IBWA CPO Exam Study Set - Chapter 4 QUESTIONS WITH COMPLETE SOLUTIONS

Particulate (mechanical) filtration, carbon filtration, reverse osmosis, demineralization (deionization & softening), distillation, mineral and fluoride addition, and disinfection and disinfection byproducts are all examples of ____________________ ______________________ processes correct answer: water treatment Soluble iron is generally found in ground water with high _______________ ____________________ content correct answer: carbon dioxide Soluble iron is changed to insoluble ferric iron by ___________________, causing reddish-brown precipitate to form in finished product bottles correct answer: oxygen _________________ and __________________ may be removed by oxidation/filtration, complexation, or manganese-zeolite treatment correct answer: iron, manganese Excessive __________________ in water is removed by using a strong-base ion exchange resin correct answer: nitrate Strong-base ion exchange resins remove undesirable _________________, including sulfate, nitrite, chloride, and bicarbonate correct answer: anions ____________________ is removed by passing water through a bed of granular activated alumina correct answer: Fluoride ____________________ are used instead of chlorine as a disinfection agent in some areas for municipal water supplies, because high levels of trihalomethanes are formed by the reaction of chlorine with organic materials in raw water correct answer: Chloramines Mixed-bed ion exchange removes _________________ very easily correct answer: chloramines Water softening and reverse osmosis are ineffective, and activated carbon is very inefficient in _________________ removal correct answer: chloramine