. Therefore, swimming pool water treatment chooses coliform bacteria as the target of water pollution.

4. The total coliforms are expressed internationally by the maximum probable number (MPN) of total coliforms polluted in 100ml water samples. China's latest standards require that it cannot be detected in 100ml of water samples. 3. Combined residual chlorine: 1. Combined residual chlorine is highly irritating and can cause nasal mucositis and pharyngitis.

Therefore, it is necessary to limit the concentration of combined residual chlorine in swimming pool water treatment. The ideal concentration should be half or less of the free chlorine concentration. 2. Combined residual chlorine refers to the concentration of chlorine disinfectants that exist in the form of chloramine and other compounds in swimming pool water treatment.

It is formed by the reaction between chlorine and pollutants in swimming pool water treatment, and as a result, the disinfection and sterilization ability of chlorine is reduced. In the swimming pool water treatment, the urea in the sweat and urine brought in by swimmers is decomposed and always exists in the pool water. The reaction product of ammonia and chlorine is chloramine. This is the combined residual chlorine in the standard.

Also called associative residual chlorine. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..