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Effect of excessive trichloroisocyanuric acid (TCCA) in swimming pool

Four different samples of chlorinated water with pH 2, 3, 4 and 5 were prepared from a mixture of trichloroisocyanuric acid (TCCA) tablets and tap water. The pH of the chlorinated water was measured using a pH meter (pH900, Precisa Gravimetrics AG, Dietikon, Switzerland). The artificial saliva used in this study was similar to that described by McKnight-Hanes and Whitford.
Trichloroisocyanuric acid (TCCA) was chosen for this study because it is commonly used in smaller pools, and in many countries. After hydrolysis in water, TCCA is converted to HOCL, which has strong microbial activity. The hydrolysis by-product, cyanuric acid, acts as a stabilizer and prevents conversion of HOCL into hypochlorite ion (OCL-) owing to sunshine and heat, which has low microbial activity. Cyanuric acid also decomposes to hydronium ion (H3O+) and cyanurate. High concentration of this H3O+ causes a decrease in pH level of pool water. Adding more  trichloroisocyanuric acid (TCCA) in pool water in order to obtain high efficiency of disinfectant, without checking pH and chlorine level, causes a low pH of the water.
Two-step method can effectively remove calcium carbonate and cyanuric acid impurities in obtaining higher quality TCCA product under optimum conditions obtained in the test, the trichloroisocyanuric acid (TCCA) yield of 88.5% , 90.8% available chlorine. Trichloroisocyanuric acid (TCCA) plant steam condensate recycling: the original production process, the steam condensate production process generated waste discharge from the basic, such a waste of energy, increased environmental pressure discharges, and therefore must take effective measures to maximize recycling steam condensate.