Question

hyphochoride at 12% by mass is used to disinfect water, the flow rate of water is...

hyphochoride at 12% by mass is used to disinfect water, the flow rate of water is 260 m3/h the hyhpochroride dosing pump is at 20l/h

a) How long will it take to disinfect ?

b) how much chorine should be in drinking water after this time ?

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Part a

Hypochloride is used in potable water for disinfection at 12% by mass.

Mass flow rate of water = volumetric flow rate x density

= 260 m3/h x 1000 kg/m3

= 260000 kg/h

Dosing rate of Hypochloride = 260000 kg/h x 0.12

= 31200 kg/h

Volume of Hypochloride required = mass/density

= 31200 kg / (1110kg/m3)

= 28.11 m3

Time will take to disinfect

= 28.11 m3 / (20 L/h x 1m3/1000L)

= 1405.5 hr x 1day/24hr

= 58.56 days or 59 days

Part b

% chlorine in hypochloride = 47.69%

Chlorine in drinking water = 31200 x 0.4769

= 14879.28 kg

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The drinking water treatment plant is typically upgraded in terms of both water quantity (flow rate)...
The drinking water treatment plant is typically upgraded in terms of both water quantity (flow rate) and quality (conversion). At present, 90% of a contaminant A is degraded by a first-order reaction in a single CSTR treating source water. We plan to add an identical reactor having the same volume to the existing one in series in order to improve the performance of current treatment plant. (a) For the same flow rate as presently used, how will this addition affect...
A pump is pumping water at a flow rate of Q = 125 Liter per minute...
A pump is pumping water at a flow rate of Q = 125 Liter per minute against a head of 18 meters. Assuming the mechanical efficiency of 85 %, what is the shaft power of the pump required for the pump in Watts? Assume water density at 1000 kg/m3 and gravitational acceleration g = 9.81 m/s2.
An initially empty tank is filled with water. The pump used is a displacement pump that...
An initially empty tank is filled with water. The pump used is a displacement pump that provides a flow of Q=0.5*(1+sin(t/30)) m3/min, where t is in seconds. Calculate the volume in the tank after 1hr
The rotation speed of a centrifugal water pump is 1500 rpm, its flow rate is 15...
The rotation speed of a centrifugal water pump is 1500 rpm, its flow rate is 15 L / s, the rotor diameter is 0.2 m at the outlet, the rotor width at the outlet is 0.01 m and the mechanical efficiency is 0.92. For the fluid entering the rotor in the axial direction, the wing angle is given as 30o at the outlet. What power should be given to the shaft of this pump? (ρwater = 1000 kg / m3)
Calculate the mass flow rate of heating medium (water) required in pasteurization of 1000 kg/h milk...
Calculate the mass flow rate of heating medium (water) required in pasteurization of 1000 kg/h milk from 45°C to 72°C. Water enters heat exchanger at 90°C and leaves at 75°C. Heat loss from the exchanger to the ambience is estimated at 1 kJ/s. Take heat capacities of water and milk as 4.2 and 3.9 kJ/kg°C, respectively.
City water will be cooled in a heat exchanger by sea water entering at 15°C. The...
City water will be cooled in a heat exchanger by sea water entering at 15°C. The outlet temperature of the sea water is 20°C. City water will be recirculated to reduce water consumption. The suction line of the pump has an inner diameter of 154 mm, is 22 m long, and has two 90° bends and a hinged check valve. The pipe from the pump to the heat exchanger has an inner diameter of 127 mm, is 140 m long,...
Assuming that water has a density of exactly 1 g/cm3, find the mass of one cubic...
Assuming that water has a density of exactly 1 g/cm3, find the mass of one cubic meter of water in kilograms. (b) Suppose that it takes 10.0 h to drain a container of 5700 m3 of water. What is the "mass flow rate," in kilograms per second, of water from the container?
The King family and the Mitchell family each used their sprinklers last summer. The water output...
The King family and the Mitchell family each used their sprinklers last summer. The water output rate for the King family's sprinkler was 20L per hour. The water output rate for the Mitchell family's sprinkler was 35L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1400L . How long was each sprinkler used? King's: Mitchell:
Fresh apple juice contains 75% water flowing at a mass flow rate of 200 kg/h. The...
Fresh apple juice contains 75% water flowing at a mass flow rate of 200 kg/h. The fresh juice is concentrated in an evaporation process. A portion of the fresh feed is bypassed to meet the evaporator maximum capacity. The bypass stream joins the evaporator outlet stream. Ninety percent of the water entering the evaporator is evaporated. The concentrated apple juice contains 25% water. Draw the process flow sheet and calculate the mass flow rates of produced and evaporated streams. provide...
A Venturi tube may be used as a fluid flow meter. If the fluid flow rate...
A Venturi tube may be used as a fluid flow meter. If the fluid flow rate in m3/s is 2.2 * 10-3 and the radius R1 = 2.4 *10-2 m of the inlet tube is 2.1 times the radius R2 of the outlet tube, and the fluid is water (ρ = 1000 kg/m3). Find the pressure difference P1 - P2 in units of kPa.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT