Water Treatment D study guide Questions with Complete Solutions A watercourse that flows continuously at all times of the year is called? - Correct Answers ✅Perennial stream.During the night, algae causes the pH of the water to? - Correct Answers ✅Decrease which of the following contributes to the creation of algae blooms? - Correct Answers ✅Increased nutrients Which of the following is found mainly in groundwater sources and forms a precipitate when oxidized? - Correct Answers ✅Iron The Riparian Doctrine is something called the? - Correct Answers ✅Rule of Reasonable Sharing Which of the following terms is defined as the killing or inactivation of pathogenic organisms in water? - Correct Answers ✅Disinfection Free Chlorine residual values are based on a contact time of at least? - Correct Answers ✅10 min What is the typical strength of calcium hypochlorite, i.e., available chlorine range? - Correct Answers ✅65%-70% 1 / 2
Water Treatment D study guide Questions with Complete Solutions The iron content of a raw water is 1.81 mg/L. What is the percent removal if the finished water contains 0.11 mg/L iron
- Correct Answers ✅94%
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Which of the following chemicals will raise pH? - Correct Answers ✅Soda ash,Lime and Caustic soda also raise the pH Which of the following should be used by an operator to test for residual chlorine? - Correct Answers ✅DPD Which one of the following is a major part of a turbidimeter? - Correct Answers ✅Light source Which of the following parameters is used to indicate the clarity of water? - Correct Answers ✅Turbidity pH is a measure of? - Correct Answers ✅Hydrogen ion concentration After chlorination, the free chlorine residual includes - Correct Answers ✅OCl- and HOCl