Carbon-based Tetrasilver Tetroxide Removal Of Contaminants In Drinking Water Research

The safety of drinking water is the basic conditions to protect the health for living,however, drinking water resources are being subjected to increasingly serious pollution,water pollution caused by a variety of environmental problems, health problems, an endless stream.In recent years, various types of water pollution incidents continue to occur,the general water factorys are difficult to cope with them,to pose a threat to urban water supply.Therefore, the search for simple and effective water treatment technology is of great significance.In this paper,by studying the treatment effect of Carbon-based tetrasilver tetroxide to PAEs, aniline, anionic surfactant in drinking water,and to coconut shell carbon as a comparative test, from the adsorption time, solution pH, adsorption isotherms and dynamic filtration Experimental Study on Removal effect.Adsorption rate of three kinds of substances are decreasing over time, the former 10min fast adsorption, followed by a gradual slow absorption rate.30min adsorption , the adsorption capacity of carbon-based tetrasilver tetroxide can reach over 80%,2h after the adsorption achieving a balance. the best solution pH of adsorption of PAEs is neutral Piansuan,for aniline pH> 5,for the LAS pH of about 5 ~ 6.By studying the Aniline and LAS by adsorption isotherm experiments, we can be drawn Freundlich isotherm model to be used to describe adsorption behavior.In the three kinds of PAEs concentration gradient, when the filtration velocity of 1.2m / h,the carbon-based tetrasilver tetroxide to the total removal rate of PAEs at 90.08% ~ 93.62%,between the influent concentration of 20μg / L and 50μg / L,the carbon-based tetrasilver tetroxide columns of effective carbon layer thickness is 10cm,in the influent concentration of 100μg / L,the cCarbon-based tetrasilver tetroxide columns of effective carbon layer thickness is 20cm, Filtration rate increases, Carbon-based tetrasilver tetroxide columns on the removal rate of PAEs increased as the filtration rate decline.In the five kinds of aniline concentration gradient,when the filtration velocity of 1.2m / h,the carbon-based tetrasilver tetroxide columns of effective carbon layer thickness are 10cm,in the contact time of 5min or less, all the water can reach the surface of aniline water environmental quality standards limits, filtration rate increases, Carbon-based tetrasilver tetroxide columns on the aniline removal rate increased as the filtration rate decline.In the five kinds of LAS concentration gradient,when the filtration velocity of 1.2m / h,the Carbon-based tetrasilver tetroxide columns of effective carbon layer thickness are 20cm,in the contact time of 10min or less, all LAS can reach the life hygienic standards for drinking water limits.filtration rate increases,Carbon-based tetrasilver tetroxide columns on the LAS removal rate increased as the filtration rate decline.In thinking of carbon-based tetrasilver tetroxide is used in the treatment of drinking water,and therefore carbon-based tetrasilver tetroxide for anti-bacterial properties and safety performance studied,the results showed that carbon-based tetrasilver tetroxide has good bactericidal antibacterial properties,it will kill the bacteria survived in water in 10min,and after 24h there is still a good antibacterial properties,bacteria have not yet detected in the water; and carbon-based tetrasilver tetroxide is a safe water treatment material,the soaking time is 540min,the water solubility of silver is few,and far less than the health standard of drinking water limits of silver 50μg / L.