Engineering, 23.04.2020 16:53, mrhortert540
When drinking water treatment plants chlorinate water, the chlorine must remain in contact with the water for at least 30 minutes before being delivered to customers. A water plant operator wishes to know if his existing 10,000-gallon storage tank can provide this HRT. He does a wash-out tracer test with fluoride salt (conservative). The initial concentration is 12 mg/L and after an hour of feeding non-fluoridated water through the tank at 20 gpm, the concentration has dropped to 2 mg/L. Does the tank have the required HRT? [Yes, the HRT is 33.5 minutes]?
Answers: 2
Other questions on the subject: Engineering
Engineering, 04.07.2019 18:10, skpdancer1605
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
Engineering, 04.07.2019 18:10, jesuslovesusall3
Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs
Answers: 2
Engineering, 04.07.2019 18:20, rbgrh9465
An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.
Answers: 3
Engineering, 04.07.2019 18:20, rhussein6452
Wiy doeres rere okhn a pump whon working betwon the same pressure range?
Answers: 2
Do you know the correct answer?
When drinking water treatment plants chlorinate water, the chlorine must remain in contact with the...
Questions in other subjects:
