Research On Monitoring And Removal Methods Of Four Common Inorganic Salt Pollutants In Urban Drinking Water

Beginning with the Industrial Revolution,more and more in-depth research has begun on the transmission routes of epidemic diseases.In this process,contaminated water was discovered as the main carrier of transmission.In order not to be plagued by disease,humans began to explore ways to disinfect water and test standards that can ensure healthy drinking.Driven by the continuous wave of science,more and more testing items have been identified.However,with the continuous progress of industry and agriculture,the large discharge of industrial wastewater,the widespread use of drinking water disinfectants and chemical fertilizers have caused excessive pollution of the four inorganic salts of nitrate,chloride,sulfate and fluoride in the water.In order to ensure that the quality of drinking water is stable within the normal standard range,the content of four inorganic salts needs to be tested.In addition to the reasons caused by insufficient water supply,the aging and damage of the pipe network leads to problems in the quality of the terminal water supply,which is also the source of residents’ dissatisfaction with public water supply.In recent years,the city has replaced the old pipeline according to the plan in response to this problem,and this paper verifies the effect of the transformation by monitoring the content of major inorganic salt pollutants in the drinking water at the end of the water supply pipe network.In accordance with the requirements of the Sanitary Standard for Drinking Water,the content of four inorganic salts in the drinking water of a city was monitored for two years.The results were analyzed and a total of 605 samples were tested.All four inorganic salts were qualified for 583 samples,and the pass rate was 96.36%.Among them,300 samples were tested in 2019,and 285 qualified samples were tested,with a pass rate of 95%.In 2020,305 samples were tested and 298 qualified samples were tested,with a pass rate of 97.7%.The data shows that after the transformation of the pipe network,the pass rate of inorganic salt pollution in the drinking water terminal of the water supply terminal has been effectively improved,and the replacement of the problem pipeline has effectively solved the problem of the deterioration of the water quality after the factory water enters the water supply pipe network.In addition to the deterioration of water quality caused by the water supply network,the treatment capacity of the water plant itself is also one of the reasons for the problem of water quality.In this paper,the ability of the UF-RO dual membrane method to remove major inorganic salt contaminants from drinking water is verified by laboratory standards.After experiments,the removal rate of nitrate and fluoride inorganic salt pollutants reached more than 94%,and the water quality was stable and the fluctuation was small.It has been verified that compared with the traditional drinking water treatment method,the dual membrane method system has a more stable treatment capacity for raw water quality,and can make a good supplement to the deficiencies of the original treatment method.The continuous monitoring of water quality after the installation of the system,the fluctuation of the main inorganic salt concentration in drinking water tends to be stable,and the concentration of various inorganic salts is within the qualified concentration range required by the national standard,which stabilizes the ability to remove inorganic salt pollutants in drinking water,which provides experience for the method to be used for water treatment in drinking water plants.