To obtain a fee residual of chlorine of 0.5 mg/L, a dose of 10 mg/L is...
A water treatment plant (10 MGD) uses 50 kg/d of chlorine. The residual chlorine after 30 minutes contact time is 0.55 mg/L. Find the chlorine dosage and chlorine demand of the water.
b) Chlorine usage in the water treatment of 15, 000 m3/day is 5 kg/ da The residual concentration after 10 min contact is 0,1 mg the dosage and chlorine demand of the water. (6) /L. Calculate Supplementary Information: 1000 < L/dio < 2000; A = v. % renova|-(Ci-Ce)/Ci *100 Table-1 Turbidity concentration standard Parameter WHO EPA unit Turbidity 0.3 mg/L
2. A dose of 41 mg/L of alum is used in coagulating a turbid water at a water treatment plant treating a flow rate of 32 million gallons per day (mgd). The natural alkalinity of the source water is 10 mg/L (as CaCO3). a. Will the alkalinity be completely consumed in the reaction? If not, then how much alkalinity will be left? If so, then what concentration of caustic soda (NaOH) must be added to avoid a change in the...
2. a) What is the concentration of chlorine in mg/L of household bleach that contains 6 percent by weight of Cl2. Note the density of water is approximately 1,000 kg/m and specific gravity of Cl2 = 1.41 at 20 °C. b) If you are to use this bleach solution to treat 1,000 L water for disinfection, what is the volume of the bleach solution should you use to obtain a target chlorine concentration 1 mg/L?
A water treatment plant with an average flow of Q-1,0 m3/s treats its water with alum at a dose of 30 mg/L. Alum coagulation is used to remove particulate matter, reduce the concentration of organic matter, and reduce the alkalinity of the water according to Equation 10-1. If the organic matter concentration is reduced from 10 mg/L to 2 mg/L. determine the total mass of Al(OH)3 removed per day O 708 kad 652 kg/d 674 O 720 kg • If...
A water treatment plant is using chlorine for disinfection of its finished water. It is considering the use of on-site generation equipment that utilizes electrolysis to transform a brine solution into chorine gas. The equipment is designed to operate at 30 amps and the brine solution is 30% sodium chloride. What are the daily power requirements of this process if the applied chlorine dose is required for inactivation 1 log Giardia with the following plant conditions: Assuming the baffling factor...
(
Water & Westwater Treatment Curse )
a) Write the advantage, limitation and process design of any three disinfectants during the water treatment. Also, evaluate the design alternative from the comparisons. (9) b) Chlorine usage in the water treatment of 15, 000 m3/day is 5 kg/ day. The residual concentration after 10 min contact is 0,1 mg/L. Calculate the dosage and chlorine demand of the water. (6)
i. A 150MLD water treatment plant needs a dosage of 2 ppm chlorine to maintain a residual chlorine of 1.2 mg/L. What is the quantity of chlorine required (in kg) for the whole month of August 2020? ii. Describe three (3) approaches that can be used for water disinfection.
Suppose that a finished drinking water contains 0.5 mg/L ammonium nitrogen that becomes nitrified by biofilms in the water distribution system. How much chlorine residual will this nitrite consume?
The following water quality data are available for a community Water quality Ca2+ = 60 mg/l (as species) Mg2+ = 40 mg/l (as species) HCO3- = 220 mg/l as CaCO3 CO2 = 7 mg/l (as species) pH = 7.6 Final desired hardness = 80 mg/l as CaCO3. The flow rate of the treatment plant is 0.24 m3/s. a. Calculate the total, carbonate, and non-carbonate hardness b. Calculate the amount of lime (as mg/l of CaO) needed to soften the water...