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Ozone-Bromide Interactions in Water Treatment 水处理中的臭氧-溴相互作用
发布日期: 1991-01-01
溴的存在会导致臭氧氧化时产生溴化消毒副产物(DBPs)。本研究考察了含溴离子的天然水中溴化DBP的形成。臭氧氧化含有溴离子的水会产生有机和无机副产品。副产物的形成与溴离子浓度、有机前体的来源和浓度、pH值、臭氧剂量、温度、DOC、碱度和反应时间有关;讨论了每个参数的影响。低pH下有利于有机副产物的形成,而高pH下有利于溴酸盐的形成。溴离子浓度的增加导致副产物和总有机溴(TOBr)的数量增加。 副产品的控制可以通过使用过氧化物(过氧化氢加臭氧)或氨来实现。以溴酸盐增加25%为代价,PEROXONE生产的有机副产品减少了55%。氨的加入使有机和无机副产物减少了30%。
The presence of bromide can lead to the formation of brominated disinfection by-products (DBPs) upon ozonation. This study looked into the formation of brominated DBPs from natural waters containing the bromide ion. Ozonation of waters containing bromide ion produces both organic and inorganic by-products. Formation of by-products is a function of bromide ion concentration, the source and concentration of organic precursors, pH, ozone dose, temperature, DOC, alkalinity and reaction time; the effect of each of these parameters are discussed. Formation of organic by-products is favored at low pH whereas formation of bromate is favored at high pH. An increase in bromide ion concentration resulted in increased amounts of by-products and total organic bromine (TOBr). Control of by-products can be effected by using PEROXONE (hydrogen peroxide plus ozone) or ammonia. PEROXONE produced 55% less organic by-products at the cost of a 25% increase in bromate. Ammonia addition resulted in a 30% decrease of both organic and inorganic by-products.
分类信息
发布单位或类别: 美国-美国给水工程协会
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