Application of trichloroisocyanuric acid (TCCA) in swimming pool

Sterilization of swimming pools is the basic and most important aspect of a swimming pool.

Swimming pool disinfectant – use of trichloroisocyanuric acid:

In general swimming pools, add 90% trichloroisocyanuric acid granules or disinfection tablets at 3-5 grams per cubic meter (double it for new water). Ensure that the residual chlorine content of the swimming pool is 0.4-0.6ppm (DPD measured value). When dispensing the medicine, put it in evenly and start the circulating pump. After two hours, detect the residual chlorine. If the residual chlorine is lower than 0.5ppm, add 1KG (per thousand cubic meters of water) disinfectant. Disinfectant should be added and tested every day, and swimming pool disinfectant should be added when the swimming pool water does not meet the residual chlorine standard.

However, in actual operation, the residual chlorine in the swimming pool is constantly decreasing. If you want to keep it at 0.4~0.6ppm, you must continue to add disinfectant to the swimming pool to achieve the goal. Therefore, the general operation method is to apply the disinfectant once or twice a day, and choose to apply the disinfectant during the non-use time. The amount of the disinfectant often exceeds the standard residual chlorine requirement. But this is not absolute. The dosage should be based on the water quality of the pool water and the type of disinfectant used.


Precautions for disinfection of swimming pool water:

After the swimming pool is added with disinfectant, it will also volatilize while killing bacteria, that is, the concentration will continue to decrease. Therefore, in order to keep the residual chlorine in the swimming pool up to the national standard during the use time, it is necessary to use dosing equipment to continuously replenish it. the

However, our current swimming pools are basically dosing by hand. Therefore, the general practice is to increase the dosage before use, so that the residual chlorine concentration is slightly higher at the beginning, and then gradually decreases. But please note that the concentration of residual chlorine should not exceed 1.0mg/L, because too high residual chlorine will make swimmers feel uncomfortable. In addition, it is best to decide whether to add medicine in the middle according to the actual situation. the

Shock treatment should be carried out once a week at night (when a certain low concentration is maintained for a long time, bacteria and viruses will have adaptability, at this time, an excessive amount of disinfectant will be put in, so that the residual chlorine in the water will be 2-3 times higher than the normal one. fully sterilized once).

Only by maintaining a stable residual chlorine concentration can it have a good killing effect on bacteria, algae, etc. If this index is properly controlled, many sudden water quality problems will be avoided. In this way, for family swimming pools and swimming venues, there is no need to take various emergency treatments due to water quality deterioration, which can actually save water treatment costs; in addition, on-site inspections should be strengthened. Timely delivery of disinfectants (The amount of dosing can be determined according to the above calculation formula).

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