Research On The Disinfection Effect And Application Of Trichloroisocyanuric Acid In Swimming Pool Water

Traditional swimming pool disinfection technology has been unable to meet people's requirements,so looking for an efficient and safe swimming pool disinfectant is imminent.Among all the disinfectants of swimming pool water,trichloroisocyanuric acid is well recognized by the majority of swimming pool management and operating units because of its less disinfection by-products.However,there are few studies on the disinfection effect of trichloroisocyanuric acid on swimming pool water.Therefore,a series of studies on the disinfection effect and application of trichloroisocyanuric acid in swimming pool water were carried out in this paper.In this study,the water quality of different locations of the swimming pool was analyzed by detecting the pool water indicators at different locations.The experimental results show that the organic matter and humus attached to the pipe wall of the swimming pool cause the organic content of the pool to increase;the TOC(total organic carbon)in the middle of the pool is higher than the TOC at the pool;the pH distribution of the entire swimming pool is stable;the residual chlorine in the middle of the pool is lowest.As for the influencing factors of the residual chlorine attenuation of swimming pool water under the action of trichloroisocyanuric acid,we conducted in-depth research and regular exploration from five aspects of initial chlorine concentration,organic matter concentration,temperature,pH and reducing ions and compared the disinfection efficiency.Finally,according to the influence of various factors on the decay law of residual chlorine,the decay model of residual chlorine is constructed.The experimental results show that trichloroisocyanuric acid belongs to the slow release type,the initial chlorine concentration increases first and then decreases.In the range of the initial chlorine concentration of 1mg / L ~ 2mg / L,the higher the initial chlorine concentration,the lower the residual chlorine attenuation coefficient.And the higher the concentration of organic matter,the higher the residual chlorine attenuation coefficient.Besides,between 20 ? ~ 30 ?,the temperature can accelerate the residual chlorine attenuation.In the range of pH 6.5 ~ 7.5,the lower the pH,the higher the residual chlorine attenuation coefficient.And the higher the reducing ion concentration,the faster the residual chlorine attenuation coefficient.According to the monitoring and result analysis of the actual swimming pool,the practical application effect of trichloroisocyanuric acid was studied,and the disinfection effect of trichloroisocyanuric acid was evaluated by the indexes of economy and safety.Through statistical analysis,the results show that the actual monitoring value of the swimming pool water is more accurate,which can be used as the safety evaluation index of the swimming pool.It is proved that the swimming pool water using trichloroisocyanuric acid as the disinfectant has a stable operation throughout the year.There is a big difference in dosage between summer and winter.When the pH is equal to 7.5,the average daily dosage of 30 people and 100 people is 1: 1.95,which is very different.So it should be considered to reduce the dosage according to the water quality in winter and properly increase the amount of medicine administered in summer.The ratio of the amount of dosage to the total volume of the pool is about 1.1 ~ 1.25,which can meet the normal water quality.This research can provide reference and direction for the invention of more convenient and accurate online swimming pool monitoring system.In the later stage,the pool water treatment system will be an efficient,stable and economic system,which can accurately control the pool water indicators and provide a better pool water environment for swimmers.