Balance and Control of Microbials and Disinfection Byproducts in Packaged Drinking Water
In the production of packaged drinking water,chlorination can produce organic disinfection byproducts(DBPs)such as trihalomethanes,while chlorine dioxide disinfection resulted in increasing the inorganic byproducts of chlorite by chlorination.Nitrite can be easily prominent when ultraviolet irradiation sterilizes water.Adding ozone in the product to inhibit bacteria increase bromate risk.In this paper,the effects of disinfection methods on water composition and the mechanism and transformation relationship between disinfection by-products are studied.Process improvement methods including precise disinfectant dosing,residual-free washing,UV irradiation dose control,nitrate safety limit,and reduction of ozone action time are used to eliminate the risks of disinfection byproducts.According to the European Union bacteria control standards,starting from respecting and protecting the natural characteristics of water and the whole process of sanitation control,combined with the actual case of good control of packaged WTPs,moderate disinfection,balance the relationship between microbial control and disinfection byproducts.
trihalomethane(THM)chlorine dioxide(ClO2)chloriteozonebromateUV exposurenitritemicrobial control
万方数据
维普
