Swimming Pool Water Disinfectant Series: Trichloroisocyanuric Acid (TCCA)

1. Outdoor Pool Pollutants

Natural Impurities:The core source of pollution. Dust, pollen, catkins, fallen leaves in the air, sediment and grass clippings around the pool, as well as bird droppings and mosquitoes, fall into the water with the wind. This not only increases turbidity, but also becomes a carrier for microbial growth, consumes disinfectants and reduces disinfection effects.

Precipitation: Rainwater dilutes the concentration of disinfectants and disrupts water quality balance. At the same time, atmospheric pollutants carried by rainwater itself increase the water body load.

Weather Effects: High temperatures and strong sunlight promote algae growth and speed up disinfectant decomposition.

Human Factors: Sweat, sebum, dander brought in by swimmers, as well as sunscreen, skin care products and beverage residues.

2. Indoor Pool Pollutants

Compared with outdoor pools, indoor pools are not affected by natural impurities and precipitation, but other sources of pollution are more concentrated.

Human Factors:The same as outdoor swimming pools, but the density of swimmers in indoor pools is higher, and pollutants such as sweat, sebum and dander are more concentrated.

Facility&Operational Issues:Inadequate cleaning of pool walls, ladders, or mats can harbor bacteria. Improper water quality control operations, such as uneven disinfectant dosing and untimely water change, will also lead to pollutant accumulation and water quality deterioration.

Chlorine Disinfection:Includes Sodium Dichloroisocyanurate (SDIC), Trichloroisocyanuric Acid (TCCA), and Calcium Hypochlorite (CHC), etc. Chlorine disinfectants have good bactericidal effect, simple operation and low cost, so they are often used for pool disinfection or as long-acting disinfectants.

Ozone Disinfection:This method does not produce pungent odor. However, ozone is prone to volatilization and can irritate the respiratory tract. Therefore, the ozone-containing water must be removed before it enters the swimming pool, and chlorine disinfection is still necessary after it enters the pool.. In addition, ozone disinfection requires a complete set of ozone generating devices, which has the problem of high cost, increasing disinfection cost and operation process, and the dosage is also difficult to control.

Chlorine Dioxide Disinfection:Chlorine dioxide has a short disinfection time and good effect, but  Liquid and gaseous chlorine dioxide are unstable in nature, easy to explode under strong light, impact, etc., with potential safety hazards, not conducive to long-term storage, and also produce disinfection by-products. Therefore, the chemical agents must be used in situ to generate ClO2. These agents are highly hazardous. This limits the application of ClO2.

Strong Bactericidal Power:Commonly used TCCA has available chlorine contents of 90%, which is much higher than traditional calcium hypochlorite. It can quickly kill harmful microorganisms such as bacteria, fungi, spores, molds and Vibrio cholerae in the pool, achieve strong disinfection with low dosage, and also inhibit algae reproduction, ensuring water quality safety from the source.

Excellent Stability:Under proper storage, it loses only 1% of its active chlorine over two years. Its slow-release characteristic ensures stable residual chlorine levels without the need for excessive human intervention.

Versatile Forms: Available as TCCA Tablets, granules, and powder, making it easy to transport and dose for any pool size. The TCCA multifunctional tablets additionally offer functions such as algae control and clarification, thereby further reducing the maintenance workload.